thecodingmachine / database.tdbm

src/Mouf/Database/TDBM/InnerResultIterator.php

Indentation +263 added lines, -263 removed lines

@@ -29,267 +29,267 @@
  */
 class InnerResultIterator implements \Iterator, \Countable, \ArrayAccess
 {
-    /**
-     * @var Statement
-     */
-    protected $statement;
-
-    protected $fetchStarted = false;
-    private $objectStorage;
-    private $className;
-
-    private $tdbmService;
-    private $magicSql;
-    private $parameters;
-    private $limit;
-    private $offset;
-    private $columnDescriptors;
-    private $magicQuery;
-
-    /**
-     * The key of the current retrieved object.
-     *
-     * @var int
-     */
-    protected $key = -1;
-
-    protected $current = null;
-
-    private $databasePlatform;
-
-    /**
-     * @var LoggerInterface
-     */
-    private $logger;
-
-    public function __construct($magicSql, array $parameters, $limit, $offset, array $columnDescriptors, $objectStorage, $className, TDBMService $tdbmService, MagicQuery $magicQuery, LoggerInterface $logger)
-    {
-        $this->magicSql = $magicSql;
-        $this->objectStorage = $objectStorage;
-        $this->className = $className;
-        $this->tdbmService = $tdbmService;
-        $this->parameters = $parameters;
-        $this->limit = $limit;
-        $this->offset = $offset;
-        $this->columnDescriptors = $columnDescriptors;
-        $this->magicQuery = $magicQuery;
-        $this->databasePlatform = $this->tdbmService->getConnection()->getDatabasePlatform();
-        $this->logger = $logger;
-    }
-
-    protected function executeQuery()
-    {
-        $sql = $this->magicQuery->build($this->magicSql, $this->parameters);
-        $sql = $this->tdbmService->getConnection()->getDatabasePlatform()->modifyLimitQuery($sql, $this->limit, $this->offset);
-
-        $this->logger->debug('Running SQL request: '.$sql);
-
-        $this->statement = $this->tdbmService->getConnection()->executeQuery($sql, $this->parameters);
-
-        $this->fetchStarted = true;
-    }
-
-    /**
-     * Counts found records (this is the number of records fetched, taking into account the LIMIT and OFFSET settings).
-     *
-     * @return int
-     */
-    public function count()
-    {
-        if (!$this->fetchStarted) {
-            $this->executeQuery();
-        }
-
-        return $this->statement->rowCount();
-    }
-
-    /**
-     * Fetches record at current cursor.
-     *
-     * @return AbstractTDBMObject|null
-     */
-    public function current()
-    {
-        return $this->current;
-    }
-
-    /**
-     * Returns the current result's key.
-     *
-     * @return int
-     */
-    public function key()
-    {
-        return $this->key;
-    }
-
-    /**
-     * Advances the cursor to the next result.
-     * Casts the database result into one (or several) beans.
-     */
-    public function next()
-    {
-        $row = $this->statement->fetch(\PDO::FETCH_NUM);
-        if ($row) {
-
-            // array<tablegroup, array<table, array<column, value>>>
-            $beansData = [];
-            foreach ($row as $i => $value) {
-                $columnDescriptor = $this->columnDescriptors[$i];
-
-                if ($columnDescriptor['tableGroup'] === null) {
-                    // A column can have no tableGroup (if it comes from an ORDER BY expression)
-                    continue;
-                }
-
-                // Let's cast the value according to its type
-                $value = $columnDescriptor['type']->convertToPHPValue($value, $this->databasePlatform);
-
-                $beansData[$columnDescriptor['tableGroup']][$columnDescriptor['table']][$columnDescriptor['column']] = $value;
-            }
-
-            $reflectionClassCache = [];
-            $firstBean = true;
-            foreach ($beansData as $beanData) {
-
-                // Let's find the bean class name associated to the bean.
-
-                list($actualClassName, $mainBeanTableName, $tablesUsed) = $this->tdbmService->_getClassNameFromBeanData($beanData);
-
-                if ($this->className !== null) {
-                    $actualClassName = $this->className;
-                }
-
-                // Let's filter out the beanData that is not used (because it belongs to a part of the hierarchy that is not fetched:
-                foreach ($beanData as $tableName => $descriptors) {
-                    if (!in_array($tableName, $tablesUsed)) {
-                        unset($beanData[$tableName]);
-                    }
-                }
-
-                // Must we create the bean? Let's see in the cache if we have a mapping DbRow?
-                // Let's get the first object mapping a row:
-                // We do this loop only for the first table
-
-                $primaryKeys = $this->tdbmService->_getPrimaryKeysFromObjectData($mainBeanTableName, $beanData[$mainBeanTableName]);
-                $hash = $this->tdbmService->getObjectHash($primaryKeys);
-
-                if ($this->objectStorage->has($mainBeanTableName, $hash)) {
-                    $dbRow = $this->objectStorage->get($mainBeanTableName, $hash);
-                    $bean = $dbRow->getTDBMObject();
-                } else {
-                    // Let's construct the bean
-                    if (!isset($reflectionClassCache[$actualClassName])) {
-                        $reflectionClassCache[$actualClassName] = new \ReflectionClass($actualClassName);
-                    }
-                    // Let's bypass the constructor when creating the bean!
-                    $bean = $reflectionClassCache[$actualClassName]->newInstanceWithoutConstructor();
-                    $bean->_constructFromData($beanData, $this->tdbmService);
-                }
-
-                // The first bean is the one containing the main table.
-                if ($firstBean) {
-                    $firstBean = false;
-                    $this->current = $bean;
-                }
-            }
-
-            ++$this->key;
-        } else {
-            $this->current = null;
-        }
-    }
-
-    /**
-     * Moves the cursor to the beginning of the result set.
-     */
-    public function rewind()
-    {
-        $this->executeQuery();
-        $this->key = -1;
-        $this->next();
-    }
-    /**
-     * Checks if the cursor is reading a valid result.
-     *
-     * @return bool
-     */
-    public function valid()
-    {
-        return $this->current !== null;
-    }
-
-    /**
-     * Whether a offset exists.
-     *
-     * @link http://php.net/manual/en/arrayaccess.offsetexists.php
-     *
-     * @param mixed $offset <p>
-     *                      An offset to check for.
-     *                      </p>
-     *
-     * @return bool true on success or false on failure.
-     *              </p>
-     *              <p>
-     *              The return value will be casted to boolean if non-boolean was returned
-     *
-     * @since 5.0.0
-     */
-    public function offsetExists($offset)
-    {
-        throw new TDBMInvalidOperationException('You cannot access this result set via index because it was fetched in CURSOR mode. Use ARRAY_MODE instead.');
-    }
-
-    /**
-     * Offset to retrieve.
-     *
-     * @link http://php.net/manual/en/arrayaccess.offsetget.php
-     *
-     * @param mixed $offset <p>
-     *                      The offset to retrieve.
-     *                      </p>
-     *
-     * @return mixed Can return all value types
-     *
-     * @since 5.0.0
-     */
-    public function offsetGet($offset)
-    {
-        throw new TDBMInvalidOperationException('You cannot access this result set via index because it was fetched in CURSOR mode. Use ARRAY_MODE instead.');
-    }
-
-    /**
-     * Offset to set.
-     *
-     * @link http://php.net/manual/en/arrayaccess.offsetset.php
-     *
-     * @param mixed $offset <p>
-     *                      The offset to assign the value to.
-     *                      </p>
-     * @param mixed $value  <p>
-     *                      The value to set.
-     *                      </p>
-     *
-     * @since 5.0.0
-     */
-    public function offsetSet($offset, $value)
-    {
-        throw new TDBMInvalidOperationException('You can set values in a TDBM result set.');
-    }
-
-    /**
-     * Offset to unset.
-     *
-     * @link http://php.net/manual/en/arrayaccess.offsetunset.php
-     *
-     * @param mixed $offset <p>
-     *                      The offset to unset.
-     *                      </p>
-     *
-     * @since 5.0.0
-     */
-    public function offsetUnset($offset)
-    {
-        throw new TDBMInvalidOperationException('You can unset values in a TDBM result set.');
-    }
+	/**
+	 * @var Statement
+	 */
+	protected $statement;
+
+	protected $fetchStarted = false;
+	private $objectStorage;
+	private $className;
+
+	private $tdbmService;
+	private $magicSql;
+	private $parameters;
+	private $limit;
+	private $offset;
+	private $columnDescriptors;
+	private $magicQuery;
+
+	/**
+	 * The key of the current retrieved object.
+	 *
+	 * @var int
+	 */
+	protected $key = -1;
+
+	protected $current = null;
+
+	private $databasePlatform;
+
+	/**
+	 * @var LoggerInterface
+	 */
+	private $logger;
+
+	public function __construct($magicSql, array $parameters, $limit, $offset, array $columnDescriptors, $objectStorage, $className, TDBMService $tdbmService, MagicQuery $magicQuery, LoggerInterface $logger)
+	{
+		$this->magicSql = $magicSql;
+		$this->objectStorage = $objectStorage;
+		$this->className = $className;
+		$this->tdbmService = $tdbmService;
+		$this->parameters = $parameters;
+		$this->limit = $limit;
+		$this->offset = $offset;
+		$this->columnDescriptors = $columnDescriptors;
+		$this->magicQuery = $magicQuery;
+		$this->databasePlatform = $this->tdbmService->getConnection()->getDatabasePlatform();
+		$this->logger = $logger;
+	}
+
+	protected function executeQuery()
+	{
+		$sql = $this->magicQuery->build($this->magicSql, $this->parameters);
+		$sql = $this->tdbmService->getConnection()->getDatabasePlatform()->modifyLimitQuery($sql, $this->limit, $this->offset);
+
+		$this->logger->debug('Running SQL request: '.$sql);
+
+		$this->statement = $this->tdbmService->getConnection()->executeQuery($sql, $this->parameters);
+
+		$this->fetchStarted = true;
+	}
+
+	/**
+	 * Counts found records (this is the number of records fetched, taking into account the LIMIT and OFFSET settings).
+	 *
+	 * @return int
+	 */
+	public function count()
+	{
+		if (!$this->fetchStarted) {
+			$this->executeQuery();
+		}
+
+		return $this->statement->rowCount();
+	}
+
+	/**
+	 * Fetches record at current cursor.
+	 *
+	 * @return AbstractTDBMObject|null
+	 */
+	public function current()
+	{
+		return $this->current;
+	}
+
+	/**
+	 * Returns the current result's key.
+	 *
+	 * @return int
+	 */
+	public function key()
+	{
+		return $this->key;
+	}
+
+	/**
+	 * Advances the cursor to the next result.
+	 * Casts the database result into one (or several) beans.
+	 */
+	public function next()
+	{
+		$row = $this->statement->fetch(\PDO::FETCH_NUM);
+		if ($row) {
+
+			// array<tablegroup, array<table, array<column, value>>>
+			$beansData = [];
+			foreach ($row as $i => $value) {
+				$columnDescriptor = $this->columnDescriptors[$i];
+
+				if ($columnDescriptor['tableGroup'] === null) {
+					// A column can have no tableGroup (if it comes from an ORDER BY expression)
+					continue;
+				}
+
+				// Let's cast the value according to its type
+				$value = $columnDescriptor['type']->convertToPHPValue($value, $this->databasePlatform);
+
+				$beansData[$columnDescriptor['tableGroup']][$columnDescriptor['table']][$columnDescriptor['column']] = $value;
+			}
+
+			$reflectionClassCache = [];
+			$firstBean = true;
+			foreach ($beansData as $beanData) {
+
+				// Let's find the bean class name associated to the bean.
+
+				list($actualClassName, $mainBeanTableName, $tablesUsed) = $this->tdbmService->_getClassNameFromBeanData($beanData);
+
+				if ($this->className !== null) {
+					$actualClassName = $this->className;
+				}
+
+				// Let's filter out the beanData that is not used (because it belongs to a part of the hierarchy that is not fetched:
+				foreach ($beanData as $tableName => $descriptors) {
+					if (!in_array($tableName, $tablesUsed)) {
+						unset($beanData[$tableName]);
+					}
+				}
+
+				// Must we create the bean? Let's see in the cache if we have a mapping DbRow?
+				// Let's get the first object mapping a row:
+				// We do this loop only for the first table
+
+				$primaryKeys = $this->tdbmService->_getPrimaryKeysFromObjectData($mainBeanTableName, $beanData[$mainBeanTableName]);
+				$hash = $this->tdbmService->getObjectHash($primaryKeys);
+
+				if ($this->objectStorage->has($mainBeanTableName, $hash)) {
+					$dbRow = $this->objectStorage->get($mainBeanTableName, $hash);
+					$bean = $dbRow->getTDBMObject();
+				} else {
+					// Let's construct the bean
+					if (!isset($reflectionClassCache[$actualClassName])) {
+						$reflectionClassCache[$actualClassName] = new \ReflectionClass($actualClassName);
+					}
+					// Let's bypass the constructor when creating the bean!
+					$bean = $reflectionClassCache[$actualClassName]->newInstanceWithoutConstructor();
+					$bean->_constructFromData($beanData, $this->tdbmService);
+				}
+
+				// The first bean is the one containing the main table.
+				if ($firstBean) {
+					$firstBean = false;
+					$this->current = $bean;
+				}
+			}
+
+			++$this->key;
+		} else {
+			$this->current = null;
+		}
+	}
+
+	/**
+	 * Moves the cursor to the beginning of the result set.
+	 */
+	public function rewind()
+	{
+		$this->executeQuery();
+		$this->key = -1;
+		$this->next();
+	}
+	/**
+	 * Checks if the cursor is reading a valid result.
+	 *
+	 * @return bool
+	 */
+	public function valid()
+	{
+		return $this->current !== null;
+	}
+
+	/**
+	 * Whether a offset exists.
+	 *
+	 * @link http://php.net/manual/en/arrayaccess.offsetexists.php
+	 *
+	 * @param mixed $offset <p>
+	 *                      An offset to check for.
+	 *                      </p>
+	 *
+	 * @return bool true on success or false on failure.
+	 *              </p>
+	 *              <p>
+	 *              The return value will be casted to boolean if non-boolean was returned
+	 *
+	 * @since 5.0.0
+	 */
+	public function offsetExists($offset)
+	{
+		throw new TDBMInvalidOperationException('You cannot access this result set via index because it was fetched in CURSOR mode. Use ARRAY_MODE instead.');
+	}
+
+	/**
+	 * Offset to retrieve.
+	 *
+	 * @link http://php.net/manual/en/arrayaccess.offsetget.php
+	 *
+	 * @param mixed $offset <p>
+	 *                      The offset to retrieve.
+	 *                      </p>
+	 *
+	 * @return mixed Can return all value types
+	 *
+	 * @since 5.0.0
+	 */
+	public function offsetGet($offset)
+	{
+		throw new TDBMInvalidOperationException('You cannot access this result set via index because it was fetched in CURSOR mode. Use ARRAY_MODE instead.');
+	}
+
+	/**
+	 * Offset to set.
+	 *
+	 * @link http://php.net/manual/en/arrayaccess.offsetset.php
+	 *
+	 * @param mixed $offset <p>
+	 *                      The offset to assign the value to.
+	 *                      </p>
+	 * @param mixed $value  <p>
+	 *                      The value to set.
+	 *                      </p>
+	 *
+	 * @since 5.0.0
+	 */
+	public function offsetSet($offset, $value)
+	{
+		throw new TDBMInvalidOperationException('You can set values in a TDBM result set.');
+	}
+
+	/**
+	 * Offset to unset.
+	 *
+	 * @link http://php.net/manual/en/arrayaccess.offsetunset.php
+	 *
+	 * @param mixed $offset <p>
+	 *                      The offset to unset.
+	 *                      </p>
+	 *
+	 * @since 5.0.0
+	 */
+	public function offsetUnset($offset)
+	{
+		throw new TDBMInvalidOperationException('You can unset values in a TDBM result set.');
+	}
 }

src/Mouf/Database/TDBM/AbstractTDBMObject.php

Indentation +595 added lines, -595 removed lines

@@ -31,604 +31,604 @@
  */
 abstract class AbstractTDBMObject implements JsonSerializable
 {
-    /**
-     * The service this object is bound to.
-     *
-     * @var TDBMService
-     */
-    protected $tdbmService;
-
-    /**
-     * An array of DbRow, indexed by table name.
-     *
-     * @var DbRow[]
-     */
-    protected $dbRows = array();
-
-    /**
-     * One of TDBMObjectStateEnum::STATE_NEW, TDBMObjectStateEnum::STATE_NOT_LOADED, TDBMObjectStateEnum::STATE_LOADED, TDBMObjectStateEnum::STATE_DELETED.
-     * $status = TDBMObjectStateEnum::STATE_NEW when a new object is created with DBMObject:getNewObject.
-     * $status = TDBMObjectStateEnum::STATE_NOT_LOADED when the object has been retrieved with getObject but when no data has been accessed in it yet.
-     * $status = TDBMObjectStateEnum::STATE_LOADED when the object is cached in memory.
-     *
-     * @var string
-     */
-    private $status;
-
-    /**
-     * Array storing beans related via many to many relationships (pivot tables).
-     *
-     * @var \SplObjectStorage[] Key: pivot table name, value: SplObjectStorage
-     */
-    private $relationships = [];
-
-    /**
-     * @var bool[] Key: pivot table name, value: whether a query was performed to load the data
-     */
-    private $loadedRelationships = [];
-
-    /**
-     * Array storing beans related via many to one relationships (this bean is pointed by external beans).
-     *
-     * @var AlterableResultIterator[] Key: [external_table]___[external_column], value: SplObjectStorage
-     */
-    private $manyToOneRelationships = [];
-
-    /**
-     * Used with $primaryKeys when we want to retrieve an existing object
-     * and $primaryKeys=[] if we want a new object.
-     *
-     * @param string      $tableName
-     * @param array       $primaryKeys
-     * @param TDBMService $tdbmService
-     *
-     * @throws TDBMException
-     * @throws TDBMInvalidOperationException
-     */
-    public function __construct($tableName = null, array $primaryKeys = array(), TDBMService $tdbmService = null)
-    {
-        // FIXME: lazy loading should be forbidden on tables with inheritance and dynamic type assignation...
-        if (!empty($tableName)) {
-            $this->dbRows[$tableName] = new DbRow($this, $tableName, $primaryKeys, $tdbmService);
-        }
-
-        if ($tdbmService === null) {
-            $this->_setStatus(TDBMObjectStateEnum::STATE_DETACHED);
-        } else {
-            $this->_attach($tdbmService);
-            if (!empty($primaryKeys)) {
-                $this->_setStatus(TDBMObjectStateEnum::STATE_NOT_LOADED);
-            } else {
-                $this->_setStatus(TDBMObjectStateEnum::STATE_NEW);
-            }
-        }
-    }
-
-    /**
-     * Alternative constructor called when data is fetched from database via a SELECT.
-     *
-     * @param array       $beanData    array<table, array<column, value>>
-     * @param TDBMService $tdbmService
-     */
-    public function _constructFromData(array $beanData, TDBMService $tdbmService)
-    {
-        $this->tdbmService = $tdbmService;
-
-        foreach ($beanData as $table => $columns) {
-            $this->dbRows[$table] = new DbRow($this, $table, $tdbmService->_getPrimaryKeysFromObjectData($table, $columns), $tdbmService, $columns);
-        }
-
-        $this->status = TDBMObjectStateEnum::STATE_LOADED;
-    }
-
-    /**
-     * Alternative constructor called when bean is lazily loaded.
-     *
-     * @param string      $tableName
-     * @param array       $primaryKeys
-     * @param TDBMService $tdbmService
-     */
-    public function _constructLazy($tableName, array $primaryKeys, TDBMService $tdbmService)
-    {
-        $this->tdbmService = $tdbmService;
-
-        $this->dbRows[$tableName] = new DbRow($this, $tableName, $primaryKeys, $tdbmService);
-
-        $this->status = TDBMObjectStateEnum::STATE_NOT_LOADED;
-    }
-
-    public function _attach(TDBMService $tdbmService)
-    {
-        if ($this->status !== TDBMObjectStateEnum::STATE_DETACHED) {
-            throw new TDBMInvalidOperationException('Cannot attach an object that is already attached to TDBM.');
-        }
-        $this->tdbmService = $tdbmService;
-
-        // If we attach this object, we must work to make sure the tables are in ascending order (from low level to top level)
-        $tableNames = $this->getUsedTables();
-
-        $newDbRows = [];
-
-        foreach ($tableNames as $table) {
-            if (!isset($this->dbRows[$table])) {
-                $this->registerTable($table);
-            }
-            $newDbRows[$table] = $this->dbRows[$table];
-        }
-        $this->dbRows = $newDbRows;
-
-        $this->status = TDBMObjectStateEnum::STATE_NEW;
-        foreach ($this->dbRows as $dbRow) {
-            $dbRow->_attach($tdbmService);
-        }
-    }
-
-    /**
-     * Sets the state of the TDBM Object
-     * One of TDBMObjectStateEnum::STATE_NEW, TDBMObjectStateEnum::STATE_NOT_LOADED, TDBMObjectStateEnum::STATE_LOADED, TDBMObjectStateEnum::STATE_DELETED.
-     * $status = TDBMObjectStateEnum::STATE_NEW when a new object is created with DBMObject:getNewObject.
-     * $status = TDBMObjectStateEnum::STATE_NOT_LOADED when the object has been retrieved with getObject but when no data has been accessed in it yet.
-     * $status = TDBMObjectStateEnum::STATE_LOADED when the object is cached in memory.
-     *
-     * @param string $state
-     */
-    public function _setStatus($state)
-    {
-        $this->status = $state;
-
-        // TODO: we might ignore the loaded => dirty state here! dirty status comes from the db_row itself.
-        foreach ($this->dbRows as $dbRow) {
-            $dbRow->_setStatus($state);
-        }
-    }
-
-    /**
-     * Checks that $tableName is ok, or returns the only possible table name if "$tableName = null"
-     * or throws an error.
-     *
-     * @param string $tableName
-     *
-     * @return string
-     */
-    private function checkTableName($tableName = null)
-    {
-        if ($tableName === null) {
-            if (count($this->dbRows) > 1) {
-                throw new TDBMException('This object is based on several tables. You must specify which table you are retrieving data from.');
-            } elseif (count($this->dbRows) === 1) {
-                $tableName = array_keys($this->dbRows)[0];
-            }
-        }
-
-        if (!isset($this->dbRows[$tableName])) {
-            if (count($this->dbRows === 0)) {
-                throw new TDBMException('Object is not yet bound to any table.');
-            } else {
-                throw new TDBMException('Unknown table "'.$tableName.'"" in object.');
-            }
-        }
-
-        return $tableName;
-    }
-
-    protected function get($var, $tableName = null)
-    {
-        $tableName = $this->checkTableName($tableName);
-
-        return $this->dbRows[$tableName]->get($var);
-    }
-
-    protected function set($var, $value, $tableName = null)
-    {
-        if ($tableName === null) {
-            if (count($this->dbRows) > 1) {
-                throw new TDBMException('This object is based on several tables. You must specify which table you are retrieving data from.');
-            } elseif (count($this->dbRows) === 1) {
-                $tableName = array_keys($this->dbRows)[0];
-            } else {
-                throw new TDBMException('Please specify a table for this object.');
-            }
-        }
-
-        if (!isset($this->dbRows[$tableName])) {
-            $this->registerTable($tableName);
-        }
-
-        $this->dbRows[$tableName]->set($var, $value);
-        if ($this->dbRows[$tableName]->_getStatus() === TDBMObjectStateEnum::STATE_DIRTY) {
-            $this->status = TDBMObjectStateEnum::STATE_DIRTY;
-        }
-    }
-
-    /**
-     * @param string             $foreignKeyName
-     * @param AbstractTDBMObject $bean
-     */
-    protected function setRef($foreignKeyName, AbstractTDBMObject $bean = null, $tableName = null)
-    {
-        if ($tableName === null) {
-            if (count($this->dbRows) > 1) {
-                throw new TDBMException('This object is based on several tables. You must specify which table you are retrieving data from.');
-            } elseif (count($this->dbRows) === 1) {
-                $tableName = array_keys($this->dbRows)[0];
-            } else {
-                throw new TDBMException('Please specify a table for this object.');
-            }
-        }
-
-        if (!isset($this->dbRows[$tableName])) {
-            $this->registerTable($tableName);
-        }
-
-        $oldLinkedBean = $this->dbRows[$tableName]->getRef($foreignKeyName);
-        if ($oldLinkedBean !== null) {
-            $oldLinkedBean->removeManyToOneRelationship($tableName, $foreignKeyName, $this);
-        }
-
-        $this->dbRows[$tableName]->setRef($foreignKeyName, $bean);
-        if ($this->dbRows[$tableName]->_getStatus() === TDBMObjectStateEnum::STATE_DIRTY) {
-            $this->status = TDBMObjectStateEnum::STATE_DIRTY;
-        }
-
-        if ($bean !== null) {
-            $bean->setManyToOneRelationship($tableName, $foreignKeyName, $this);
-        }
-    }
-
-    /**
-     * @param string $foreignKeyName A unique name for this reference
-     *
-     * @return AbstractTDBMObject|null
-     */
-    protected function getRef($foreignKeyName, $tableName = null)
-    {
-        $tableName = $this->checkTableName($tableName);
-
-        return $this->dbRows[$tableName]->getRef($foreignKeyName);
-    }
-
-    /**
-     * Adds a many to many relationship to this bean.
-     *
-     * @param string             $pivotTableName
-     * @param AbstractTDBMObject $remoteBean
-     */
-    protected function addRelationship($pivotTableName, AbstractTDBMObject $remoteBean)
-    {
-        $this->setRelationship($pivotTableName, $remoteBean, 'new');
-    }
-
-    /**
-     * Returns true if there is a relationship to this bean.
-     *
-     * @param string             $pivotTableName
-     * @param AbstractTDBMObject $remoteBean
-     *
-     * @return bool
-     */
-    protected function hasRelationship($pivotTableName, AbstractTDBMObject $remoteBean)
-    {
-        $storage = $this->retrieveRelationshipsStorage($pivotTableName);
-
-        if ($storage->contains($remoteBean)) {
-            if ($storage[$remoteBean]['status'] !== 'delete') {
-                return true;
-            }
-        }
-
-        return false;
-    }
-
-    /**
-     * Internal TDBM method. Removes a many to many relationship from this bean.
-     *
-     * @param string             $pivotTableName
-     * @param AbstractTDBMObject $remoteBean
-     */
-    public function _removeRelationship($pivotTableName, AbstractTDBMObject $remoteBean)
-    {
-        if (isset($this->relationships[$pivotTableName][$remoteBean]) && $this->relationships[$pivotTableName][$remoteBean]['status'] === 'new') {
-            unset($this->relationships[$pivotTableName][$remoteBean]);
-            unset($remoteBean->relationships[$pivotTableName][$this]);
-        } else {
-            $this->setRelationship($pivotTableName, $remoteBean, 'delete');
-        }
-    }
-
-    /**
-     * Sets many to many relationships for this bean.
-     * Adds new relationships and removes unused ones.
-     *
-     * @param $pivotTableName
-     * @param array $remoteBeans
-     */
-    protected function setRelationships($pivotTableName, array $remoteBeans)
-    {
-        $storage = $this->retrieveRelationshipsStorage($pivotTableName);
-
-        foreach ($storage as $oldRemoteBean) {
-            if (!in_array($oldRemoteBean, $remoteBeans, true)) {
-                // $oldRemoteBean must be removed
-                $this->_removeRelationship($pivotTableName, $oldRemoteBean);
-            }
-        }
-
-        foreach ($remoteBeans as $remoteBean) {
-            if (!$storage->contains($remoteBean) || $storage[$remoteBean]['status'] === 'delete') {
-                // $remoteBean must be added
-                $this->addRelationship($pivotTableName, $remoteBean);
-            }
-        }
-    }
-
-    /**
-     * Returns the list of objects linked to this bean via $pivotTableName.
-     *
-     * @param $pivotTableName
-     *
-     * @return \SplObjectStorage
-     */
-    private function retrieveRelationshipsStorage($pivotTableName)
-    {
-        $storage = $this->getRelationshipStorage($pivotTableName);
-        if ($this->status === TDBMObjectStateEnum::STATE_DETACHED || $this->status === TDBMObjectStateEnum::STATE_NEW || (isset($this->loadedRelationships[$pivotTableName]) && $this->loadedRelationships[$pivotTableName])) {
-            return $storage;
-        }
-
-        $beans = $this->tdbmService->_getRelatedBeans($pivotTableName, $this);
-        $this->loadedRelationships[$pivotTableName] = true;
-
-        foreach ($beans as $bean) {
-            if (isset($storage[$bean])) {
-                $oldStatus = $storage[$bean]['status'];
-                if ($oldStatus === 'delete') {
-                    // Keep deleted things deleted
-                    continue;
-                }
-            }
-            $this->setRelationship($pivotTableName, $bean, 'loaded');
-        }
-
-        return $storage;
-    }
-
-    /**
-     * Internal TDBM method. Returns the list of objects linked to this bean via $pivotTableName.
-     *
-     * @param $pivotTableName
-     *
-     * @return AbstractTDBMObject[]
-     */
-    public function _getRelationships($pivotTableName)
-    {
-        return $this->relationshipStorageToArray($this->retrieveRelationshipsStorage($pivotTableName));
-    }
-
-    private function relationshipStorageToArray(\SplObjectStorage $storage)
-    {
-        $beans = [];
-        foreach ($storage as $bean) {
-            $statusArr = $storage[$bean];
-            if ($statusArr['status'] !== 'delete') {
-                $beans[] = $bean;
-            }
-        }
-
-        return $beans;
-    }
-
-    /**
-     * Declares a relationship between.
-     *
-     * @param string             $pivotTableName
-     * @param AbstractTDBMObject $remoteBean
-     * @param string             $status
-     */
-    private function setRelationship($pivotTableName, AbstractTDBMObject $remoteBean, $status)
-    {
-        $storage = $this->getRelationshipStorage($pivotTableName);
-        $storage->attach($remoteBean, ['status' => $status, 'reverse' => false]);
-        if ($this->status === TDBMObjectStateEnum::STATE_LOADED) {
-            $this->_setStatus(TDBMObjectStateEnum::STATE_DIRTY);
-        }
-
-        $remoteStorage = $remoteBean->getRelationshipStorage($pivotTableName);
-        $remoteStorage->attach($this, ['status' => $status, 'reverse' => true]);
-    }
-
-    /**
-     * Returns the SplObjectStorage associated to this relationship (creates it if it does not exists).
-     *
-     * @param string $pivotTableName
-     *
-     * @return \SplObjectStorage
-     */
-    private function getRelationshipStorage(string $pivotTableName) : \SplObjectStorage
-    {
-        return $this->relationships[$pivotTableName] ?? $this->relationships[$pivotTableName] = new \SplObjectStorage();
-    }
-
-    /**
-     * Returns the SplObjectStorage associated to this relationship (creates it if it does not exists).
-     *
-     * @param string $tableName
-     * @param string $foreignKeyName
-     *
-     * @return AlterableResultIterator
-     */
-    private function getManyToOneAlterableResultIterator(string $tableName, string $foreignKeyName) : AlterableResultIterator
-    {
-        $key = $tableName.'___'.$foreignKeyName;
-
-        return $this->manyToOneRelationships[$key] ?? $this->manyToOneRelationships[$key] = new AlterableResultIterator();
-    }
-
-    /**
-     * Declares a relationship between this bean and the bean pointing to it.
-     *
-     * @param string             $tableName
-     * @param string             $foreignKeyName
-     * @param AbstractTDBMObject $remoteBean
-     */
-    private function setManyToOneRelationship(string $tableName, string $foreignKeyName, AbstractTDBMObject $remoteBean)
-    {
-        $alterableResultIterator = $this->getManyToOneAlterableResultIterator($tableName, $foreignKeyName);
-        $alterableResultIterator->add($remoteBean);
-    }
-
-    /**
-     * Declares a relationship between this bean and the bean pointing to it.
-     *
-     * @param string             $tableName
-     * @param string             $foreignKeyName
-     * @param AbstractTDBMObject $remoteBean
-     */
-    private function removeManyToOneRelationship(string $tableName, string $foreignKeyName, AbstractTDBMObject $remoteBean)
-    {
-        $alterableResultIterator = $this->getManyToOneAlterableResultIterator($tableName, $foreignKeyName);
-        $alterableResultIterator->remove($remoteBean);
-    }
-
-    /**
-     * Returns the list of objects linked to this bean via a given foreign key.
-     *
-     * @param string $tableName
-     * @param string $foreignKeyName
-     * @param string $searchTableName
-     * @param array  $searchFilter
-     * @param string $orderString     The ORDER BY part of the query. All columns must be prefixed by the table name (in the form: table.column). WARNING : This parameter is not kept when there is an additionnal or removal object !
-     *
-     * @return AlterableResultIterator
-     */
-    protected function retrieveManyToOneRelationshipsStorage(string $tableName, string $foreignKeyName, string $searchTableName, array $searchFilter, $orderString = null) : AlterableResultIterator
-    {
-        $key = $tableName.'___'.$foreignKeyName;
-        $alterableResultIterator = $this->getManyToOneAlterableResultIterator($tableName, $foreignKeyName);
-        if ($this->status === TDBMObjectStateEnum::STATE_DETACHED || $this->status === TDBMObjectStateEnum::STATE_NEW || (isset($this->manyToOneRelationships[$key]) && $this->manyToOneRelationships[$key]->getUnderlyingResultIterator() !== null)) {
-            return $alterableResultIterator;
-        }
-
-        $unalteredResultIterator = $this->tdbmService->findObjects($searchTableName, $searchFilter, [], $orderString);
-
-        $alterableResultIterator->setResultIterator($unalteredResultIterator->getIterator());
-
-        return $alterableResultIterator;
-    }
-
-    /**
-     * Reverts any changes made to the object and resumes it to its DB state.
-     * This can only be called on objects that come from database and that have not been deleted.
-     * Otherwise, this will throw an exception.
-     *
-     * @throws TDBMException
-     */
-    public function discardChanges()
-    {
-        if ($this->status === TDBMObjectStateEnum::STATE_NEW || $this->status === TDBMObjectStateEnum::STATE_DETACHED) {
-            throw new TDBMException("You cannot call discardChanges() on an object that has been created with the 'new' keyword and that has not yet been saved.");
-        }
-
-        if ($this->status === TDBMObjectStateEnum::STATE_DELETED) {
-            throw new TDBMException('You cannot call discardChanges() on an object that has been deleted.');
-        }
-
-        $this->_setStatus(TDBMObjectStateEnum::STATE_NOT_LOADED);
-    }
-
-    /**
-     * Method used internally by TDBM. You should not use it directly.
-     * This method returns the status of the TDBMObject.
-     * This is one of TDBMObjectStateEnum::STATE_NEW, TDBMObjectStateEnum::STATE_NOT_LOADED, TDBMObjectStateEnum::STATE_LOADED, TDBMObjectStateEnum::STATE_DELETED.
-     * $status = TDBMObjectStateEnum::STATE_NEW when a new object is created with DBMObject:getNewObject.
-     * $status = TDBMObjectStateEnum::STATE_NOT_LOADED when the object has been retrieved with getObject but when no data has been accessed in it yet.
-     * $status = TDBMObjectStateEnum::STATE_LOADED when the object is cached in memory.
-     *
-     * @return string
-     */
-    public function _getStatus()
-    {
-        return $this->status;
-    }
-
-    /**
-     * Override the native php clone function for TDBMObjects.
-     */
-    public function __clone()
-    {
-        // Let's clone the many to many relationships
-        if ($this->status === TDBMObjectStateEnum::STATE_DETACHED) {
-            $pivotTableList = array_keys($this->relationships);
-        } else {
-            $pivotTableList = $this->tdbmService->_getPivotTablesLinkedToBean($this);
-        }
-
-        foreach ($pivotTableList as $pivotTable) {
-            $storage = $this->retrieveRelationshipsStorage($pivotTable);
-
-            // Let's duplicate the reverse side of the relationship // This is useless: already done by "retrieveRelationshipsStorage"!!!
-            /*foreach ($storage as $remoteBean) {
+	/**
+	 * The service this object is bound to.
+	 *
+	 * @var TDBMService
+	 */
+	protected $tdbmService;
+
+	/**
+	 * An array of DbRow, indexed by table name.
+	 *
+	 * @var DbRow[]
+	 */
+	protected $dbRows = array();
+
+	/**
+	 * One of TDBMObjectStateEnum::STATE_NEW, TDBMObjectStateEnum::STATE_NOT_LOADED, TDBMObjectStateEnum::STATE_LOADED, TDBMObjectStateEnum::STATE_DELETED.
+	 * $status = TDBMObjectStateEnum::STATE_NEW when a new object is created with DBMObject:getNewObject.
+	 * $status = TDBMObjectStateEnum::STATE_NOT_LOADED when the object has been retrieved with getObject but when no data has been accessed in it yet.
+	 * $status = TDBMObjectStateEnum::STATE_LOADED when the object is cached in memory.
+	 *
+	 * @var string
+	 */
+	private $status;
+
+	/**
+	 * Array storing beans related via many to many relationships (pivot tables).
+	 *
+	 * @var \SplObjectStorage[] Key: pivot table name, value: SplObjectStorage
+	 */
+	private $relationships = [];
+
+	/**
+	 * @var bool[] Key: pivot table name, value: whether a query was performed to load the data
+	 */
+	private $loadedRelationships = [];
+
+	/**
+	 * Array storing beans related via many to one relationships (this bean is pointed by external beans).
+	 *
+	 * @var AlterableResultIterator[] Key: [external_table]___[external_column], value: SplObjectStorage
+	 */
+	private $manyToOneRelationships = [];
+
+	/**
+	 * Used with $primaryKeys when we want to retrieve an existing object
+	 * and $primaryKeys=[] if we want a new object.
+	 *
+	 * @param string      $tableName
+	 * @param array       $primaryKeys
+	 * @param TDBMService $tdbmService
+	 *
+	 * @throws TDBMException
+	 * @throws TDBMInvalidOperationException
+	 */
+	public function __construct($tableName = null, array $primaryKeys = array(), TDBMService $tdbmService = null)
+	{
+		// FIXME: lazy loading should be forbidden on tables with inheritance and dynamic type assignation...
+		if (!empty($tableName)) {
+			$this->dbRows[$tableName] = new DbRow($this, $tableName, $primaryKeys, $tdbmService);
+		}
+
+		if ($tdbmService === null) {
+			$this->_setStatus(TDBMObjectStateEnum::STATE_DETACHED);
+		} else {
+			$this->_attach($tdbmService);
+			if (!empty($primaryKeys)) {
+				$this->_setStatus(TDBMObjectStateEnum::STATE_NOT_LOADED);
+			} else {
+				$this->_setStatus(TDBMObjectStateEnum::STATE_NEW);
+			}
+		}
+	}
+
+	/**
+	 * Alternative constructor called when data is fetched from database via a SELECT.
+	 *
+	 * @param array       $beanData    array<table, array<column, value>>
+	 * @param TDBMService $tdbmService
+	 */
+	public function _constructFromData(array $beanData, TDBMService $tdbmService)
+	{
+		$this->tdbmService = $tdbmService;
+
+		foreach ($beanData as $table => $columns) {
+			$this->dbRows[$table] = new DbRow($this, $table, $tdbmService->_getPrimaryKeysFromObjectData($table, $columns), $tdbmService, $columns);
+		}
+
+		$this->status = TDBMObjectStateEnum::STATE_LOADED;
+	}
+
+	/**
+	 * Alternative constructor called when bean is lazily loaded.
+	 *
+	 * @param string      $tableName
+	 * @param array       $primaryKeys
+	 * @param TDBMService $tdbmService
+	 */
+	public function _constructLazy($tableName, array $primaryKeys, TDBMService $tdbmService)
+	{
+		$this->tdbmService = $tdbmService;
+
+		$this->dbRows[$tableName] = new DbRow($this, $tableName, $primaryKeys, $tdbmService);
+
+		$this->status = TDBMObjectStateEnum::STATE_NOT_LOADED;
+	}
+
+	public function _attach(TDBMService $tdbmService)
+	{
+		if ($this->status !== TDBMObjectStateEnum::STATE_DETACHED) {
+			throw new TDBMInvalidOperationException('Cannot attach an object that is already attached to TDBM.');
+		}
+		$this->tdbmService = $tdbmService;
+
+		// If we attach this object, we must work to make sure the tables are in ascending order (from low level to top level)
+		$tableNames = $this->getUsedTables();
+
+		$newDbRows = [];
+
+		foreach ($tableNames as $table) {
+			if (!isset($this->dbRows[$table])) {
+				$this->registerTable($table);
+			}
+			$newDbRows[$table] = $this->dbRows[$table];
+		}
+		$this->dbRows = $newDbRows;
+
+		$this->status = TDBMObjectStateEnum::STATE_NEW;
+		foreach ($this->dbRows as $dbRow) {
+			$dbRow->_attach($tdbmService);
+		}
+	}
+
+	/**
+	 * Sets the state of the TDBM Object
+	 * One of TDBMObjectStateEnum::STATE_NEW, TDBMObjectStateEnum::STATE_NOT_LOADED, TDBMObjectStateEnum::STATE_LOADED, TDBMObjectStateEnum::STATE_DELETED.
+	 * $status = TDBMObjectStateEnum::STATE_NEW when a new object is created with DBMObject:getNewObject.
+	 * $status = TDBMObjectStateEnum::STATE_NOT_LOADED when the object has been retrieved with getObject but when no data has been accessed in it yet.
+	 * $status = TDBMObjectStateEnum::STATE_LOADED when the object is cached in memory.
+	 *
+	 * @param string $state
+	 */
+	public function _setStatus($state)
+	{
+		$this->status = $state;
+
+		// TODO: we might ignore the loaded => dirty state here! dirty status comes from the db_row itself.
+		foreach ($this->dbRows as $dbRow) {
+			$dbRow->_setStatus($state);
+		}
+	}
+
+	/**
+	 * Checks that $tableName is ok, or returns the only possible table name if "$tableName = null"
+	 * or throws an error.
+	 *
+	 * @param string $tableName
+	 *
+	 * @return string
+	 */
+	private function checkTableName($tableName = null)
+	{
+		if ($tableName === null) {
+			if (count($this->dbRows) > 1) {
+				throw new TDBMException('This object is based on several tables. You must specify which table you are retrieving data from.');
+			} elseif (count($this->dbRows) === 1) {
+				$tableName = array_keys($this->dbRows)[0];
+			}
+		}
+
+		if (!isset($this->dbRows[$tableName])) {
+			if (count($this->dbRows === 0)) {
+				throw new TDBMException('Object is not yet bound to any table.');
+			} else {
+				throw new TDBMException('Unknown table "'.$tableName.'"" in object.');
+			}
+		}
+
+		return $tableName;
+	}
+
+	protected function get($var, $tableName = null)
+	{
+		$tableName = $this->checkTableName($tableName);
+
+		return $this->dbRows[$tableName]->get($var);
+	}
+
+	protected function set($var, $value, $tableName = null)
+	{
+		if ($tableName === null) {
+			if (count($this->dbRows) > 1) {
+				throw new TDBMException('This object is based on several tables. You must specify which table you are retrieving data from.');
+			} elseif (count($this->dbRows) === 1) {
+				$tableName = array_keys($this->dbRows)[0];
+			} else {
+				throw new TDBMException('Please specify a table for this object.');
+			}
+		}
+
+		if (!isset($this->dbRows[$tableName])) {
+			$this->registerTable($tableName);
+		}
+
+		$this->dbRows[$tableName]->set($var, $value);
+		if ($this->dbRows[$tableName]->_getStatus() === TDBMObjectStateEnum::STATE_DIRTY) {
+			$this->status = TDBMObjectStateEnum::STATE_DIRTY;
+		}
+	}
+
+	/**
+	 * @param string             $foreignKeyName
+	 * @param AbstractTDBMObject $bean
+	 */
+	protected function setRef($foreignKeyName, AbstractTDBMObject $bean = null, $tableName = null)
+	{
+		if ($tableName === null) {
+			if (count($this->dbRows) > 1) {
+				throw new TDBMException('This object is based on several tables. You must specify which table you are retrieving data from.');
+			} elseif (count($this->dbRows) === 1) {
+				$tableName = array_keys($this->dbRows)[0];
+			} else {
+				throw new TDBMException('Please specify a table for this object.');
+			}
+		}
+
+		if (!isset($this->dbRows[$tableName])) {
+			$this->registerTable($tableName);
+		}
+
+		$oldLinkedBean = $this->dbRows[$tableName]->getRef($foreignKeyName);
+		if ($oldLinkedBean !== null) {
+			$oldLinkedBean->removeManyToOneRelationship($tableName, $foreignKeyName, $this);
+		}
+
+		$this->dbRows[$tableName]->setRef($foreignKeyName, $bean);
+		if ($this->dbRows[$tableName]->_getStatus() === TDBMObjectStateEnum::STATE_DIRTY) {
+			$this->status = TDBMObjectStateEnum::STATE_DIRTY;
+		}
+
+		if ($bean !== null) {
+			$bean->setManyToOneRelationship($tableName, $foreignKeyName, $this);
+		}
+	}
+
+	/**
+	 * @param string $foreignKeyName A unique name for this reference
+	 *
+	 * @return AbstractTDBMObject|null
+	 */
+	protected function getRef($foreignKeyName, $tableName = null)
+	{
+		$tableName = $this->checkTableName($tableName);
+
+		return $this->dbRows[$tableName]->getRef($foreignKeyName);
+	}
+
+	/**
+	 * Adds a many to many relationship to this bean.
+	 *
+	 * @param string             $pivotTableName
+	 * @param AbstractTDBMObject $remoteBean
+	 */
+	protected function addRelationship($pivotTableName, AbstractTDBMObject $remoteBean)
+	{
+		$this->setRelationship($pivotTableName, $remoteBean, 'new');
+	}
+
+	/**
+	 * Returns true if there is a relationship to this bean.
+	 *
+	 * @param string             $pivotTableName
+	 * @param AbstractTDBMObject $remoteBean
+	 *
+	 * @return bool
+	 */
+	protected function hasRelationship($pivotTableName, AbstractTDBMObject $remoteBean)
+	{
+		$storage = $this->retrieveRelationshipsStorage($pivotTableName);
+
+		if ($storage->contains($remoteBean)) {
+			if ($storage[$remoteBean]['status'] !== 'delete') {
+				return true;
+			}
+		}
+
+		return false;
+	}
+
+	/**
+	 * Internal TDBM method. Removes a many to many relationship from this bean.
+	 *
+	 * @param string             $pivotTableName
+	 * @param AbstractTDBMObject $remoteBean
+	 */
+	public function _removeRelationship($pivotTableName, AbstractTDBMObject $remoteBean)
+	{
+		if (isset($this->relationships[$pivotTableName][$remoteBean]) && $this->relationships[$pivotTableName][$remoteBean]['status'] === 'new') {
+			unset($this->relationships[$pivotTableName][$remoteBean]);
+			unset($remoteBean->relationships[$pivotTableName][$this]);
+		} else {
+			$this->setRelationship($pivotTableName, $remoteBean, 'delete');
+		}
+	}
+
+	/**
+	 * Sets many to many relationships for this bean.
+	 * Adds new relationships and removes unused ones.
+	 *
+	 * @param $pivotTableName
+	 * @param array $remoteBeans
+	 */
+	protected function setRelationships($pivotTableName, array $remoteBeans)
+	{
+		$storage = $this->retrieveRelationshipsStorage($pivotTableName);
+
+		foreach ($storage as $oldRemoteBean) {
+			if (!in_array($oldRemoteBean, $remoteBeans, true)) {
+				// $oldRemoteBean must be removed
+				$this->_removeRelationship($pivotTableName, $oldRemoteBean);
+			}
+		}
+
+		foreach ($remoteBeans as $remoteBean) {
+			if (!$storage->contains($remoteBean) || $storage[$remoteBean]['status'] === 'delete') {
+				// $remoteBean must be added
+				$this->addRelationship($pivotTableName, $remoteBean);
+			}
+		}
+	}
+
+	/**
+	 * Returns the list of objects linked to this bean via $pivotTableName.
+	 *
+	 * @param $pivotTableName
+	 *
+	 * @return \SplObjectStorage
+	 */
+	private function retrieveRelationshipsStorage($pivotTableName)
+	{
+		$storage = $this->getRelationshipStorage($pivotTableName);
+		if ($this->status === TDBMObjectStateEnum::STATE_DETACHED || $this->status === TDBMObjectStateEnum::STATE_NEW || (isset($this->loadedRelationships[$pivotTableName]) && $this->loadedRelationships[$pivotTableName])) {
+			return $storage;
+		}
+
+		$beans = $this->tdbmService->_getRelatedBeans($pivotTableName, $this);
+		$this->loadedRelationships[$pivotTableName] = true;
+
+		foreach ($beans as $bean) {
+			if (isset($storage[$bean])) {
+				$oldStatus = $storage[$bean]['status'];
+				if ($oldStatus === 'delete') {
+					// Keep deleted things deleted
+					continue;
+				}
+			}
+			$this->setRelationship($pivotTableName, $bean, 'loaded');
+		}
+
+		return $storage;
+	}
+
+	/**
+	 * Internal TDBM method. Returns the list of objects linked to this bean via $pivotTableName.
+	 *
+	 * @param $pivotTableName
+	 *
+	 * @return AbstractTDBMObject[]
+	 */
+	public function _getRelationships($pivotTableName)
+	{
+		return $this->relationshipStorageToArray($this->retrieveRelationshipsStorage($pivotTableName));
+	}
+
+	private function relationshipStorageToArray(\SplObjectStorage $storage)
+	{
+		$beans = [];
+		foreach ($storage as $bean) {
+			$statusArr = $storage[$bean];
+			if ($statusArr['status'] !== 'delete') {
+				$beans[] = $bean;
+			}
+		}
+
+		return $beans;
+	}
+
+	/**
+	 * Declares a relationship between.
+	 *
+	 * @param string             $pivotTableName
+	 * @param AbstractTDBMObject $remoteBean
+	 * @param string             $status
+	 */
+	private function setRelationship($pivotTableName, AbstractTDBMObject $remoteBean, $status)
+	{
+		$storage = $this->getRelationshipStorage($pivotTableName);
+		$storage->attach($remoteBean, ['status' => $status, 'reverse' => false]);
+		if ($this->status === TDBMObjectStateEnum::STATE_LOADED) {
+			$this->_setStatus(TDBMObjectStateEnum::STATE_DIRTY);
+		}
+
+		$remoteStorage = $remoteBean->getRelationshipStorage($pivotTableName);
+		$remoteStorage->attach($this, ['status' => $status, 'reverse' => true]);
+	}
+
+	/**
+	 * Returns the SplObjectStorage associated to this relationship (creates it if it does not exists).
+	 *
+	 * @param string $pivotTableName
+	 *
+	 * @return \SplObjectStorage
+	 */
+	private function getRelationshipStorage(string $pivotTableName) : \SplObjectStorage
+	{
+		return $this->relationships[$pivotTableName] ?? $this->relationships[$pivotTableName] = new \SplObjectStorage();
+	}
+
+	/**
+	 * Returns the SplObjectStorage associated to this relationship (creates it if it does not exists).
+	 *
+	 * @param string $tableName
+	 * @param string $foreignKeyName
+	 *
+	 * @return AlterableResultIterator
+	 */
+	private function getManyToOneAlterableResultIterator(string $tableName, string $foreignKeyName) : AlterableResultIterator
+	{
+		$key = $tableName.'___'.$foreignKeyName;
+
+		return $this->manyToOneRelationships[$key] ?? $this->manyToOneRelationships[$key] = new AlterableResultIterator();
+	}
+
+	/**
+	 * Declares a relationship between this bean and the bean pointing to it.
+	 *
+	 * @param string             $tableName
+	 * @param string             $foreignKeyName
+	 * @param AbstractTDBMObject $remoteBean
+	 */
+	private function setManyToOneRelationship(string $tableName, string $foreignKeyName, AbstractTDBMObject $remoteBean)
+	{
+		$alterableResultIterator = $this->getManyToOneAlterableResultIterator($tableName, $foreignKeyName);
+		$alterableResultIterator->add($remoteBean);
+	}
+
+	/**
+	 * Declares a relationship between this bean and the bean pointing to it.
+	 *
+	 * @param string             $tableName
+	 * @param string             $foreignKeyName
+	 * @param AbstractTDBMObject $remoteBean
+	 */
+	private function removeManyToOneRelationship(string $tableName, string $foreignKeyName, AbstractTDBMObject $remoteBean)
+	{
+		$alterableResultIterator = $this->getManyToOneAlterableResultIterator($tableName, $foreignKeyName);
+		$alterableResultIterator->remove($remoteBean);
+	}
+
+	/**
+	 * Returns the list of objects linked to this bean via a given foreign key.
+	 *
+	 * @param string $tableName
+	 * @param string $foreignKeyName
+	 * @param string $searchTableName
+	 * @param array  $searchFilter
+	 * @param string $orderString     The ORDER BY part of the query. All columns must be prefixed by the table name (in the form: table.column). WARNING : This parameter is not kept when there is an additionnal or removal object !
+	 *
+	 * @return AlterableResultIterator
+	 */
+	protected function retrieveManyToOneRelationshipsStorage(string $tableName, string $foreignKeyName, string $searchTableName, array $searchFilter, $orderString = null) : AlterableResultIterator
+	{
+		$key = $tableName.'___'.$foreignKeyName;
+		$alterableResultIterator = $this->getManyToOneAlterableResultIterator($tableName, $foreignKeyName);
+		if ($this->status === TDBMObjectStateEnum::STATE_DETACHED || $this->status === TDBMObjectStateEnum::STATE_NEW || (isset($this->manyToOneRelationships[$key]) && $this->manyToOneRelationships[$key]->getUnderlyingResultIterator() !== null)) {
+			return $alterableResultIterator;
+		}
+
+		$unalteredResultIterator = $this->tdbmService->findObjects($searchTableName, $searchFilter, [], $orderString);
+
+		$alterableResultIterator->setResultIterator($unalteredResultIterator->getIterator());
+
+		return $alterableResultIterator;
+	}
+
+	/**
+	 * Reverts any changes made to the object and resumes it to its DB state.
+	 * This can only be called on objects that come from database and that have not been deleted.
+	 * Otherwise, this will throw an exception.
+	 *
+	 * @throws TDBMException
+	 */
+	public function discardChanges()
+	{
+		if ($this->status === TDBMObjectStateEnum::STATE_NEW || $this->status === TDBMObjectStateEnum::STATE_DETACHED) {
+			throw new TDBMException("You cannot call discardChanges() on an object that has been created with the 'new' keyword and that has not yet been saved.");
+		}
+
+		if ($this->status === TDBMObjectStateEnum::STATE_DELETED) {
+			throw new TDBMException('You cannot call discardChanges() on an object that has been deleted.');
+		}
+
+		$this->_setStatus(TDBMObjectStateEnum::STATE_NOT_LOADED);
+	}
+
+	/**
+	 * Method used internally by TDBM. You should not use it directly.
+	 * This method returns the status of the TDBMObject.
+	 * This is one of TDBMObjectStateEnum::STATE_NEW, TDBMObjectStateEnum::STATE_NOT_LOADED, TDBMObjectStateEnum::STATE_LOADED, TDBMObjectStateEnum::STATE_DELETED.
+	 * $status = TDBMObjectStateEnum::STATE_NEW when a new object is created with DBMObject:getNewObject.
+	 * $status = TDBMObjectStateEnum::STATE_NOT_LOADED when the object has been retrieved with getObject but when no data has been accessed in it yet.
+	 * $status = TDBMObjectStateEnum::STATE_LOADED when the object is cached in memory.
+	 *
+	 * @return string
+	 */
+	public function _getStatus()
+	{
+		return $this->status;
+	}
+
+	/**
+	 * Override the native php clone function for TDBMObjects.
+	 */
+	public function __clone()
+	{
+		// Let's clone the many to many relationships
+		if ($this->status === TDBMObjectStateEnum::STATE_DETACHED) {
+			$pivotTableList = array_keys($this->relationships);
+		} else {
+			$pivotTableList = $this->tdbmService->_getPivotTablesLinkedToBean($this);
+		}
+
+		foreach ($pivotTableList as $pivotTable) {
+			$storage = $this->retrieveRelationshipsStorage($pivotTable);
+
+			// Let's duplicate the reverse side of the relationship // This is useless: already done by "retrieveRelationshipsStorage"!!!
+			/*foreach ($storage as $remoteBean) {
                 $metadata = $storage[$remoteBean];
 
                 $remoteStorage = $remoteBean->getRelationshipStorage($pivotTable);
                 $remoteStorage->attach($this, ['status' => $metadata['status'], 'reverse' => !$metadata['reverse']]);
             }*/
-        }
-
-        // Let's clone each row
-        foreach ($this->dbRows as $key => &$dbRow) {
-            $dbRow = clone $dbRow;
-            $dbRow->setTDBMObject($this);
-        }
-
-        $this->manyToOneRelationships = [];
-
-        // Let's set the status to new (to enter the save function)
-        $this->status = TDBMObjectStateEnum::STATE_DETACHED;
-    }
-
-    /**
-     * Returns raw database rows.
-     *
-     * @return DbRow[] Key: table name, Value: DbRow object
-     */
-    public function _getDbRows()
-    {
-        return $this->dbRows;
-    }
-
-    private function registerTable($tableName)
-    {
-        $dbRow = new DbRow($this, $tableName);
-
-        if (in_array($this->status, [TDBMObjectStateEnum::STATE_NOT_LOADED, TDBMObjectStateEnum::STATE_LOADED, TDBMObjectStateEnum::STATE_DIRTY])) {
-            // Let's get the primary key for the new table
-            $anotherDbRow = array_values($this->dbRows)[0];
-            /* @var $anotherDbRow DbRow */
-            $indexedPrimaryKeys = array_values($anotherDbRow->_getPrimaryKeys());
-            $primaryKeys = $this->tdbmService->_getPrimaryKeysFromIndexedPrimaryKeys($tableName, $indexedPrimaryKeys);
-            $dbRow->_setPrimaryKeys($primaryKeys);
-        }
-
-        $dbRow->_setStatus($this->status);
-
-        $this->dbRows[$tableName] = $dbRow;
-        // TODO: look at status (if not new)=> get primary key from tdbmservice
-    }
-
-    /**
-     * Internal function: return the list of relationships.
-     *
-     * @return \SplObjectStorage[]
-     */
-    public function _getCachedRelationships()
-    {
-        return $this->relationships;
-    }
-
-    /**
-     * Returns an array of used tables by this bean (from parent to child relationship).
-     *
-     * @return string[]
-     */
-    abstract protected function getUsedTables();
+		}
+
+		// Let's clone each row
+		foreach ($this->dbRows as $key => &$dbRow) {
+			$dbRow = clone $dbRow;
+			$dbRow->setTDBMObject($this);
+		}
+
+		$this->manyToOneRelationships = [];
+
+		// Let's set the status to new (to enter the save function)
+		$this->status = TDBMObjectStateEnum::STATE_DETACHED;
+	}
+
+	/**
+	 * Returns raw database rows.
+	 *
+	 * @return DbRow[] Key: table name, Value: DbRow object
+	 */
+	public function _getDbRows()
+	{
+		return $this->dbRows;
+	}
+
+	private function registerTable($tableName)
+	{
+		$dbRow = new DbRow($this, $tableName);
+
+		if (in_array($this->status, [TDBMObjectStateEnum::STATE_NOT_LOADED, TDBMObjectStateEnum::STATE_LOADED, TDBMObjectStateEnum::STATE_DIRTY])) {
+			// Let's get the primary key for the new table
+			$anotherDbRow = array_values($this->dbRows)[0];
+			/* @var $anotherDbRow DbRow */
+			$indexedPrimaryKeys = array_values($anotherDbRow->_getPrimaryKeys());
+			$primaryKeys = $this->tdbmService->_getPrimaryKeysFromIndexedPrimaryKeys($tableName, $indexedPrimaryKeys);
+			$dbRow->_setPrimaryKeys($primaryKeys);
+		}
+
+		$dbRow->_setStatus($this->status);
+
+		$this->dbRows[$tableName] = $dbRow;
+		// TODO: look at status (if not new)=> get primary key from tdbmservice
+	}
+
+	/**
+	 * Internal function: return the list of relationships.
+	 *
+	 * @return \SplObjectStorage[]
+	 */
+	public function _getCachedRelationships()
+	{
+		return $this->relationships;
+	}
+
+	/**
+	 * Returns an array of used tables by this bean (from parent to child relationship).
+	 *
+	 * @return string[]
+	 */
+	abstract protected function getUsedTables();
 }

src/Mouf/Database/TDBM/OrderByAnalyzer.php

Indentation +118 added lines, -118 removed lines

@@ -12,122 +12,122 @@
  */
 class OrderByAnalyzer
 {
-    /**
-     * The content of the cache variable.
-     *
-     * @var Cache
-     */
-    private $cache;
-
-    /**
-     * @var string
-     */
-    private $cachePrefix;
-
-    /**
-     * OrderByAnalyzer constructor.
-     *
-     * @param Cache       $cache
-     * @param string|null $cachePrefix
-     */
-    public function __construct(Cache $cache, $cachePrefix = null)
-    {
-        $this->cache = $cache;
-        $this->cachePrefix = $cachePrefix;
-    }
-
-    /**
-     * Returns an array for each sorted "column" in the form:.
-     *
-     * [
-     *      [
-     *          'type' => 'colref',
-     *          'table' => null,
-     *          'column' => 'a',
-     *          'direction' => 'ASC'
-     *      ],
-     *      [
-     *          'type' => 'expr',
-     *          'expr' => 'RAND()',
-     *          'direction' => 'DESC'
-     *      ]
-     * ]
-     *
-     * @param string $orderBy
-     *
-     * @return array
-     */
-    public function analyzeOrderBy(string $orderBy) : array
-    {
-        $key = $this->cachePrefix.'_order_by_analysis_'.$orderBy;
-        $results = $this->cache->fetch($key);
-        if ($results !== false) {
-            return $results;
-        }
-        $results = $this->analyzeOrderByNoCache($orderBy);
-        $this->cache->save($key, $results);
-
-        return $results;
-    }
-
-    private function analyzeOrderByNoCache(string $orderBy) : array
-    {
-        $sqlParser = new PHPSQLParser();
-        $sql = 'SELECT 1 FROM a ORDER BY '.$orderBy;
-        $parsed = $sqlParser->parse($sql, true);
-
-        $results = [];
-
-        for ($i = 0, $count = count($parsed['ORDER']); $i < $count; ++$i) {
-            $orderItem = $parsed['ORDER'][$i];
-            if ($orderItem['expr_type'] === 'colref') {
-                $parts = $orderItem['no_quotes']['parts'];
-                $columnName = array_pop($parts);
-                if (!empty($parts)) {
-                    $tableName = array_pop($parts);
-                } else {
-                    $tableName = null;
-                }
-
-                $results[] = [
-                    'type' => 'colref',
-                    'table' => $tableName,
-                    'column' => $columnName,
-                    'direction' => $orderItem['direction'],
-                ];
-            } else {
-                $position = $orderItem['position'];
-                if ($i + 1 < $count) {
-                    $nextPosition = $parsed['ORDER'][$i + 1]['position'];
-                    $str = substr($sql, $position, $nextPosition - $position);
-                } else {
-                    $str = substr($sql, $position);
-                }
-
-                $str = trim($str, " \t\r\n,");
-
-                $results[] = [
-                    'type' => 'expr',
-                    'expr' => $this->trimDirection($str),
-                    'direction' => $orderItem['direction'],
-                ];
-            }
-        }
-
-        return $results;
-    }
-
-    /**
-     * Trims the ASC/DESC direction at the end of the string.
-     *
-     * @param string $sql
-     *
-     * @return string
-     */
-    private function trimDirection(string $sql) : string
-    {
-        preg_match('/^(.*)(\s+(DESC|ASC|))*$/Ui', $sql, $matches);
-
-        return $matches[1];
-    }
+	/**
+	 * The content of the cache variable.
+	 *
+	 * @var Cache
+	 */
+	private $cache;
+
+	/**
+	 * @var string
+	 */
+	private $cachePrefix;
+
+	/**
+	 * OrderByAnalyzer constructor.
+	 *
+	 * @param Cache       $cache
+	 * @param string|null $cachePrefix
+	 */
+	public function __construct(Cache $cache, $cachePrefix = null)
+	{
+		$this->cache = $cache;
+		$this->cachePrefix = $cachePrefix;
+	}
+
+	/**
+	 * Returns an array for each sorted "column" in the form:.
+	 *
+	 * [
+	 *      [
+	 *          'type' => 'colref',
+	 *          'table' => null,
+	 *          'column' => 'a',
+	 *          'direction' => 'ASC'
+	 *      ],
+	 *      [
+	 *          'type' => 'expr',
+	 *          'expr' => 'RAND()',
+	 *          'direction' => 'DESC'
+	 *      ]
+	 * ]
+	 *
+	 * @param string $orderBy
+	 *
+	 * @return array
+	 */
+	public function analyzeOrderBy(string $orderBy) : array
+	{
+		$key = $this->cachePrefix.'_order_by_analysis_'.$orderBy;
+		$results = $this->cache->fetch($key);
+		if ($results !== false) {
+			return $results;
+		}
+		$results = $this->analyzeOrderByNoCache($orderBy);
+		$this->cache->save($key, $results);
+
+		return $results;
+	}
+
+	private function analyzeOrderByNoCache(string $orderBy) : array
+	{
+		$sqlParser = new PHPSQLParser();
+		$sql = 'SELECT 1 FROM a ORDER BY '.$orderBy;
+		$parsed = $sqlParser->parse($sql, true);
+
+		$results = [];
+
+		for ($i = 0, $count = count($parsed['ORDER']); $i < $count; ++$i) {
+			$orderItem = $parsed['ORDER'][$i];
+			if ($orderItem['expr_type'] === 'colref') {
+				$parts = $orderItem['no_quotes']['parts'];
+				$columnName = array_pop($parts);
+				if (!empty($parts)) {
+					$tableName = array_pop($parts);
+				} else {
+					$tableName = null;
+				}
+
+				$results[] = [
+					'type' => 'colref',
+					'table' => $tableName,
+					'column' => $columnName,
+					'direction' => $orderItem['direction'],
+				];
+			} else {
+				$position = $orderItem['position'];
+				if ($i + 1 < $count) {
+					$nextPosition = $parsed['ORDER'][$i + 1]['position'];
+					$str = substr($sql, $position, $nextPosition - $position);
+				} else {
+					$str = substr($sql, $position);
+				}
+
+				$str = trim($str, " \t\r\n,");
+
+				$results[] = [
+					'type' => 'expr',
+					'expr' => $this->trimDirection($str),
+					'direction' => $orderItem['direction'],
+				];
+			}
+		}
+
+		return $results;
+	}
+
+	/**
+	 * Trims the ASC/DESC direction at the end of the string.
+	 *
+	 * @param string $sql
+	 *
+	 * @return string
+	 */
+	private function trimDirection(string $sql) : string
+	{
+		preg_match('/^(.*)(\s+(DESC|ASC|))*$/Ui', $sql, $matches);
+
+		return $matches[1];
+	}
 }

Spacing +4 added lines, -4 removed lines

@@ -78,7 +78,7 @@ 
 
         $results = [];
 
-        for ($i = 0, $count = count($parsed['ORDER']); $i < $count; ++$i) {
+        for ($i = 0, $count = count($parsed['ORDER']); $i<$count; ++$i) {
             $orderItem = $parsed['ORDER'][$i];
             if ($orderItem['expr_type'] === 'colref') {
                 $parts = $orderItem['no_quotes']['parts'];
@@ -97,9 +97,9 @@ 
                 ];
             } else {
                 $position = $orderItem['position'];
-                if ($i + 1 < $count) {
-                    $nextPosition = $parsed['ORDER'][$i + 1]['position'];
-                    $str = substr($sql, $position, $nextPosition - $position);
+                if ($i+1<$count) {
+                    $nextPosition = $parsed['ORDER'][$i+1]['position'];
+                    $str = substr($sql, $position, $nextPosition-$position);
                 } else {
                     $str = substr($sql, $position);
                 }

src/Mouf/Database/TDBM/TDBMService.php

Indentation +1634 added lines, -1634 removed lines

@@ -45,236 +45,236 @@ 
  */
 class TDBMService
 {
-    const MODE_CURSOR = 1;
-    const MODE_ARRAY = 2;
-
-    /**
-     * The database connection.
-     *
-     * @var Connection
-     */
-    private $connection;
-
-    /**
-     * @var SchemaAnalyzer
-     */
-    private $schemaAnalyzer;
-
-    /**
-     * @var MagicQuery
-     */
-    private $magicQuery;
-
-    /**
-     * @var TDBMSchemaAnalyzer
-     */
-    private $tdbmSchemaAnalyzer;
-
-    /**
-     * @var string
-     */
-    private $cachePrefix;
-
-    /**
-     * Cache of table of primary keys.
-     * Primary keys are stored by tables, as an array of column.
-     * For instance $primary_key['my_table'][0] will return the first column of the primary key of table 'my_table'.
-     *
-     * @var string[]
-     */
-    private $primaryKeysColumns;
-
-    /**
-     * Service storing objects in memory.
-     * Access is done by table name and then by primary key.
-     * If the primary key is split on several columns, access is done by an array of columns, serialized.
-     *
-     * @var StandardObjectStorage|WeakrefObjectStorage
-     */
-    private $objectStorage;
-
-    /**
-     * The fetch mode of the result sets returned by `getObjects`.
-     * Can be one of: TDBMObjectArray::MODE_CURSOR or TDBMObjectArray::MODE_ARRAY or TDBMObjectArray::MODE_COMPATIBLE_ARRAY.
-     *
-     * In 'MODE_ARRAY' mode (default), the result is an array. Use this mode by default (unless the list returned is very big).
-     * In 'MODE_CURSOR' mode, the result is a Generator which is an iterable collection that can be scanned only once (only one "foreach") on it,
-     * and it cannot be accessed via key. Use this mode for large datasets processed by batch.
-     * In 'MODE_COMPATIBLE_ARRAY' mode, the result is an old TDBMObjectArray (used up to TDBM 3.2).
-     * You can access the array by key, or using foreach, several times.
-     *
-     * @var int
-     */
-    private $mode = self::MODE_ARRAY;
-
-    /**
-     * Table of new objects not yet inserted in database or objects modified that must be saved.
-     *
-     * @var \SplObjectStorage of DbRow objects
-     */
-    private $toSaveObjects;
-
-    /**
-     * A cache service to be used.
-     *
-     * @var Cache|null
-     */
-    private $cache;
-
-    /**
-     * Map associating a table name to a fully qualified Bean class name.
-     *
-     * @var array
-     */
-    private $tableToBeanMap = [];
-
-    /**
-     * @var \ReflectionClass[]
-     */
-    private $reflectionClassCache = array();
-
-    /**
-     * @var LoggerInterface
-     */
-    private $rootLogger;
-
-    /**
-     * @var MinLogLevelFilter|NullLogger
-     */
-    private $logger;
-
-    /**
-     * @var OrderByAnalyzer
-     */
-    private $orderByAnalyzer;
-
-    /**
-     * @param Connection     $connection     The DBAL DB connection to use
-     * @param Cache|null     $cache          A cache service to be used
-     * @param SchemaAnalyzer $schemaAnalyzer The schema analyzer that will be used to find shortest paths...
-     *                                       Will be automatically created if not passed
-     */
-    public function __construct(Connection $connection, Cache $cache = null, SchemaAnalyzer $schemaAnalyzer = null, LoggerInterface $logger = null)
-    {
-        if (extension_loaded('weakref')) {
-            $this->objectStorage = new WeakrefObjectStorage();
-        } else {
-            $this->objectStorage = new StandardObjectStorage();
-        }
-        $this->connection = $connection;
-        if ($cache !== null) {
-            $this->cache = $cache;
-        } else {
-            $this->cache = new VoidCache();
-        }
-        if ($schemaAnalyzer) {
-            $this->schemaAnalyzer = $schemaAnalyzer;
-        } else {
-            $this->schemaAnalyzer = new SchemaAnalyzer($this->connection->getSchemaManager(), $this->cache, $this->getConnectionUniqueId());
-        }
-
-        $this->magicQuery = new MagicQuery($this->connection, $this->cache, $this->schemaAnalyzer);
-
-        $this->tdbmSchemaAnalyzer = new TDBMSchemaAnalyzer($connection, $this->cache, $this->schemaAnalyzer);
-        $this->cachePrefix = $this->tdbmSchemaAnalyzer->getCachePrefix();
-
-        $this->toSaveObjects = new \SplObjectStorage();
-        if ($logger === null) {
-            $this->logger = new NullLogger();
-            $this->rootLogger = new NullLogger();
-        } else {
-            $this->rootLogger = $logger;
-            $this->setLogLevel(LogLevel::WARNING);
-        }
-        $this->orderByAnalyzer = new OrderByAnalyzer($this->cache, $this->cachePrefix);
-    }
-
-    /**
-     * Returns the object used to connect to the database.
-     *
-     * @return Connection
-     */
-    public function getConnection()
-    {
-        return $this->connection;
-    }
-
-    /**
-     * Creates a unique cache key for the current connection.
-     *
-     * @return string
-     */
-    private function getConnectionUniqueId()
-    {
-        return hash('md4', $this->connection->getHost().'-'.$this->connection->getPort().'-'.$this->connection->getDatabase().'-'.$this->connection->getDriver()->getName());
-    }
-
-    /**
-     * Sets the default fetch mode of the result sets returned by `findObjects`.
-     * Can be one of: TDBMObjectArray::MODE_CURSOR or TDBMObjectArray::MODE_ARRAY.
-     *
-     * In 'MODE_ARRAY' mode (default), the result is a ResultIterator object that behaves like an array. Use this mode by default (unless the list returned is very big).
-     * In 'MODE_CURSOR' mode, the result is a ResultIterator object. If you scan it many times (by calling several time a foreach loop), the query will be run
-     * several times. In cursor mode, you cannot access the result set by key. Use this mode for large datasets processed by batch.
-     *
-     * @param int $mode
-     *
-     * @return $this
-     *
-     * @throws TDBMException
-     */
-    public function setFetchMode($mode)
-    {
-        if ($mode !== self::MODE_CURSOR && $mode !== self::MODE_ARRAY) {
-            throw new TDBMException("Unknown fetch mode: '".$this->mode."'");
-        }
-        $this->mode = $mode;
-
-        return $this;
-    }
-
-    /**
-     * Returns a TDBMObject associated from table "$table_name".
-     * If the $filters parameter is an int/string, the object returned will be the object whose primary key = $filters.
-     * $filters can also be a set of TDBM_Filters (see the findObjects method for more details).
-     *
-     * For instance, if there is a table 'users', with a primary key on column 'user_id' and a column 'user_name', then
-     * 			$user = $tdbmService->getObject('users',1);
-     * 			echo $user->name;
-     * will return the name of the user whose user_id is one.
-     *
-     * If a table has a primary key over several columns, you should pass to $id an array containing the the value of the various columns.
-     * For instance:
-     * 			$group = $tdbmService->getObject('groups',array(1,2));
-     *
-     * Note that TDBMObject performs caching for you. If you get twice the same object, the reference of the object you will get
-     * will be the same.
-     *
-     * For instance:
-     * 			$user1 = $tdbmService->getObject('users',1);
-     * 			$user2 = $tdbmService->getObject('users',1);
-     * 			$user1->name = 'John Doe';
-     * 			echo $user2->name;
-     * will return 'John Doe'.
-     *
-     * You can use filters instead of passing the primary key. For instance:
-     * 			$user = $tdbmService->getObject('users',new EqualFilter('users', 'login', 'jdoe'));
-     * This will return the user whose login is 'jdoe'.
-     * Please note that if 2 users have the jdoe login in database, the method will throw a TDBM_DuplicateRowException.
-     *
-     * Also, you can specify the return class for the object (provided the return class extends TDBMObject).
-     * For instance:
-     *  	$user = $tdbmService->getObject('users',1,'User');
-     * will return an object from the "User" class. The "User" class must extend the "TDBMObject" class.
-     * Please be sure not to override any method or any property unless you perfectly know what you are doing!
-     *
-     * @param string $table_name   The name of the table we retrieve an object from
-     * @param mixed  $filters      If the filter is a string/integer, it will be considered as the id of the object (the value of the primary key). Otherwise, it can be a filter bag (see the filterbag parameter of the findObjects method for more details about filter bags)
-     * @param string $className    Optional: The name of the class to instanciate. This class must extend the TDBMObject class. If none is specified, a TDBMObject instance will be returned
-     * @param bool   $lazy_loading If set to true, and if the primary key is passed in parameter of getObject, the object will not be queried in database. It will be queried when you first try to access a column. If at that time the object cannot be found in database, an exception will be thrown
-     *
-     * @return TDBMObject
-     */
+	const MODE_CURSOR = 1;
+	const MODE_ARRAY = 2;
+
+	/**
+	 * The database connection.
+	 *
+	 * @var Connection
+	 */
+	private $connection;
+
+	/**
+	 * @var SchemaAnalyzer
+	 */
+	private $schemaAnalyzer;
+
+	/**
+	 * @var MagicQuery
+	 */
+	private $magicQuery;
+
+	/**
+	 * @var TDBMSchemaAnalyzer
+	 */
+	private $tdbmSchemaAnalyzer;
+
+	/**
+	 * @var string
+	 */
+	private $cachePrefix;
+
+	/**
+	 * Cache of table of primary keys.
+	 * Primary keys are stored by tables, as an array of column.
+	 * For instance $primary_key['my_table'][0] will return the first column of the primary key of table 'my_table'.
+	 *
+	 * @var string[]
+	 */
+	private $primaryKeysColumns;
+
+	/**
+	 * Service storing objects in memory.
+	 * Access is done by table name and then by primary key.
+	 * If the primary key is split on several columns, access is done by an array of columns, serialized.
+	 *
+	 * @var StandardObjectStorage|WeakrefObjectStorage
+	 */
+	private $objectStorage;
+
+	/**
+	 * The fetch mode of the result sets returned by `getObjects`.
+	 * Can be one of: TDBMObjectArray::MODE_CURSOR or TDBMObjectArray::MODE_ARRAY or TDBMObjectArray::MODE_COMPATIBLE_ARRAY.
+	 *
+	 * In 'MODE_ARRAY' mode (default), the result is an array. Use this mode by default (unless the list returned is very big).
+	 * In 'MODE_CURSOR' mode, the result is a Generator which is an iterable collection that can be scanned only once (only one "foreach") on it,
+	 * and it cannot be accessed via key. Use this mode for large datasets processed by batch.
+	 * In 'MODE_COMPATIBLE_ARRAY' mode, the result is an old TDBMObjectArray (used up to TDBM 3.2).
+	 * You can access the array by key, or using foreach, several times.
+	 *
+	 * @var int
+	 */
+	private $mode = self::MODE_ARRAY;
+
+	/**
+	 * Table of new objects not yet inserted in database or objects modified that must be saved.
+	 *
+	 * @var \SplObjectStorage of DbRow objects
+	 */
+	private $toSaveObjects;
+
+	/**
+	 * A cache service to be used.
+	 *
+	 * @var Cache|null
+	 */
+	private $cache;
+
+	/**
+	 * Map associating a table name to a fully qualified Bean class name.
+	 *
+	 * @var array
+	 */
+	private $tableToBeanMap = [];
+
+	/**
+	 * @var \ReflectionClass[]
+	 */
+	private $reflectionClassCache = array();
+
+	/**
+	 * @var LoggerInterface
+	 */
+	private $rootLogger;
+
+	/**
+	 * @var MinLogLevelFilter|NullLogger
+	 */
+	private $logger;
+
+	/**
+	 * @var OrderByAnalyzer
+	 */
+	private $orderByAnalyzer;
+
+	/**
+	 * @param Connection     $connection     The DBAL DB connection to use
+	 * @param Cache|null     $cache          A cache service to be used
+	 * @param SchemaAnalyzer $schemaAnalyzer The schema analyzer that will be used to find shortest paths...
+	 *                                       Will be automatically created if not passed
+	 */
+	public function __construct(Connection $connection, Cache $cache = null, SchemaAnalyzer $schemaAnalyzer = null, LoggerInterface $logger = null)
+	{
+		if (extension_loaded('weakref')) {
+			$this->objectStorage = new WeakrefObjectStorage();
+		} else {
+			$this->objectStorage = new StandardObjectStorage();
+		}
+		$this->connection = $connection;
+		if ($cache !== null) {
+			$this->cache = $cache;
+		} else {
+			$this->cache = new VoidCache();
+		}
+		if ($schemaAnalyzer) {
+			$this->schemaAnalyzer = $schemaAnalyzer;
+		} else {
+			$this->schemaAnalyzer = new SchemaAnalyzer($this->connection->getSchemaManager(), $this->cache, $this->getConnectionUniqueId());
+		}
+
+		$this->magicQuery = new MagicQuery($this->connection, $this->cache, $this->schemaAnalyzer);
+
+		$this->tdbmSchemaAnalyzer = new TDBMSchemaAnalyzer($connection, $this->cache, $this->schemaAnalyzer);
+		$this->cachePrefix = $this->tdbmSchemaAnalyzer->getCachePrefix();
+
+		$this->toSaveObjects = new \SplObjectStorage();
+		if ($logger === null) {
+			$this->logger = new NullLogger();
+			$this->rootLogger = new NullLogger();
+		} else {
+			$this->rootLogger = $logger;
+			$this->setLogLevel(LogLevel::WARNING);
+		}
+		$this->orderByAnalyzer = new OrderByAnalyzer($this->cache, $this->cachePrefix);
+	}
+
+	/**
+	 * Returns the object used to connect to the database.
+	 *
+	 * @return Connection
+	 */
+	public function getConnection()
+	{
+		return $this->connection;
+	}
+
+	/**
+	 * Creates a unique cache key for the current connection.
+	 *
+	 * @return string
+	 */
+	private function getConnectionUniqueId()
+	{
+		return hash('md4', $this->connection->getHost().'-'.$this->connection->getPort().'-'.$this->connection->getDatabase().'-'.$this->connection->getDriver()->getName());
+	}
+
+	/**
+	 * Sets the default fetch mode of the result sets returned by `findObjects`.
+	 * Can be one of: TDBMObjectArray::MODE_CURSOR or TDBMObjectArray::MODE_ARRAY.
+	 *
+	 * In 'MODE_ARRAY' mode (default), the result is a ResultIterator object that behaves like an array. Use this mode by default (unless the list returned is very big).
+	 * In 'MODE_CURSOR' mode, the result is a ResultIterator object. If you scan it many times (by calling several time a foreach loop), the query will be run
+	 * several times. In cursor mode, you cannot access the result set by key. Use this mode for large datasets processed by batch.
+	 *
+	 * @param int $mode
+	 *
+	 * @return $this
+	 *
+	 * @throws TDBMException
+	 */
+	public function setFetchMode($mode)
+	{
+		if ($mode !== self::MODE_CURSOR && $mode !== self::MODE_ARRAY) {
+			throw new TDBMException("Unknown fetch mode: '".$this->mode."'");
+		}
+		$this->mode = $mode;
+
+		return $this;
+	}
+
+	/**
+	 * Returns a TDBMObject associated from table "$table_name".
+	 * If the $filters parameter is an int/string, the object returned will be the object whose primary key = $filters.
+	 * $filters can also be a set of TDBM_Filters (see the findObjects method for more details).
+	 *
+	 * For instance, if there is a table 'users', with a primary key on column 'user_id' and a column 'user_name', then
+	 * 			$user = $tdbmService->getObject('users',1);
+	 * 			echo $user->name;
+	 * will return the name of the user whose user_id is one.
+	 *
+	 * If a table has a primary key over several columns, you should pass to $id an array containing the the value of the various columns.
+	 * For instance:
+	 * 			$group = $tdbmService->getObject('groups',array(1,2));
+	 *
+	 * Note that TDBMObject performs caching for you. If you get twice the same object, the reference of the object you will get
+	 * will be the same.
+	 *
+	 * For instance:
+	 * 			$user1 = $tdbmService->getObject('users',1);
+	 * 			$user2 = $tdbmService->getObject('users',1);
+	 * 			$user1->name = 'John Doe';
+	 * 			echo $user2->name;
+	 * will return 'John Doe'.
+	 *
+	 * You can use filters instead of passing the primary key. For instance:
+	 * 			$user = $tdbmService->getObject('users',new EqualFilter('users', 'login', 'jdoe'));
+	 * This will return the user whose login is 'jdoe'.
+	 * Please note that if 2 users have the jdoe login in database, the method will throw a TDBM_DuplicateRowException.
+	 *
+	 * Also, you can specify the return class for the object (provided the return class extends TDBMObject).
+	 * For instance:
+	 *  	$user = $tdbmService->getObject('users',1,'User');
+	 * will return an object from the "User" class. The "User" class must extend the "TDBMObject" class.
+	 * Please be sure not to override any method or any property unless you perfectly know what you are doing!
+	 *
+	 * @param string $table_name   The name of the table we retrieve an object from
+	 * @param mixed  $filters      If the filter is a string/integer, it will be considered as the id of the object (the value of the primary key). Otherwise, it can be a filter bag (see the filterbag parameter of the findObjects method for more details about filter bags)
+	 * @param string $className    Optional: The name of the class to instanciate. This class must extend the TDBMObject class. If none is specified, a TDBMObject instance will be returned
+	 * @param bool   $lazy_loading If set to true, and if the primary key is passed in parameter of getObject, the object will not be queried in database. It will be queried when you first try to access a column. If at that time the object cannot be found in database, an exception will be thrown
+	 *
+	 * @return TDBMObject
+	 */
 /*	public function getObject($table_name, $filters, $className = null, $lazy_loading = false) {
 
         if (is_array($filters) || $filters instanceof FilterInterface) {
@@ -360,199 +360,199 @@ 
         return $obj;
     }*/
 
-    /**
-     * Removes the given object from database.
-     * This cannot be called on an object that is not attached to this TDBMService
-     * (will throw a TDBMInvalidOperationException).
-     *
-     * @param AbstractTDBMObject $object the object to delete
-     *
-     * @throws TDBMException
-     * @throws TDBMInvalidOperationException
-     */
-    public function delete(AbstractTDBMObject $object)
-    {
-        switch ($object->_getStatus()) {
-            case TDBMObjectStateEnum::STATE_DELETED:
-                // Nothing to do, object already deleted.
-                return;
-            case TDBMObjectStateEnum::STATE_DETACHED:
-                throw new TDBMInvalidOperationException('Cannot delete a detached object');
-            case TDBMObjectStateEnum::STATE_NEW:
-                $this->deleteManyToManyRelationships($object);
-                foreach ($object->_getDbRows() as $dbRow) {
-                    $this->removeFromToSaveObjectList($dbRow);
-                }
-                break;
-            case TDBMObjectStateEnum::STATE_DIRTY:
-                foreach ($object->_getDbRows() as $dbRow) {
-                    $this->removeFromToSaveObjectList($dbRow);
-                }
-                // And continue deleting...
-            case TDBMObjectStateEnum::STATE_NOT_LOADED:
-            case TDBMObjectStateEnum::STATE_LOADED:
-                $this->deleteManyToManyRelationships($object);
-                // Let's delete db rows, in reverse order.
-                foreach (array_reverse($object->_getDbRows()) as $dbRow) {
-                    $tableName = $dbRow->_getDbTableName();
-                    $primaryKeys = $dbRow->_getPrimaryKeys();
-                    $this->connection->delete($tableName, $primaryKeys);
-                    $this->objectStorage->remove($dbRow->_getDbTableName(), $this->getObjectHash($primaryKeys));
-                }
-                break;
-            // @codeCoverageIgnoreStart
-            default:
-                throw new TDBMInvalidOperationException('Unexpected status for bean');
-            // @codeCoverageIgnoreEnd
-        }
-
-        $object->_setStatus(TDBMObjectStateEnum::STATE_DELETED);
-    }
-
-    /**
-     * Removes all many to many relationships for this object.
-     *
-     * @param AbstractTDBMObject $object
-     */
-    private function deleteManyToManyRelationships(AbstractTDBMObject $object)
-    {
-        foreach ($object->_getDbRows() as $tableName => $dbRow) {
-            $pivotTables = $this->tdbmSchemaAnalyzer->getPivotTableLinkedToTable($tableName);
-            foreach ($pivotTables as $pivotTable) {
-                $remoteBeans = $object->_getRelationships($pivotTable);
-                foreach ($remoteBeans as $remoteBean) {
-                    $object->_removeRelationship($pivotTable, $remoteBean);
-                }
-            }
-        }
-        $this->persistManyToManyRelationships($object);
-    }
-
-    /**
-     * This function removes the given object from the database. It will also remove all objects relied to the one given
-     * by parameter before all.
-     *
-     * Notice: if the object has a multiple primary key, the function will not work.
-     *
-     * @param AbstractTDBMObject $objToDelete
-     */
-    public function deleteCascade(AbstractTDBMObject $objToDelete)
-    {
-        $this->deleteAllConstraintWithThisObject($objToDelete);
-        $this->delete($objToDelete);
-    }
-
-    /**
-     * This function is used only in TDBMService (private function)
-     * It will call deleteCascade function foreach object relied with a foreign key to the object given by parameter.
-     *
-     * @param AbstractTDBMObject $obj
-     */
-    private function deleteAllConstraintWithThisObject(AbstractTDBMObject $obj)
-    {
-        $dbRows = $obj->_getDbRows();
-        foreach ($dbRows as $dbRow) {
-            $tableName = $dbRow->_getDbTableName();
-            $pks = array_values($dbRow->_getPrimaryKeys());
-            if (!empty($pks)) {
-                $incomingFks = $this->tdbmSchemaAnalyzer->getIncomingForeignKeys($tableName);
-
-                foreach ($incomingFks as $incomingFk) {
-                    $filter = array_combine($incomingFk->getLocalColumns(), $pks);
-
-                    $results = $this->findObjects($incomingFk->getLocalTableName(), $filter);
-
-                    foreach ($results as $bean) {
-                        $this->deleteCascade($bean);
-                    }
-                }
-            }
-        }
-    }
-
-    /**
-     * This function performs a save() of all the objects that have been modified.
-     */
-    public function completeSave()
-    {
-        foreach ($this->toSaveObjects as $dbRow) {
-            $this->save($dbRow->getTDBMObject());
-        }
-    }
-
-    /**
-     * Takes in input a filter_bag (which can be about anything from a string to an array of TDBMObjects... see above from documentation),
-     * and gives back a proper Filter object.
-     *
-     * @param mixed $filter_bag
-     * @param int   $counter
-     *
-     * @return array First item: filter string, second item: parameters
-     *
-     * @throws TDBMException
-     */
-    public function buildFilterFromFilterBag($filter_bag, $counter = 1)
-    {
-        if ($filter_bag === null) {
-            return ['', []];
-        } elseif (is_string($filter_bag)) {
-            return [$filter_bag, []];
-        } elseif (is_array($filter_bag)) {
-            $sqlParts = [];
-            $parameters = [];
-            foreach ($filter_bag as $column => $value) {
-                if (is_int($column)) {
-                    list($subSqlPart, $subParameters) = $this->buildFilterFromFilterBag($value, $counter);
-                    $sqlParts[] = $subSqlPart;
-                    $parameters += $subParameters;
-                } else {
-                    $paramName = 'tdbmparam'.$counter;
-                    if (is_array($value)) {
-                        $sqlParts[] = $this->connection->quoteIdentifier($column).' IN :'.$paramName;
-                    } else {
-                        $sqlParts[] = $this->connection->quoteIdentifier($column).' = :'.$paramName;
-                    }
-                    $parameters[$paramName] = $value;
-                    ++$counter;
-                }
-            }
-
-            return [implode(' AND ', $sqlParts), $parameters];
-        } elseif ($filter_bag instanceof AbstractTDBMObject) {
-            $sqlParts = [];
-            $parameters = [];
-            $dbRows = $filter_bag->_getDbRows();
-            $dbRow = reset($dbRows);
-            $primaryKeys = $dbRow->_getPrimaryKeys();
-
-            foreach ($primaryKeys as $column => $value) {
-                $paramName = 'tdbmparam'.$counter;
-                $sqlParts[] = $this->connection->quoteIdentifier($dbRow->_getDbTableName()).'.'.$this->connection->quoteIdentifier($column).' = :'.$paramName;
-                $parameters[$paramName] = $value;
-                ++$counter;
-            }
-
-            return [implode(' AND ', $sqlParts), $parameters];
-        } elseif ($filter_bag instanceof \Iterator) {
-            return $this->buildFilterFromFilterBag(iterator_to_array($filter_bag), $counter);
-        } else {
-            throw new TDBMException('Error in filter. An object has been passed that is neither a SQL string, nor an array, nor a bean, nor null.');
-        }
-    }
-
-    /**
-     * @param string $table
-     *
-     * @return string[]
-     */
-    public function getPrimaryKeyColumns($table)
-    {
-        if (!isset($this->primaryKeysColumns[$table])) {
-            $this->primaryKeysColumns[$table] = $this->tdbmSchemaAnalyzer->getSchema()->getTable($table)->getPrimaryKeyColumns();
-
-            // TODO TDBM4: See if we need to improve error reporting if table name does not exist.
-
-            /*$arr = array();
+	/**
+	 * Removes the given object from database.
+	 * This cannot be called on an object that is not attached to this TDBMService
+	 * (will throw a TDBMInvalidOperationException).
+	 *
+	 * @param AbstractTDBMObject $object the object to delete
+	 *
+	 * @throws TDBMException
+	 * @throws TDBMInvalidOperationException
+	 */
+	public function delete(AbstractTDBMObject $object)
+	{
+		switch ($object->_getStatus()) {
+			case TDBMObjectStateEnum::STATE_DELETED:
+				// Nothing to do, object already deleted.
+				return;
+			case TDBMObjectStateEnum::STATE_DETACHED:
+				throw new TDBMInvalidOperationException('Cannot delete a detached object');
+			case TDBMObjectStateEnum::STATE_NEW:
+				$this->deleteManyToManyRelationships($object);
+				foreach ($object->_getDbRows() as $dbRow) {
+					$this->removeFromToSaveObjectList($dbRow);
+				}
+				break;
+			case TDBMObjectStateEnum::STATE_DIRTY:
+				foreach ($object->_getDbRows() as $dbRow) {
+					$this->removeFromToSaveObjectList($dbRow);
+				}
+				// And continue deleting...
+			case TDBMObjectStateEnum::STATE_NOT_LOADED:
+			case TDBMObjectStateEnum::STATE_LOADED:
+				$this->deleteManyToManyRelationships($object);
+				// Let's delete db rows, in reverse order.
+				foreach (array_reverse($object->_getDbRows()) as $dbRow) {
+					$tableName = $dbRow->_getDbTableName();
+					$primaryKeys = $dbRow->_getPrimaryKeys();
+					$this->connection->delete($tableName, $primaryKeys);
+					$this->objectStorage->remove($dbRow->_getDbTableName(), $this->getObjectHash($primaryKeys));
+				}
+				break;
+			// @codeCoverageIgnoreStart
+			default:
+				throw new TDBMInvalidOperationException('Unexpected status for bean');
+			// @codeCoverageIgnoreEnd
+		}
+
+		$object->_setStatus(TDBMObjectStateEnum::STATE_DELETED);
+	}
+
+	/**
+	 * Removes all many to many relationships for this object.
+	 *
+	 * @param AbstractTDBMObject $object
+	 */
+	private function deleteManyToManyRelationships(AbstractTDBMObject $object)
+	{
+		foreach ($object->_getDbRows() as $tableName => $dbRow) {
+			$pivotTables = $this->tdbmSchemaAnalyzer->getPivotTableLinkedToTable($tableName);
+			foreach ($pivotTables as $pivotTable) {
+				$remoteBeans = $object->_getRelationships($pivotTable);
+				foreach ($remoteBeans as $remoteBean) {
+					$object->_removeRelationship($pivotTable, $remoteBean);
+				}
+			}
+		}
+		$this->persistManyToManyRelationships($object);
+	}
+
+	/**
+	 * This function removes the given object from the database. It will also remove all objects relied to the one given
+	 * by parameter before all.
+	 *
+	 * Notice: if the object has a multiple primary key, the function will not work.
+	 *
+	 * @param AbstractTDBMObject $objToDelete
+	 */
+	public function deleteCascade(AbstractTDBMObject $objToDelete)
+	{
+		$this->deleteAllConstraintWithThisObject($objToDelete);
+		$this->delete($objToDelete);
+	}
+
+	/**
+	 * This function is used only in TDBMService (private function)
+	 * It will call deleteCascade function foreach object relied with a foreign key to the object given by parameter.
+	 *
+	 * @param AbstractTDBMObject $obj
+	 */
+	private function deleteAllConstraintWithThisObject(AbstractTDBMObject $obj)
+	{
+		$dbRows = $obj->_getDbRows();
+		foreach ($dbRows as $dbRow) {
+			$tableName = $dbRow->_getDbTableName();
+			$pks = array_values($dbRow->_getPrimaryKeys());
+			if (!empty($pks)) {
+				$incomingFks = $this->tdbmSchemaAnalyzer->getIncomingForeignKeys($tableName);
+
+				foreach ($incomingFks as $incomingFk) {
+					$filter = array_combine($incomingFk->getLocalColumns(), $pks);
+
+					$results = $this->findObjects($incomingFk->getLocalTableName(), $filter);
+
+					foreach ($results as $bean) {
+						$this->deleteCascade($bean);
+					}
+				}
+			}
+		}
+	}
+
+	/**
+	 * This function performs a save() of all the objects that have been modified.
+	 */
+	public function completeSave()
+	{
+		foreach ($this->toSaveObjects as $dbRow) {
+			$this->save($dbRow->getTDBMObject());
+		}
+	}
+
+	/**
+	 * Takes in input a filter_bag (which can be about anything from a string to an array of TDBMObjects... see above from documentation),
+	 * and gives back a proper Filter object.
+	 *
+	 * @param mixed $filter_bag
+	 * @param int   $counter
+	 *
+	 * @return array First item: filter string, second item: parameters
+	 *
+	 * @throws TDBMException
+	 */
+	public function buildFilterFromFilterBag($filter_bag, $counter = 1)
+	{
+		if ($filter_bag === null) {
+			return ['', []];
+		} elseif (is_string($filter_bag)) {
+			return [$filter_bag, []];
+		} elseif (is_array($filter_bag)) {
+			$sqlParts = [];
+			$parameters = [];
+			foreach ($filter_bag as $column => $value) {
+				if (is_int($column)) {
+					list($subSqlPart, $subParameters) = $this->buildFilterFromFilterBag($value, $counter);
+					$sqlParts[] = $subSqlPart;
+					$parameters += $subParameters;
+				} else {
+					$paramName = 'tdbmparam'.$counter;
+					if (is_array($value)) {
+						$sqlParts[] = $this->connection->quoteIdentifier($column).' IN :'.$paramName;
+					} else {
+						$sqlParts[] = $this->connection->quoteIdentifier($column).' = :'.$paramName;
+					}
+					$parameters[$paramName] = $value;
+					++$counter;
+				}
+			}
+
+			return [implode(' AND ', $sqlParts), $parameters];
+		} elseif ($filter_bag instanceof AbstractTDBMObject) {
+			$sqlParts = [];
+			$parameters = [];
+			$dbRows = $filter_bag->_getDbRows();
+			$dbRow = reset($dbRows);
+			$primaryKeys = $dbRow->_getPrimaryKeys();
+
+			foreach ($primaryKeys as $column => $value) {
+				$paramName = 'tdbmparam'.$counter;
+				$sqlParts[] = $this->connection->quoteIdentifier($dbRow->_getDbTableName()).'.'.$this->connection->quoteIdentifier($column).' = :'.$paramName;
+				$parameters[$paramName] = $value;
+				++$counter;
+			}
+
+			return [implode(' AND ', $sqlParts), $parameters];
+		} elseif ($filter_bag instanceof \Iterator) {
+			return $this->buildFilterFromFilterBag(iterator_to_array($filter_bag), $counter);
+		} else {
+			throw new TDBMException('Error in filter. An object has been passed that is neither a SQL string, nor an array, nor a bean, nor null.');
+		}
+	}
+
+	/**
+	 * @param string $table
+	 *
+	 * @return string[]
+	 */
+	public function getPrimaryKeyColumns($table)
+	{
+		if (!isset($this->primaryKeysColumns[$table])) {
+			$this->primaryKeysColumns[$table] = $this->tdbmSchemaAnalyzer->getSchema()->getTable($table)->getPrimaryKeyColumns();
+
+			// TODO TDBM4: See if we need to improve error reporting if table name does not exist.
+
+			/*$arr = array();
             foreach ($this->connection->getPrimaryKey($table) as $col) {
                 $arr[] = $col->name;
             }
@@ -573,141 +573,141 @@ 
                     throw new TDBMException($str);
                 }
             }*/
-        }
-
-        return $this->primaryKeysColumns[$table];
-    }
-
-    /**
-     * This is an internal function, you should not use it in your application.
-     * This is used internally by TDBM to add an object to the object cache.
-     *
-     * @param DbRow $dbRow
-     */
-    public function _addToCache(DbRow $dbRow)
-    {
-        $primaryKey = $this->getPrimaryKeysForObjectFromDbRow($dbRow);
-        $hash = $this->getObjectHash($primaryKey);
-        $this->objectStorage->set($dbRow->_getDbTableName(), $hash, $dbRow);
-    }
-
-    /**
-     * This is an internal function, you should not use it in your application.
-     * This is used internally by TDBM to remove the object from the list of objects that have been
-     * created/updated but not saved yet.
-     *
-     * @param DbRow $myObject
-     */
-    private function removeFromToSaveObjectList(DbRow $myObject)
-    {
-        unset($this->toSaveObjects[$myObject]);
-    }
-
-    /**
-     * This is an internal function, you should not use it in your application.
-     * This is used internally by TDBM to add an object to the list of objects that have been
-     * created/updated but not saved yet.
-     *
-     * @param AbstractTDBMObject $myObject
-     */
-    public function _addToToSaveObjectList(DbRow $myObject)
-    {
-        $this->toSaveObjects[$myObject] = true;
-    }
-
-    /**
-     * Generates all the daos and beans.
-     *
-     * @param string $daoFactoryClassName The classe name of the DAO factory
-     * @param string $daonamespace        The namespace for the DAOs, without trailing \
-     * @param string $beannamespace       The Namespace for the beans, without trailing \
-     * @param bool   $storeInUtc          If the generated daos should store the date in UTC timezone instead of user's timezone
-     * @param string $composerFile        If it's set, location of custom Composer file. Relative to project root
-     *
-     * @return \string[] the list of tables
-     */
-    public function generateAllDaosAndBeans($daoFactoryClassName, $daonamespace, $beannamespace, $storeInUtc, $composerFile = null)
-    {
-        // Purge cache before generating anything.
-        $this->cache->deleteAll();
-
-        $tdbmDaoGenerator = new TDBMDaoGenerator($this->schemaAnalyzer, $this->tdbmSchemaAnalyzer->getSchema(), $this->tdbmSchemaAnalyzer);
-        if (null !== $composerFile) {
-            $tdbmDaoGenerator->setComposerFile(__DIR__.'/../../../../../../../'.$composerFile);
-        }
-
-        return $tdbmDaoGenerator->generateAllDaosAndBeans($daoFactoryClassName, $daonamespace, $beannamespace, $storeInUtc);
-    }
-
-    /**
-     * @param array<string, string> $tableToBeanMap
-     */
-    public function setTableToBeanMap(array $tableToBeanMap)
-    {
-        $this->tableToBeanMap = $tableToBeanMap;
-    }
-
-    /**
-     * Saves $object by INSERTing or UPDAT(E)ing it in the database.
-     *
-     * @param AbstractTDBMObject $object
-     *
-     * @throws TDBMException
-     */
-    public function save(AbstractTDBMObject $object)
-    {
-        $status = $object->_getStatus();
-
-        if ($status === null) {
-            throw new TDBMException(sprintf('Your bean for class %s has no status. It is likely that you overloaded the __construct method and forgot to call parent::__construct.', get_class($object)));
-        }
-
-        // Let's attach this object if it is in detached state.
-        if ($status === TDBMObjectStateEnum::STATE_DETACHED) {
-            $object->_attach($this);
-            $status = $object->_getStatus();
-        }
-
-        if ($status === TDBMObjectStateEnum::STATE_NEW) {
-            $dbRows = $object->_getDbRows();
-
-            $unindexedPrimaryKeys = array();
-
-            foreach ($dbRows as $dbRow) {
-                $tableName = $dbRow->_getDbTableName();
-
-                $schema = $this->tdbmSchemaAnalyzer->getSchema();
-                $tableDescriptor = $schema->getTable($tableName);
-
-                $primaryKeyColumns = $this->getPrimaryKeyColumns($tableName);
-
-                if (empty($unindexedPrimaryKeys)) {
-                    $primaryKeys = $this->getPrimaryKeysForObjectFromDbRow($dbRow);
-                } else {
-                    // First insert, the children must have the same primary key as the parent.
-                    $primaryKeys = $this->_getPrimaryKeysFromIndexedPrimaryKeys($tableName, $unindexedPrimaryKeys);
-                    $dbRow->_setPrimaryKeys($primaryKeys);
-                }
-
-                $references = $dbRow->_getReferences();
-
-                // Let's save all references in NEW or DETACHED state (we need their primary key)
-                foreach ($references as $fkName => $reference) {
-                    if ($reference !== null) {
-                        $refStatus = $reference->_getStatus();
-                        if ($refStatus === TDBMObjectStateEnum::STATE_NEW || $refStatus === TDBMObjectStateEnum::STATE_DETACHED) {
-                            $this->save($reference);
-                        }
-                    }
-                }
-
-                $dbRowData = $dbRow->_getDbRow();
-
-                // Let's see if the columns for primary key have been set before inserting.
-                // We assume that if one of the value of the PK has been set, the PK is set.
-                $isPkSet = !empty($primaryKeys);
-
-                /*if (!$isPkSet) {
+		}
+
+		return $this->primaryKeysColumns[$table];
+	}
+
+	/**
+	 * This is an internal function, you should not use it in your application.
+	 * This is used internally by TDBM to add an object to the object cache.
+	 *
+	 * @param DbRow $dbRow
+	 */
+	public function _addToCache(DbRow $dbRow)
+	{
+		$primaryKey = $this->getPrimaryKeysForObjectFromDbRow($dbRow);
+		$hash = $this->getObjectHash($primaryKey);
+		$this->objectStorage->set($dbRow->_getDbTableName(), $hash, $dbRow);
+	}
+
+	/**
+	 * This is an internal function, you should not use it in your application.
+	 * This is used internally by TDBM to remove the object from the list of objects that have been
+	 * created/updated but not saved yet.
+	 *
+	 * @param DbRow $myObject
+	 */
+	private function removeFromToSaveObjectList(DbRow $myObject)
+	{
+		unset($this->toSaveObjects[$myObject]);
+	}
+
+	/**
+	 * This is an internal function, you should not use it in your application.
+	 * This is used internally by TDBM to add an object to the list of objects that have been
+	 * created/updated but not saved yet.
+	 *
+	 * @param AbstractTDBMObject $myObject
+	 */
+	public function _addToToSaveObjectList(DbRow $myObject)
+	{
+		$this->toSaveObjects[$myObject] = true;
+	}
+
+	/**
+	 * Generates all the daos and beans.
+	 *
+	 * @param string $daoFactoryClassName The classe name of the DAO factory
+	 * @param string $daonamespace        The namespace for the DAOs, without trailing \
+	 * @param string $beannamespace       The Namespace for the beans, without trailing \
+	 * @param bool   $storeInUtc          If the generated daos should store the date in UTC timezone instead of user's timezone
+	 * @param string $composerFile        If it's set, location of custom Composer file. Relative to project root
+	 *
+	 * @return \string[] the list of tables
+	 */
+	public function generateAllDaosAndBeans($daoFactoryClassName, $daonamespace, $beannamespace, $storeInUtc, $composerFile = null)
+	{
+		// Purge cache before generating anything.
+		$this->cache->deleteAll();
+
+		$tdbmDaoGenerator = new TDBMDaoGenerator($this->schemaAnalyzer, $this->tdbmSchemaAnalyzer->getSchema(), $this->tdbmSchemaAnalyzer);
+		if (null !== $composerFile) {
+			$tdbmDaoGenerator->setComposerFile(__DIR__.'/../../../../../../../'.$composerFile);
+		}
+
+		return $tdbmDaoGenerator->generateAllDaosAndBeans($daoFactoryClassName, $daonamespace, $beannamespace, $storeInUtc);
+	}
+
+	/**
+	 * @param array<string, string> $tableToBeanMap
+	 */
+	public function setTableToBeanMap(array $tableToBeanMap)
+	{
+		$this->tableToBeanMap = $tableToBeanMap;
+	}
+
+	/**
+	 * Saves $object by INSERTing or UPDAT(E)ing it in the database.
+	 *
+	 * @param AbstractTDBMObject $object
+	 *
+	 * @throws TDBMException
+	 */
+	public function save(AbstractTDBMObject $object)
+	{
+		$status = $object->_getStatus();
+
+		if ($status === null) {
+			throw new TDBMException(sprintf('Your bean for class %s has no status. It is likely that you overloaded the __construct method and forgot to call parent::__construct.', get_class($object)));
+		}
+
+		// Let's attach this object if it is in detached state.
+		if ($status === TDBMObjectStateEnum::STATE_DETACHED) {
+			$object->_attach($this);
+			$status = $object->_getStatus();
+		}
+
+		if ($status === TDBMObjectStateEnum::STATE_NEW) {
+			$dbRows = $object->_getDbRows();
+
+			$unindexedPrimaryKeys = array();
+
+			foreach ($dbRows as $dbRow) {
+				$tableName = $dbRow->_getDbTableName();
+
+				$schema = $this->tdbmSchemaAnalyzer->getSchema();
+				$tableDescriptor = $schema->getTable($tableName);
+
+				$primaryKeyColumns = $this->getPrimaryKeyColumns($tableName);
+
+				if (empty($unindexedPrimaryKeys)) {
+					$primaryKeys = $this->getPrimaryKeysForObjectFromDbRow($dbRow);
+				} else {
+					// First insert, the children must have the same primary key as the parent.
+					$primaryKeys = $this->_getPrimaryKeysFromIndexedPrimaryKeys($tableName, $unindexedPrimaryKeys);
+					$dbRow->_setPrimaryKeys($primaryKeys);
+				}
+
+				$references = $dbRow->_getReferences();
+
+				// Let's save all references in NEW or DETACHED state (we need their primary key)
+				foreach ($references as $fkName => $reference) {
+					if ($reference !== null) {
+						$refStatus = $reference->_getStatus();
+						if ($refStatus === TDBMObjectStateEnum::STATE_NEW || $refStatus === TDBMObjectStateEnum::STATE_DETACHED) {
+							$this->save($reference);
+						}
+					}
+				}
+
+				$dbRowData = $dbRow->_getDbRow();
+
+				// Let's see if the columns for primary key have been set before inserting.
+				// We assume that if one of the value of the PK has been set, the PK is set.
+				$isPkSet = !empty($primaryKeys);
+
+				/*if (!$isPkSet) {
                     // if there is no autoincrement and no pk set, let's go in error.
                     $isAutoIncrement = true;
 
@@ -725,27 +725,27 @@ 
 
                 }*/
 
-                $types = [];
-                $escapedDbRowData = [];
+				$types = [];
+				$escapedDbRowData = [];
 
-                foreach ($dbRowData as $columnName => $value) {
-                    $columnDescriptor = $tableDescriptor->getColumn($columnName);
-                    $types[] = $columnDescriptor->getType();
-                    $escapedDbRowData[$this->connection->quoteIdentifier($columnName)] = $value;
-                }
+				foreach ($dbRowData as $columnName => $value) {
+					$columnDescriptor = $tableDescriptor->getColumn($columnName);
+					$types[] = $columnDescriptor->getType();
+					$escapedDbRowData[$this->connection->quoteIdentifier($columnName)] = $value;
+				}
 
-                $this->connection->insert($tableName, $escapedDbRowData, $types);
+				$this->connection->insert($tableName, $escapedDbRowData, $types);
 
-                if (!$isPkSet && count($primaryKeyColumns) == 1) {
-                    $id = $this->connection->lastInsertId();
-                    $primaryKeys[$primaryKeyColumns[0]] = $id;
-                }
+				if (!$isPkSet && count($primaryKeyColumns) == 1) {
+					$id = $this->connection->lastInsertId();
+					$primaryKeys[$primaryKeyColumns[0]] = $id;
+				}
 
-                // TODO: change this to some private magic accessor in future
-                $dbRow->_setPrimaryKeys($primaryKeys);
-                $unindexedPrimaryKeys = array_values($primaryKeys);
+				// TODO: change this to some private magic accessor in future
+				$dbRow->_setPrimaryKeys($primaryKeys);
+				$unindexedPrimaryKeys = array_values($primaryKeys);
 
-                /*
+				/*
                  * When attached, on "save", we check if the column updated is part of a primary key
                  * If this is part of a primary key, we call the _update_id method that updates the id in the list of known objects.
                  * This method should first verify that the id is not already used (and is not auto-incremented)
@@ -755,7 +755,7 @@ 
                  *
                  */
 
-                /*try {
+				/*try {
                     $this->db_connection->exec($sql);
                 } catch (TDBMException $e) {
                     $this->db_onerror = true;
@@ -774,468 +774,468 @@ 
                     }
                 }*/
 
-                // Let's remove this object from the $new_objects static table.
-                $this->removeFromToSaveObjectList($dbRow);
-
-                // TODO: change this behaviour to something more sensible performance-wise
-                // Maybe a setting to trigger this globally?
-                //$this->status = TDBMObjectStateEnum::STATE_NOT_LOADED;
-                //$this->db_modified_state = false;
-                //$dbRow = array();
-
-                // Let's add this object to the list of objects in cache.
-                $this->_addToCache($dbRow);
-            }
-
-            $object->_setStatus(TDBMObjectStateEnum::STATE_LOADED);
-        } elseif ($status === TDBMObjectStateEnum::STATE_DIRTY) {
-            $dbRows = $object->_getDbRows();
-
-            foreach ($dbRows as $dbRow) {
-                $references = $dbRow->_getReferences();
-
-                // Let's save all references in NEW state (we need their primary key)
-                foreach ($references as $fkName => $reference) {
-                    if ($reference !== null && $reference->_getStatus() === TDBMObjectStateEnum::STATE_NEW) {
-                        $this->save($reference);
-                    }
-                }
-
-                // Let's first get the primary keys
-                $tableName = $dbRow->_getDbTableName();
-                $dbRowData = $dbRow->_getDbRow();
-
-                $schema = $this->tdbmSchemaAnalyzer->getSchema();
-                $tableDescriptor = $schema->getTable($tableName);
-
-                $primaryKeys = $dbRow->_getPrimaryKeys();
-
-                $types = [];
-                $escapedDbRowData = [];
-                $escapedPrimaryKeys = [];
-
-                foreach ($dbRowData as $columnName => $value) {
-                    $columnDescriptor = $tableDescriptor->getColumn($columnName);
-                    $types[] = $columnDescriptor->getType();
-                    $escapedDbRowData[$this->connection->quoteIdentifier($columnName)] = $value;
-                }
-                foreach ($primaryKeys as $columnName => $value) {
-                    $columnDescriptor = $tableDescriptor->getColumn($columnName);
-                    $types[] = $columnDescriptor->getType();
-                    $escapedPrimaryKeys[$this->connection->quoteIdentifier($columnName)] = $value;
-                }
-
-                $this->connection->update($tableName, $escapedDbRowData, $escapedPrimaryKeys, $types);
-
-                // Let's check if the primary key has been updated...
-                $needsUpdatePk = false;
-                foreach ($primaryKeys as $column => $value) {
-                    if (!isset($dbRowData[$column]) || $dbRowData[$column] != $value) {
-                        $needsUpdatePk = true;
-                        break;
-                    }
-                }
-                if ($needsUpdatePk) {
-                    $this->objectStorage->remove($tableName, $this->getObjectHash($primaryKeys));
-                    $newPrimaryKeys = $this->getPrimaryKeysForObjectFromDbRow($dbRow);
-                    $dbRow->_setPrimaryKeys($newPrimaryKeys);
-                    $this->objectStorage->set($tableName, $this->getObjectHash($primaryKeys), $dbRow);
-                }
-
-                // Let's remove this object from the list of objects to save.
-                $this->removeFromToSaveObjectList($dbRow);
-            }
-
-            $object->_setStatus(TDBMObjectStateEnum::STATE_LOADED);
-        } elseif ($status === TDBMObjectStateEnum::STATE_DELETED) {
-            throw new TDBMInvalidOperationException('This object has been deleted. It cannot be saved.');
-        }
-
-        // Finally, let's save all the many to many relationships to this bean.
-        $this->persistManyToManyRelationships($object);
-    }
-
-    private function persistManyToManyRelationships(AbstractTDBMObject $object)
-    {
-        foreach ($object->_getCachedRelationships() as $pivotTableName => $storage) {
-            $tableDescriptor = $this->tdbmSchemaAnalyzer->getSchema()->getTable($pivotTableName);
-            list($localFk, $remoteFk) = $this->getPivotTableForeignKeys($pivotTableName, $object);
-
-            $toRemoveFromStorage = [];
-
-            foreach ($storage as $remoteBean) {
-                /* @var $remoteBean AbstractTDBMObject */
-                $statusArr = $storage[$remoteBean];
-                $status = $statusArr['status'];
-                $reverse = $statusArr['reverse'];
-                if ($reverse) {
-                    continue;
-                }
-
-                if ($status === 'new') {
-                    $remoteBeanStatus = $remoteBean->_getStatus();
-                    if ($remoteBeanStatus === TDBMObjectStateEnum::STATE_NEW || $remoteBeanStatus === TDBMObjectStateEnum::STATE_DETACHED) {
-                        // Let's save remote bean if needed.
-                        $this->save($remoteBean);
-                    }
-
-                    $filters = $this->getPivotFilters($object, $remoteBean, $localFk, $remoteFk);
-
-                    $types = [];
-                    $escapedFilters = [];
-
-                    foreach ($filters as $columnName => $value) {
-                        $columnDescriptor = $tableDescriptor->getColumn($columnName);
-                        $types[] = $columnDescriptor->getType();
-                        $escapedFilters[$this->connection->quoteIdentifier($columnName)] = $value;
-                    }
-
-                    $this->connection->insert($pivotTableName, $escapedFilters, $types);
-
-                    // Finally, let's mark relationships as saved.
-                    $statusArr['status'] = 'loaded';
-                    $storage[$remoteBean] = $statusArr;
-                    $remoteStorage = $remoteBean->_getCachedRelationships()[$pivotTableName];
-                    $remoteStatusArr = $remoteStorage[$object];
-                    $remoteStatusArr['status'] = 'loaded';
-                    $remoteStorage[$object] = $remoteStatusArr;
-                } elseif ($status === 'delete') {
-                    $filters = $this->getPivotFilters($object, $remoteBean, $localFk, $remoteFk);
-
-                    $types = [];
-
-                    foreach ($filters as $columnName => $value) {
-                        $columnDescriptor = $tableDescriptor->getColumn($columnName);
-                        $types[] = $columnDescriptor->getType();
-                    }
-
-                    $this->connection->delete($pivotTableName, $filters, $types);
-
-                    // Finally, let's remove relationships completely from bean.
-                    $toRemoveFromStorage[] = $remoteBean;
-
-                    $remoteBean->_getCachedRelationships()[$pivotTableName]->detach($object);
-                }
-            }
-
-            // Note: due to https://bugs.php.net/bug.php?id=65629, we cannot delete an element inside a foreach loop on a SplStorageObject.
-            // Therefore, we cache elements in the $toRemoveFromStorage to remove them at a later stage.
-            foreach ($toRemoveFromStorage as $remoteBean) {
-                $storage->detach($remoteBean);
-            }
-        }
-    }
-
-    private function getPivotFilters(AbstractTDBMObject $localBean, AbstractTDBMObject $remoteBean, ForeignKeyConstraint $localFk, ForeignKeyConstraint $remoteFk)
-    {
-        $localBeanPk = $this->getPrimaryKeyValues($localBean);
-        $remoteBeanPk = $this->getPrimaryKeyValues($remoteBean);
-        $localColumns = $localFk->getLocalColumns();
-        $remoteColumns = $remoteFk->getLocalColumns();
-
-        $localFilters = array_combine($localColumns, $localBeanPk);
-        $remoteFilters = array_combine($remoteColumns, $remoteBeanPk);
-
-        return array_merge($localFilters, $remoteFilters);
-    }
-
-    /**
-     * Returns the "values" of the primary key.
-     * This returns the primary key from the $primaryKey attribute, not the one stored in the columns.
-     *
-     * @param AbstractTDBMObject $bean
-     *
-     * @return array numerically indexed array of values
-     */
-    private function getPrimaryKeyValues(AbstractTDBMObject $bean)
-    {
-        $dbRows = $bean->_getDbRows();
-        $dbRow = reset($dbRows);
-
-        return array_values($dbRow->_getPrimaryKeys());
-    }
-
-    /**
-     * Returns a unique hash used to store the object based on its primary key.
-     * If the array contains only one value, then the value is returned.
-     * Otherwise, a hash representing the array is returned.
-     *
-     * @param array $primaryKeys An array of columns => values forming the primary key
-     *
-     * @return string
-     */
-    public function getObjectHash(array $primaryKeys)
-    {
-        if (count($primaryKeys) === 1) {
-            return reset($primaryKeys);
-        } else {
-            ksort($primaryKeys);
-
-            return md5(json_encode($primaryKeys));
-        }
-    }
-
-    /**
-     * Returns an array of primary keys from the object.
-     * The primary keys are extracted from the object columns and not from the primary keys stored in the
-     * $primaryKeys variable of the object.
-     *
-     * @param DbRow $dbRow
-     *
-     * @return array Returns an array of column => value
-     */
-    public function getPrimaryKeysForObjectFromDbRow(DbRow $dbRow)
-    {
-        $table = $dbRow->_getDbTableName();
-        $dbRowData = $dbRow->_getDbRow();
-
-        return $this->_getPrimaryKeysFromObjectData($table, $dbRowData);
-    }
-
-    /**
-     * Returns an array of primary keys for the given row.
-     * The primary keys are extracted from the object columns.
-     *
-     * @param $table
-     * @param array $columns
-     *
-     * @return array
-     */
-    public function _getPrimaryKeysFromObjectData($table, array $columns)
-    {
-        $primaryKeyColumns = $this->getPrimaryKeyColumns($table);
-        $values = array();
-        foreach ($primaryKeyColumns as $column) {
-            if (isset($columns[$column])) {
-                $values[$column] = $columns[$column];
-            }
-        }
-
-        return $values;
-    }
-
-    /**
-     * Attaches $object to this TDBMService.
-     * The $object must be in DETACHED state and will pass in NEW state.
-     *
-     * @param AbstractTDBMObject $object
-     *
-     * @throws TDBMInvalidOperationException
-     */
-    public function attach(AbstractTDBMObject $object)
-    {
-        $object->_attach($this);
-    }
-
-    /**
-     * Returns an associative array (column => value) for the primary keys from the table name and an
-     * indexed array of primary key values.
-     *
-     * @param string $tableName
-     * @param array  $indexedPrimaryKeys
-     */
-    public function _getPrimaryKeysFromIndexedPrimaryKeys($tableName, array $indexedPrimaryKeys)
-    {
-        $primaryKeyColumns = $this->tdbmSchemaAnalyzer->getSchema()->getTable($tableName)->getPrimaryKeyColumns();
-
-        if (count($primaryKeyColumns) !== count($indexedPrimaryKeys)) {
-            throw new TDBMException(sprintf('Wrong number of columns passed for primary key. Expected %s columns for table "%s",
+				// Let's remove this object from the $new_objects static table.
+				$this->removeFromToSaveObjectList($dbRow);
+
+				// TODO: change this behaviour to something more sensible performance-wise
+				// Maybe a setting to trigger this globally?
+				//$this->status = TDBMObjectStateEnum::STATE_NOT_LOADED;
+				//$this->db_modified_state = false;
+				//$dbRow = array();
+
+				// Let's add this object to the list of objects in cache.
+				$this->_addToCache($dbRow);
+			}
+
+			$object->_setStatus(TDBMObjectStateEnum::STATE_LOADED);
+		} elseif ($status === TDBMObjectStateEnum::STATE_DIRTY) {
+			$dbRows = $object->_getDbRows();
+
+			foreach ($dbRows as $dbRow) {
+				$references = $dbRow->_getReferences();
+
+				// Let's save all references in NEW state (we need their primary key)
+				foreach ($references as $fkName => $reference) {
+					if ($reference !== null && $reference->_getStatus() === TDBMObjectStateEnum::STATE_NEW) {
+						$this->save($reference);
+					}
+				}
+
+				// Let's first get the primary keys
+				$tableName = $dbRow->_getDbTableName();
+				$dbRowData = $dbRow->_getDbRow();
+
+				$schema = $this->tdbmSchemaAnalyzer->getSchema();
+				$tableDescriptor = $schema->getTable($tableName);
+
+				$primaryKeys = $dbRow->_getPrimaryKeys();
+
+				$types = [];
+				$escapedDbRowData = [];
+				$escapedPrimaryKeys = [];
+
+				foreach ($dbRowData as $columnName => $value) {
+					$columnDescriptor = $tableDescriptor->getColumn($columnName);
+					$types[] = $columnDescriptor->getType();
+					$escapedDbRowData[$this->connection->quoteIdentifier($columnName)] = $value;
+				}
+				foreach ($primaryKeys as $columnName => $value) {
+					$columnDescriptor = $tableDescriptor->getColumn($columnName);
+					$types[] = $columnDescriptor->getType();
+					$escapedPrimaryKeys[$this->connection->quoteIdentifier($columnName)] = $value;
+				}
+
+				$this->connection->update($tableName, $escapedDbRowData, $escapedPrimaryKeys, $types);
+
+				// Let's check if the primary key has been updated...
+				$needsUpdatePk = false;
+				foreach ($primaryKeys as $column => $value) {
+					if (!isset($dbRowData[$column]) || $dbRowData[$column] != $value) {
+						$needsUpdatePk = true;
+						break;
+					}
+				}
+				if ($needsUpdatePk) {
+					$this->objectStorage->remove($tableName, $this->getObjectHash($primaryKeys));
+					$newPrimaryKeys = $this->getPrimaryKeysForObjectFromDbRow($dbRow);
+					$dbRow->_setPrimaryKeys($newPrimaryKeys);
+					$this->objectStorage->set($tableName, $this->getObjectHash($primaryKeys), $dbRow);
+				}
+
+				// Let's remove this object from the list of objects to save.
+				$this->removeFromToSaveObjectList($dbRow);
+			}
+
+			$object->_setStatus(TDBMObjectStateEnum::STATE_LOADED);
+		} elseif ($status === TDBMObjectStateEnum::STATE_DELETED) {
+			throw new TDBMInvalidOperationException('This object has been deleted. It cannot be saved.');
+		}
+
+		// Finally, let's save all the many to many relationships to this bean.
+		$this->persistManyToManyRelationships($object);
+	}
+
+	private function persistManyToManyRelationships(AbstractTDBMObject $object)
+	{
+		foreach ($object->_getCachedRelationships() as $pivotTableName => $storage) {
+			$tableDescriptor = $this->tdbmSchemaAnalyzer->getSchema()->getTable($pivotTableName);
+			list($localFk, $remoteFk) = $this->getPivotTableForeignKeys($pivotTableName, $object);
+
+			$toRemoveFromStorage = [];
+
+			foreach ($storage as $remoteBean) {
+				/* @var $remoteBean AbstractTDBMObject */
+				$statusArr = $storage[$remoteBean];
+				$status = $statusArr['status'];
+				$reverse = $statusArr['reverse'];
+				if ($reverse) {
+					continue;
+				}
+
+				if ($status === 'new') {
+					$remoteBeanStatus = $remoteBean->_getStatus();
+					if ($remoteBeanStatus === TDBMObjectStateEnum::STATE_NEW || $remoteBeanStatus === TDBMObjectStateEnum::STATE_DETACHED) {
+						// Let's save remote bean if needed.
+						$this->save($remoteBean);
+					}
+
+					$filters = $this->getPivotFilters($object, $remoteBean, $localFk, $remoteFk);
+
+					$types = [];
+					$escapedFilters = [];
+
+					foreach ($filters as $columnName => $value) {
+						$columnDescriptor = $tableDescriptor->getColumn($columnName);
+						$types[] = $columnDescriptor->getType();
+						$escapedFilters[$this->connection->quoteIdentifier($columnName)] = $value;
+					}
+
+					$this->connection->insert($pivotTableName, $escapedFilters, $types);
+
+					// Finally, let's mark relationships as saved.
+					$statusArr['status'] = 'loaded';
+					$storage[$remoteBean] = $statusArr;
+					$remoteStorage = $remoteBean->_getCachedRelationships()[$pivotTableName];
+					$remoteStatusArr = $remoteStorage[$object];
+					$remoteStatusArr['status'] = 'loaded';
+					$remoteStorage[$object] = $remoteStatusArr;
+				} elseif ($status === 'delete') {
+					$filters = $this->getPivotFilters($object, $remoteBean, $localFk, $remoteFk);
+
+					$types = [];
+
+					foreach ($filters as $columnName => $value) {
+						$columnDescriptor = $tableDescriptor->getColumn($columnName);
+						$types[] = $columnDescriptor->getType();
+					}
+
+					$this->connection->delete($pivotTableName, $filters, $types);
+
+					// Finally, let's remove relationships completely from bean.
+					$toRemoveFromStorage[] = $remoteBean;
+
+					$remoteBean->_getCachedRelationships()[$pivotTableName]->detach($object);
+				}
+			}
+
+			// Note: due to https://bugs.php.net/bug.php?id=65629, we cannot delete an element inside a foreach loop on a SplStorageObject.
+			// Therefore, we cache elements in the $toRemoveFromStorage to remove them at a later stage.
+			foreach ($toRemoveFromStorage as $remoteBean) {
+				$storage->detach($remoteBean);
+			}
+		}
+	}
+
+	private function getPivotFilters(AbstractTDBMObject $localBean, AbstractTDBMObject $remoteBean, ForeignKeyConstraint $localFk, ForeignKeyConstraint $remoteFk)
+	{
+		$localBeanPk = $this->getPrimaryKeyValues($localBean);
+		$remoteBeanPk = $this->getPrimaryKeyValues($remoteBean);
+		$localColumns = $localFk->getLocalColumns();
+		$remoteColumns = $remoteFk->getLocalColumns();
+
+		$localFilters = array_combine($localColumns, $localBeanPk);
+		$remoteFilters = array_combine($remoteColumns, $remoteBeanPk);
+
+		return array_merge($localFilters, $remoteFilters);
+	}
+
+	/**
+	 * Returns the "values" of the primary key.
+	 * This returns the primary key from the $primaryKey attribute, not the one stored in the columns.
+	 *
+	 * @param AbstractTDBMObject $bean
+	 *
+	 * @return array numerically indexed array of values
+	 */
+	private function getPrimaryKeyValues(AbstractTDBMObject $bean)
+	{
+		$dbRows = $bean->_getDbRows();
+		$dbRow = reset($dbRows);
+
+		return array_values($dbRow->_getPrimaryKeys());
+	}
+
+	/**
+	 * Returns a unique hash used to store the object based on its primary key.
+	 * If the array contains only one value, then the value is returned.
+	 * Otherwise, a hash representing the array is returned.
+	 *
+	 * @param array $primaryKeys An array of columns => values forming the primary key
+	 *
+	 * @return string
+	 */
+	public function getObjectHash(array $primaryKeys)
+	{
+		if (count($primaryKeys) === 1) {
+			return reset($primaryKeys);
+		} else {
+			ksort($primaryKeys);
+
+			return md5(json_encode($primaryKeys));
+		}
+	}
+
+	/**
+	 * Returns an array of primary keys from the object.
+	 * The primary keys are extracted from the object columns and not from the primary keys stored in the
+	 * $primaryKeys variable of the object.
+	 *
+	 * @param DbRow $dbRow
+	 *
+	 * @return array Returns an array of column => value
+	 */
+	public function getPrimaryKeysForObjectFromDbRow(DbRow $dbRow)
+	{
+		$table = $dbRow->_getDbTableName();
+		$dbRowData = $dbRow->_getDbRow();
+
+		return $this->_getPrimaryKeysFromObjectData($table, $dbRowData);
+	}
+
+	/**
+	 * Returns an array of primary keys for the given row.
+	 * The primary keys are extracted from the object columns.
+	 *
+	 * @param $table
+	 * @param array $columns
+	 *
+	 * @return array
+	 */
+	public function _getPrimaryKeysFromObjectData($table, array $columns)
+	{
+		$primaryKeyColumns = $this->getPrimaryKeyColumns($table);
+		$values = array();
+		foreach ($primaryKeyColumns as $column) {
+			if (isset($columns[$column])) {
+				$values[$column] = $columns[$column];
+			}
+		}
+
+		return $values;
+	}
+
+	/**
+	 * Attaches $object to this TDBMService.
+	 * The $object must be in DETACHED state and will pass in NEW state.
+	 *
+	 * @param AbstractTDBMObject $object
+	 *
+	 * @throws TDBMInvalidOperationException
+	 */
+	public function attach(AbstractTDBMObject $object)
+	{
+		$object->_attach($this);
+	}
+
+	/**
+	 * Returns an associative array (column => value) for the primary keys from the table name and an
+	 * indexed array of primary key values.
+	 *
+	 * @param string $tableName
+	 * @param array  $indexedPrimaryKeys
+	 */
+	public function _getPrimaryKeysFromIndexedPrimaryKeys($tableName, array $indexedPrimaryKeys)
+	{
+		$primaryKeyColumns = $this->tdbmSchemaAnalyzer->getSchema()->getTable($tableName)->getPrimaryKeyColumns();
+
+		if (count($primaryKeyColumns) !== count($indexedPrimaryKeys)) {
+			throw new TDBMException(sprintf('Wrong number of columns passed for primary key. Expected %s columns for table "%s",
 			got %s instead.', count($primaryKeyColumns), $tableName, count($indexedPrimaryKeys)));
-        }
-
-        return array_combine($primaryKeyColumns, $indexedPrimaryKeys);
-    }
-
-    /**
-     * Return the list of tables (from child to parent) joining the tables passed in parameter.
-     * Tables must be in a single line of inheritance. The method will find missing tables.
-     *
-     * Algorithm: one of those tables is the ultimate child. From this child, by recursively getting the parent,
-     * we must be able to find all other tables.
-     *
-     * @param string[] $tables
-     *
-     * @return string[]
-     */
-    public function _getLinkBetweenInheritedTables(array $tables)
-    {
-        sort($tables);
-
-        return $this->fromCache($this->cachePrefix.'_linkbetweeninheritedtables_'.implode('__split__', $tables),
-            function () use ($tables) {
-                return $this->_getLinkBetweenInheritedTablesWithoutCache($tables);
-            });
-    }
-
-    /**
-     * Return the list of tables (from child to parent) joining the tables passed in parameter.
-     * Tables must be in a single line of inheritance. The method will find missing tables.
-     *
-     * Algorithm: one of those tables is the ultimate child. From this child, by recursively getting the parent,
-     * we must be able to find all other tables.
-     *
-     * @param string[] $tables
-     *
-     * @return string[]
-     */
-    private function _getLinkBetweenInheritedTablesWithoutCache(array $tables)
-    {
-        $schemaAnalyzer = $this->schemaAnalyzer;
-
-        foreach ($tables as $currentTable) {
-            $allParents = [$currentTable];
-            while ($currentFk = $schemaAnalyzer->getParentRelationship($currentTable)) {
-                $currentTable = $currentFk->getForeignTableName();
-                $allParents[] = $currentTable;
-            }
-
-            // Now, does the $allParents contain all the tables we want?
-            $notFoundTables = array_diff($tables, $allParents);
-            if (empty($notFoundTables)) {
-                // We have a winner!
-                return $allParents;
-            }
-        }
-
-        throw new TDBMException(sprintf('The tables (%s) cannot be linked by an inheritance relationship.', implode(', ', $tables)));
-    }
-
-    /**
-     * Returns the list of tables related to this table (via a parent or child inheritance relationship).
-     *
-     * @param string $table
-     *
-     * @return string[]
-     */
-    public function _getRelatedTablesByInheritance($table)
-    {
-        return $this->fromCache($this->cachePrefix.'_relatedtables_'.$table, function () use ($table) {
-            return $this->_getRelatedTablesByInheritanceWithoutCache($table);
-        });
-    }
-
-    /**
-     * Returns the list of tables related to this table (via a parent or child inheritance relationship).
-     *
-     * @param string $table
-     *
-     * @return string[]
-     */
-    private function _getRelatedTablesByInheritanceWithoutCache($table)
-    {
-        $schemaAnalyzer = $this->schemaAnalyzer;
-
-        // Let's scan the parent tables
-        $currentTable = $table;
-
-        $parentTables = [];
-
-        // Get parent relationship
-        while ($currentFk = $schemaAnalyzer->getParentRelationship($currentTable)) {
-            $currentTable = $currentFk->getForeignTableName();
-            $parentTables[] = $currentTable;
-        }
-
-        // Let's recurse in children
-        $childrenTables = $this->exploreChildrenTablesRelationships($schemaAnalyzer, $table);
-
-        return array_merge(array_reverse($parentTables), $childrenTables);
-    }
-
-    /**
-     * Explore all the children and descendant of $table and returns ForeignKeyConstraints on those.
-     *
-     * @param string $table
-     *
-     * @return string[]
-     */
-    private function exploreChildrenTablesRelationships(SchemaAnalyzer $schemaAnalyzer, $table)
-    {
-        $tables = [$table];
-        $keys = $schemaAnalyzer->getChildrenRelationships($table);
-
-        foreach ($keys as $key) {
-            $tables = array_merge($tables, $this->exploreChildrenTablesRelationships($schemaAnalyzer, $key->getLocalTableName()));
-        }
-
-        return $tables;
-    }
-
-    /**
-     * @param string $tableName
-     *
-     * @return ForeignKeyConstraint[]
-     */
-    private function getParentRelationshipForeignKeys($tableName)
-    {
-        return $this->fromCache($this->cachePrefix.'_parentrelationshipfks_'.$tableName, function () use ($tableName) {
-            return $this->getParentRelationshipForeignKeysWithoutCache($tableName);
-        });
-    }
-
-    /**
-     * @param string $tableName
-     *
-     * @return ForeignKeyConstraint[]
-     */
-    private function getParentRelationshipForeignKeysWithoutCache($tableName)
-    {
-        $parentFks = [];
-        $currentTable = $tableName;
-        while ($currentFk = $this->schemaAnalyzer->getParentRelationship($currentTable)) {
-            $currentTable = $currentFk->getForeignTableName();
-            $parentFks[] = $currentFk;
-        }
-
-        return $parentFks;
-    }
-
-    /**
-     * @param string $tableName
-     *
-     * @return ForeignKeyConstraint[]
-     */
-    private function getChildrenRelationshipForeignKeys($tableName)
-    {
-        return $this->fromCache($this->cachePrefix.'_childrenrelationshipfks_'.$tableName, function () use ($tableName) {
-            return $this->getChildrenRelationshipForeignKeysWithoutCache($tableName);
-        });
-    }
-
-    /**
-     * @param string $tableName
-     *
-     * @return ForeignKeyConstraint[]
-     */
-    private function getChildrenRelationshipForeignKeysWithoutCache($tableName)
-    {
-        $children = $this->schemaAnalyzer->getChildrenRelationships($tableName);
-
-        if (!empty($children)) {
-            $fksTables = array_map(function (ForeignKeyConstraint $fk) {
-                return $this->getChildrenRelationshipForeignKeys($fk->getLocalTableName());
-            }, $children);
-
-            $fks = array_merge($children, call_user_func_array('array_merge', $fksTables));
-
-            return $fks;
-        } else {
-            return [];
-        }
-    }
-
-    /**
-     * Casts a foreign key into SQL, assuming table name is used with no alias.
-     * The returned value does contain only one table. For instance:.
-     *
-     * " LEFT JOIN table2 ON table1.id = table2.table1_id"
-     *
-     * @param ForeignKeyConstraint $fk
-     * @param bool                 $leftTableIsLocal
-     *
-     * @return string
-     */
-    /*private function foreignKeyToSql(ForeignKeyConstraint $fk, $leftTableIsLocal) {
+		}
+
+		return array_combine($primaryKeyColumns, $indexedPrimaryKeys);
+	}
+
+	/**
+	 * Return the list of tables (from child to parent) joining the tables passed in parameter.
+	 * Tables must be in a single line of inheritance. The method will find missing tables.
+	 *
+	 * Algorithm: one of those tables is the ultimate child. From this child, by recursively getting the parent,
+	 * we must be able to find all other tables.
+	 *
+	 * @param string[] $tables
+	 *
+	 * @return string[]
+	 */
+	public function _getLinkBetweenInheritedTables(array $tables)
+	{
+		sort($tables);
+
+		return $this->fromCache($this->cachePrefix.'_linkbetweeninheritedtables_'.implode('__split__', $tables),
+			function () use ($tables) {
+				return $this->_getLinkBetweenInheritedTablesWithoutCache($tables);
+			});
+	}
+
+	/**
+	 * Return the list of tables (from child to parent) joining the tables passed in parameter.
+	 * Tables must be in a single line of inheritance. The method will find missing tables.
+	 *
+	 * Algorithm: one of those tables is the ultimate child. From this child, by recursively getting the parent,
+	 * we must be able to find all other tables.
+	 *
+	 * @param string[] $tables
+	 *
+	 * @return string[]
+	 */
+	private function _getLinkBetweenInheritedTablesWithoutCache(array $tables)
+	{
+		$schemaAnalyzer = $this->schemaAnalyzer;
+
+		foreach ($tables as $currentTable) {
+			$allParents = [$currentTable];
+			while ($currentFk = $schemaAnalyzer->getParentRelationship($currentTable)) {
+				$currentTable = $currentFk->getForeignTableName();
+				$allParents[] = $currentTable;
+			}
+
+			// Now, does the $allParents contain all the tables we want?
+			$notFoundTables = array_diff($tables, $allParents);
+			if (empty($notFoundTables)) {
+				// We have a winner!
+				return $allParents;
+			}
+		}
+
+		throw new TDBMException(sprintf('The tables (%s) cannot be linked by an inheritance relationship.', implode(', ', $tables)));
+	}
+
+	/**
+	 * Returns the list of tables related to this table (via a parent or child inheritance relationship).
+	 *
+	 * @param string $table
+	 *
+	 * @return string[]
+	 */
+	public function _getRelatedTablesByInheritance($table)
+	{
+		return $this->fromCache($this->cachePrefix.'_relatedtables_'.$table, function () use ($table) {
+			return $this->_getRelatedTablesByInheritanceWithoutCache($table);
+		});
+	}
+
+	/**
+	 * Returns the list of tables related to this table (via a parent or child inheritance relationship).
+	 *
+	 * @param string $table
+	 *
+	 * @return string[]
+	 */
+	private function _getRelatedTablesByInheritanceWithoutCache($table)
+	{
+		$schemaAnalyzer = $this->schemaAnalyzer;
+
+		// Let's scan the parent tables
+		$currentTable = $table;
+
+		$parentTables = [];
+
+		// Get parent relationship
+		while ($currentFk = $schemaAnalyzer->getParentRelationship($currentTable)) {
+			$currentTable = $currentFk->getForeignTableName();
+			$parentTables[] = $currentTable;
+		}
+
+		// Let's recurse in children
+		$childrenTables = $this->exploreChildrenTablesRelationships($schemaAnalyzer, $table);
+
+		return array_merge(array_reverse($parentTables), $childrenTables);
+	}
+
+	/**
+	 * Explore all the children and descendant of $table and returns ForeignKeyConstraints on those.
+	 *
+	 * @param string $table
+	 *
+	 * @return string[]
+	 */
+	private function exploreChildrenTablesRelationships(SchemaAnalyzer $schemaAnalyzer, $table)
+	{
+		$tables = [$table];
+		$keys = $schemaAnalyzer->getChildrenRelationships($table);
+
+		foreach ($keys as $key) {
+			$tables = array_merge($tables, $this->exploreChildrenTablesRelationships($schemaAnalyzer, $key->getLocalTableName()));
+		}
+
+		return $tables;
+	}
+
+	/**
+	 * @param string $tableName
+	 *
+	 * @return ForeignKeyConstraint[]
+	 */
+	private function getParentRelationshipForeignKeys($tableName)
+	{
+		return $this->fromCache($this->cachePrefix.'_parentrelationshipfks_'.$tableName, function () use ($tableName) {
+			return $this->getParentRelationshipForeignKeysWithoutCache($tableName);
+		});
+	}
+
+	/**
+	 * @param string $tableName
+	 *
+	 * @return ForeignKeyConstraint[]
+	 */
+	private function getParentRelationshipForeignKeysWithoutCache($tableName)
+	{
+		$parentFks = [];
+		$currentTable = $tableName;
+		while ($currentFk = $this->schemaAnalyzer->getParentRelationship($currentTable)) {
+			$currentTable = $currentFk->getForeignTableName();
+			$parentFks[] = $currentFk;
+		}
+
+		return $parentFks;
+	}
+
+	/**
+	 * @param string $tableName
+	 *
+	 * @return ForeignKeyConstraint[]
+	 */
+	private function getChildrenRelationshipForeignKeys($tableName)
+	{
+		return $this->fromCache($this->cachePrefix.'_childrenrelationshipfks_'.$tableName, function () use ($tableName) {
+			return $this->getChildrenRelationshipForeignKeysWithoutCache($tableName);
+		});
+	}
+
+	/**
+	 * @param string $tableName
+	 *
+	 * @return ForeignKeyConstraint[]
+	 */
+	private function getChildrenRelationshipForeignKeysWithoutCache($tableName)
+	{
+		$children = $this->schemaAnalyzer->getChildrenRelationships($tableName);
+
+		if (!empty($children)) {
+			$fksTables = array_map(function (ForeignKeyConstraint $fk) {
+				return $this->getChildrenRelationshipForeignKeys($fk->getLocalTableName());
+			}, $children);
+
+			$fks = array_merge($children, call_user_func_array('array_merge', $fksTables));
+
+			return $fks;
+		} else {
+			return [];
+		}
+	}
+
+	/**
+	 * Casts a foreign key into SQL, assuming table name is used with no alias.
+	 * The returned value does contain only one table. For instance:.
+	 *
+	 * " LEFT JOIN table2 ON table1.id = table2.table1_id"
+	 *
+	 * @param ForeignKeyConstraint $fk
+	 * @param bool                 $leftTableIsLocal
+	 *
+	 * @return string
+	 */
+	/*private function foreignKeyToSql(ForeignKeyConstraint $fk, $leftTableIsLocal) {
         $onClauses = [];
         $foreignTableName = $this->connection->quoteIdentifier($fk->getForeignTableName());
         $foreignColumns = $fk->getForeignColumns();
@@ -1261,602 +1261,602 @@ 
         }
     }*/
 
-    /**
-     * Returns an identifier for the group of tables passed in parameter.
-     *
-     * @param string[] $relatedTables
-     *
-     * @return string
-     */
-    private function getTableGroupName(array $relatedTables)
-    {
-        sort($relatedTables);
-
-        return implode('_``_', $relatedTables);
-    }
-
-    /**
-     * Returns a `ResultIterator` object representing filtered records of "$mainTable" .
-     *
-     * The findObjects method should be the most used query method in TDBM if you want to query the database for objects.
-     * (Note: if you want to query the database for an object by its primary key, use the findObjectByPk method).
-     *
-     * The findObjects method takes in parameter:
-     * 	- mainTable: the kind of bean you want to retrieve. In TDBM, a bean matches a database row, so the
-     * 			`$mainTable` parameter should be the name of an existing table in database.
-     *  - filter: The filter is a filter bag. It is what you use to filter your request (the WHERE part in SQL).
-     *          It can be a string (SQL Where clause), or even a bean or an associative array (key = column to filter, value = value to find)
-     *  - parameters: The parameters used in the filter. If you pass a SQL string as a filter, be sure to avoid
-     *          concatenating parameters in the string (this leads to SQL injection and also to poor caching performance).
-     *          Instead, please consider passing parameters (see documentation for more details).
-     *  - additionalTablesFetch: An array of SQL tables names. The beans related to those tables will be fetched along
-     *          the main table. This is useful to avoid hitting the database with numerous subqueries.
-     *  - mode: The fetch mode of the result. See `setFetchMode()` method for more details.
-     *
-     * The `findObjects` method will return a `ResultIterator`. A `ResultIterator` is an object that behaves as an array
-     * (in ARRAY mode) at least. It can be iterated using a `foreach` loop.
-     *
-     * Finally, if filter_bag is null, the whole table is returned.
-     *
-     * @param string            $mainTable             The name of the table queried
-     * @param string|array|null $filter                The SQL filters to apply to the query (the WHERE part). All columns must be prefixed by the table name (in the form: table.column)
-     * @param array             $parameters
-     * @param string|null       $orderString           The ORDER BY part of the query. All columns must be prefixed by the table name (in the form: table.column)
-     * @param array             $additionalTablesFetch
-     * @param int               $mode
-     * @param string            $className             Optional: The name of the class to instantiate. This class must extend the TDBMObject class. If none is specified, a TDBMObject instance will be returned
-     *
-     * @return ResultIterator An object representing an array of results
-     *
-     * @throws TDBMException
-     */
-    public function findObjects($mainTable, $filter = null, array $parameters = array(), $orderString = null, array $additionalTablesFetch = array(), $mode = null, $className = null)
-    {
-        // $mainTable is not secured in MagicJoin, let's add a bit of security to avoid SQL injection.
-        if (!preg_match('/^[a-zA-Z_][a-zA-Z0-9_]*$/', $mainTable)) {
-            throw new TDBMException(sprintf("Invalid table name: '%s'", $mainTable));
-        }
-
-        list($filterString, $additionalParameters) = $this->buildFilterFromFilterBag($filter);
-
-        $parameters = array_merge($parameters, $additionalParameters);
-
-        list($columnDescList, $columnsList) = $this->getColumnsList($mainTable, $additionalTablesFetch, $orderString);
-
-        $sql = 'SELECT DISTINCT '.implode(', ', $columnsList).' FROM MAGICJOIN('.$mainTable.')';
-
-        $schema = $this->tdbmSchemaAnalyzer->getSchema();
-        $pkColumnNames = $schema->getTable($mainTable)->getPrimaryKeyColumns();
-        $pkColumnNames = array_map(function ($pkColumn) use ($mainTable) {
-            return $this->connection->quoteIdentifier($mainTable).'.'.$this->connection->quoteIdentifier($pkColumn);
-        }, $pkColumnNames);
-
-        $countSql = 'SELECT COUNT(DISTINCT '.implode(', ', $pkColumnNames).') FROM MAGICJOIN('.$mainTable.')';
-
-        if (!empty($filterString)) {
-            $sql .= ' WHERE '.$filterString;
-            $countSql .= ' WHERE '.$filterString;
-        }
-
-        if (!empty($orderString)) {
-            $sql .= ' ORDER BY '.$orderString;
-        }
-
-        if ($mode !== null && $mode !== self::MODE_CURSOR && $mode !== self::MODE_ARRAY) {
-            throw new TDBMException("Unknown fetch mode: '".$this->mode."'");
-        }
-
-        $mode = $mode ?: $this->mode;
-
-        return new ResultIterator($sql, $countSql, $parameters, $columnDescList, $this->objectStorage, $className, $this, $this->magicQuery, $mode, $this->logger);
-    }
-
-    /**
-     * @param string            $mainTable   The name of the table queried
-     * @param string            $from        The from sql statement
-     * @param string|array|null $filter      The SQL filters to apply to the query (the WHERE part). All columns must be prefixed by the table name (in the form: table.column)
-     * @param array             $parameters
-     * @param string|null       $orderString The ORDER BY part of the query. All columns must be prefixed by the table name (in the form: table.column)
-     * @param int               $mode
-     * @param string            $className   Optional: The name of the class to instantiate. This class must extend the TDBMObject class. If none is specified, a TDBMObject instance will be returned
-     *
-     * @return ResultIterator An object representing an array of results
-     *
-     * @throws TDBMException
-     */
-    public function findObjectsFromSql(string $mainTable, string $from, $filter = null, array $parameters = array(), string $orderString = null, $mode = null, string $className = null)
-    {
-        // $mainTable is not secured in MagicJoin, let's add a bit of security to avoid SQL injection.
-        if (!preg_match('/^[a-zA-Z_][a-zA-Z0-9_]*$/', $mainTable)) {
-            throw new TDBMException(sprintf("Invalid table name: '%s'", $mainTable));
-        }
-
-        $columnsList = null;
-
-        list($filterString, $additionalParameters) = $this->buildFilterFromFilterBag($filter);
-
-        $parameters = array_merge($parameters, $additionalParameters);
-
-        $allFetchedTables = $this->_getRelatedTablesByInheritance($mainTable);
-
-        $columnDescList = [];
-        $schema = $this->tdbmSchemaAnalyzer->getSchema();
-        $tableGroupName = $this->getTableGroupName($allFetchedTables);
-
-        foreach ($schema->getTable($mainTable)->getColumns() as $column) {
-            $columnName = $column->getName();
-            $columnDescList[] = [
-                'as' => $columnName,
-                'table' => $mainTable,
-                'column' => $columnName,
-                'type' => $column->getType(),
-                'tableGroup' => $tableGroupName,
-            ];
-        }
-
-        $sql = 'SELECT DISTINCT '.implode(', ', array_map(function ($columnDesc) use ($mainTable) {
-            return $this->connection->quoteIdentifier($mainTable).'.'.$this->connection->quoteIdentifier($columnDesc['column']);
-        }, $columnDescList)).' FROM '.$from;
-
-        if (count($allFetchedTables) > 1) {
-            list($columnDescList, $columnsList) = $this->getColumnsList($mainTable, [], $orderString);
-        }
-
-        // Let's compute the COUNT.
-        $pkColumnNames = $schema->getTable($mainTable)->getPrimaryKeyColumns();
-        $pkColumnNames = array_map(function ($pkColumn) use ($mainTable) {
-            return $this->connection->quoteIdentifier($mainTable).'.'.$this->connection->quoteIdentifier($pkColumn);
-        }, $pkColumnNames);
-
-        $countSql = 'SELECT COUNT(DISTINCT '.implode(', ', $pkColumnNames).') FROM '.$from;
-
-        if (!empty($filterString)) {
-            $sql .= ' WHERE '.$filterString;
-            $countSql .= ' WHERE '.$filterString;
-        }
-
-        if (!empty($orderString)) {
-            $sql .= ' ORDER BY '.$orderString;
-            $countSql .= ' ORDER BY '.$orderString;
-        }
-
-        if (stripos($countSql, 'GROUP BY') !== false) {
-            throw new TDBMException('Unsupported use of GROUP BY in SQL request.');
-        }
-
-        if ($mode !== null && $mode !== self::MODE_CURSOR && $mode !== self::MODE_ARRAY) {
-            throw new TDBMException("Unknown fetch mode: '".$mode."'");
-        }
-
-        if ($columnsList !== null) {
-            $joinSql = '';
-            $parentFks = $this->getParentRelationshipForeignKeys($mainTable);
-            foreach ($parentFks as $fk) {
-                $joinSql .= sprintf(' JOIN %s ON (%s.%s = %s.%s)',
-                    $this->connection->quoteIdentifier($fk->getForeignTableName()),
-                    $this->connection->quoteIdentifier($fk->getLocalTableName()),
-                    $this->connection->quoteIdentifier($fk->getLocalColumns()[0]),
-                    $this->connection->quoteIdentifier($fk->getForeignTableName()),
-                    $this->connection->quoteIdentifier($fk->getForeignColumns()[0])
-                    );
-            }
-
-            $childrenFks = $this->getChildrenRelationshipForeignKeys($mainTable);
-            foreach ($childrenFks as $fk) {
-                $joinSql .= sprintf(' LEFT JOIN %s ON (%s.%s = %s.%s)',
-                    $this->connection->quoteIdentifier($fk->getLocalTableName()),
-                    $this->connection->quoteIdentifier($fk->getForeignTableName()),
-                    $this->connection->quoteIdentifier($fk->getForeignColumns()[0]),
-                    $this->connection->quoteIdentifier($fk->getLocalTableName()),
-                    $this->connection->quoteIdentifier($fk->getLocalColumns()[0])
-                );
-            }
-
-            $sql = 'SELECT '.implode(', ', $columnsList).' FROM ('.$sql.') AS '.$mainTable.' '.$joinSql;
-        }
-
-        $mode = $mode ?: $this->mode;
-
-        return new ResultIterator($sql, $countSql, $parameters, $columnDescList, $this->objectStorage, $className, $this, $this->magicQuery, $mode, $this->logger);
-    }
-
-    /**
-     * Returns the column list that must be fetched for the SQL request.
-     *
-     * Note: MySQL dictates that ORDER BYed columns should appear in the SELECT clause.
-     *
-     * @param string      $mainTable
-     * @param array       $additionalTablesFetch
-     * @param string|null $orderBy
-     *
-     * @return array
-     *
-     * @throws \Doctrine\DBAL\Schema\SchemaException
-     */
-    private function getColumnsList(string $mainTable, array $additionalTablesFetch = array(), string $orderBy = null)
-    {
-        // From the table name and the additional tables we want to fetch, let's build a list of all tables
-        // that must be part of the select columns.
-
-        $tableGroups = [];
-        $allFetchedTables = $this->_getRelatedTablesByInheritance($mainTable);
-        $tableGroupName = $this->getTableGroupName($allFetchedTables);
-        foreach ($allFetchedTables as $table) {
-            $tableGroups[$table] = $tableGroupName;
-        }
-
-        $columnsList = [];
-        $columnDescList = [];
-        $sortColumn = 0;
-
-        // Now, let's deal with "order by columns"
-        if ($orderBy !== null) {
-            $orderByColumns = $this->orderByAnalyzer->analyzeOrderBy($orderBy);
-
-            // If we sort by a column, there is a high chance we will fetch the bean containing this column.
-            // Hence, we should add the table to the $additionalTablesFetch
-            foreach ($orderByColumns as $orderByColumn) {
-                if ($orderByColumn['type'] === 'colref' && $orderByColumn['table'] !== null) {
-                    $additionalTablesFetch[] = $orderByColumn['table'];
-                } elseif ($orderByColumn['type'] === 'expr') {
-                    $sortColumnName = 'sort_column_'.$sortColumn;
-                    $columnsList[] = $orderByColumn['expr'].' as '.$sortColumnName;
-                    $columnDescList[] = [
-                        'tableGroup' => null,
-                    ];
-                    ++$sortColumn;
-                }
-            }
-        }
-
-        foreach ($additionalTablesFetch as $additionalTable) {
-            $relatedTables = $this->_getRelatedTablesByInheritance($additionalTable);
-            $tableGroupName = $this->getTableGroupName($relatedTables);
-            foreach ($relatedTables as $table) {
-                $tableGroups[$table] = $tableGroupName;
-            }
-            $allFetchedTables = array_merge($allFetchedTables, $relatedTables);
-        }
-
-        // Let's remove any duplicate
-        $allFetchedTables = array_flip(array_flip($allFetchedTables));
-
-        $schema = $this->tdbmSchemaAnalyzer->getSchema();
-
-        // Now, let's build the column list
-        foreach ($allFetchedTables as $table) {
-            foreach ($schema->getTable($table)->getColumns() as $column) {
-                $columnName = $column->getName();
-                $columnDescList[] = [
-                    'as' => $table.'____'.$columnName,
-                    'table' => $table,
-                    'column' => $columnName,
-                    'type' => $column->getType(),
-                    'tableGroup' => $tableGroups[$table],
-                ];
-                $columnsList[] = $this->connection->quoteIdentifier($table).'.'.$this->connection->quoteIdentifier($columnName).' as '.
-                    $this->connection->quoteIdentifier($table.'____'.$columnName);
-            }
-        }
-
-        return [$columnDescList, $columnsList];
-    }
-
-    /**
-     * @param $table
-     * @param array  $primaryKeys
-     * @param array  $additionalTablesFetch
-     * @param bool   $lazy                  Whether to perform lazy loading on this object or not
-     * @param string $className
-     *
-     * @return AbstractTDBMObject
-     *
-     * @throws TDBMException
-     */
-    public function findObjectByPk(string $table, array $primaryKeys, array $additionalTablesFetch = array(), bool $lazy = false, string $className = null)
-    {
-        $primaryKeys = $this->_getPrimaryKeysFromObjectData($table, $primaryKeys);
-        $hash = $this->getObjectHash($primaryKeys);
-
-        if ($this->objectStorage->has($table, $hash)) {
-            $dbRow = $this->objectStorage->get($table, $hash);
-            $bean = $dbRow->getTDBMObject();
-            if ($className !== null && !is_a($bean, $className)) {
-                throw new TDBMException("TDBM cannot create a bean of class '".$className."'. The requested object was already loaded and its class is '".get_class($bean)."'");
-            }
-
-            return $bean;
-        }
-
-        // Are we performing lazy fetching?
-        if ($lazy === true) {
-            // Can we perform lazy fetching?
-            $tables = $this->_getRelatedTablesByInheritance($table);
-            // Only allowed if no inheritance.
-            if (count($tables) === 1) {
-                if ($className === null) {
-                    $className = isset($this->tableToBeanMap[$table]) ? $this->tableToBeanMap[$table] : 'Mouf\\Database\\TDBM\\TDBMObject';
-                }
-
-                // Let's construct the bean
-                if (!isset($this->reflectionClassCache[$className])) {
-                    $this->reflectionClassCache[$className] = new \ReflectionClass($className);
-                }
-                // Let's bypass the constructor when creating the bean!
-                $bean = $this->reflectionClassCache[$className]->newInstanceWithoutConstructor();
-                /* @var $bean AbstractTDBMObject */
-                $bean->_constructLazy($table, $primaryKeys, $this);
-
-                return $bean;
-            }
-        }
-
-        // Did not find the object in cache? Let's query it!
-        return $this->findObjectOrFail($table, $primaryKeys, [], $additionalTablesFetch, $className);
-    }
-
-    /**
-     * Returns a unique bean (or null) according to the filters passed in parameter.
-     *
-     * @param string            $mainTable             The name of the table queried
-     * @param string|array|null $filter                The SQL filters to apply to the query (the WHERE part). All columns must be prefixed by the table name (in the form: table.column)
-     * @param array             $parameters
-     * @param array             $additionalTablesFetch
-     * @param string            $className             Optional: The name of the class to instantiate. This class must extend the TDBMObject class. If none is specified, a TDBMObject instance will be returned
-     *
-     * @return AbstractTDBMObject|null The object we want, or null if no object matches the filters
-     *
-     * @throws TDBMException
-     */
-    public function findObject(string $mainTable, $filter = null, array $parameters = array(), array $additionalTablesFetch = array(), string $className = null)
-    {
-        $objects = $this->findObjects($mainTable, $filter, $parameters, null, $additionalTablesFetch, self::MODE_ARRAY, $className);
-        $page = $objects->take(0, 2);
-        $count = $page->count();
-        if ($count > 1) {
-            throw new DuplicateRowException("Error while querying an object for table '$mainTable': More than 1 row have been returned, but we should have received at most one.");
-        } elseif ($count === 0) {
-            return;
-        }
-
-        return $page[0];
-    }
-
-    /**
-     * Returns a unique bean (or null) according to the filters passed in parameter.
-     *
-     * @param string            $mainTable  The name of the table queried
-     * @param string            $from       The from sql statement
-     * @param string|array|null $filter     The SQL filters to apply to the query (the WHERE part). All columns must be prefixed by the table name (in the form: table.column)
-     * @param array             $parameters
-     * @param string            $className  Optional: The name of the class to instantiate. This class must extend the TDBMObject class. If none is specified, a TDBMObject instance will be returned
-     *
-     * @return AbstractTDBMObject|null The object we want, or null if no object matches the filters
-     *
-     * @throws TDBMException
-     */
-    public function findObjectFromSql($mainTable, $from, $filter = null, array $parameters = array(), $className = null)
-    {
-        $objects = $this->findObjectsFromSql($mainTable, $from, $filter, $parameters, null, self::MODE_ARRAY, $className);
-        $page = $objects->take(0, 2);
-        $count = $page->count();
-        if ($count > 1) {
-            throw new DuplicateRowException("Error while querying an object for table '$mainTable': More than 1 row have been returned, but we should have received at most one.");
-        } elseif ($count === 0) {
-            return;
-        }
-
-        return $page[0];
-    }
-
-    /**
-     * Returns a unique bean according to the filters passed in parameter.
-     * Throws a NoBeanFoundException if no bean was found for the filter passed in parameter.
-     *
-     * @param string            $mainTable             The name of the table queried
-     * @param string|array|null $filter                The SQL filters to apply to the query (the WHERE part). All columns must be prefixed by the table name (in the form: table.column)
-     * @param array             $parameters
-     * @param array             $additionalTablesFetch
-     * @param string            $className             Optional: The name of the class to instantiate. This class must extend the TDBMObject class. If none is specified, a TDBMObject instance will be returned
-     *
-     * @return AbstractTDBMObject The object we want
-     *
-     * @throws TDBMException
-     */
-    public function findObjectOrFail(string $mainTable, $filter = null, array $parameters = array(), array $additionalTablesFetch = array(), string $className = null)
-    {
-        $bean = $this->findObject($mainTable, $filter, $parameters, $additionalTablesFetch, $className);
-        if ($bean === null) {
-            throw new NoBeanFoundException("No result found for query on table '".$mainTable."'");
-        }
-
-        return $bean;
-    }
-
-    /**
-     * @param array $beanData An array of data: array<table, array<column, value>>
-     *
-     * @return array an array with first item = class name, second item = table name and third item = list of tables needed
-     */
-    public function _getClassNameFromBeanData(array $beanData)
-    {
-        if (count($beanData) === 1) {
-            $tableName = array_keys($beanData)[0];
-            $allTables = [$tableName];
-        } else {
-            $tables = [];
-            foreach ($beanData as $table => $row) {
-                $primaryKeyColumns = $this->getPrimaryKeyColumns($table);
-                $pkSet = false;
-                foreach ($primaryKeyColumns as $columnName) {
-                    if ($row[$columnName] !== null) {
-                        $pkSet = true;
-                        break;
-                    }
-                }
-                if ($pkSet) {
-                    $tables[] = $table;
-                }
-            }
-
-            // $tables contains the tables for this bean. Let's view the top most part of the hierarchy
-            $allTables = $this->_getLinkBetweenInheritedTables($tables);
-            $tableName = $allTables[0];
-        }
-
-        // Only one table in this bean. Life is sweat, let's look at its type:
-        if (isset($this->tableToBeanMap[$tableName])) {
-            return [$this->tableToBeanMap[$tableName], $tableName, $allTables];
-        } else {
-            return ['Mouf\\Database\\TDBM\\TDBMObject', $tableName, $allTables];
-        }
-    }
-
-    /**
-     * Returns an item from cache or computes it using $closure and puts it in cache.
-     *
-     * @param string   $key
-     * @param callable $closure
-     *
-     * @return mixed
-     */
-    private function fromCache(string $key, callable $closure)
-    {
-        $item = $this->cache->fetch($key);
-        if ($item === false) {
-            $item = $closure();
-            $this->cache->save($key, $item);
-        }
-
-        return $item;
-    }
-
-    /**
-     * Returns the foreign key object.
-     *
-     * @param string $table
-     * @param string $fkName
-     *
-     * @return ForeignKeyConstraint
-     */
-    public function _getForeignKeyByName(string $table, string $fkName)
-    {
-        return $this->tdbmSchemaAnalyzer->getSchema()->getTable($table)->getForeignKey($fkName);
-    }
-
-    /**
-     * @param $pivotTableName
-     * @param AbstractTDBMObject $bean
-     *
-     * @return AbstractTDBMObject[]
-     */
-    public function _getRelatedBeans(string $pivotTableName, AbstractTDBMObject $bean)
-    {
-        list($localFk, $remoteFk) = $this->getPivotTableForeignKeys($pivotTableName, $bean);
-        /* @var $localFk ForeignKeyConstraint */
-        /* @var $remoteFk ForeignKeyConstraint */
-        $remoteTable = $remoteFk->getForeignTableName();
-
-        $primaryKeys = $this->getPrimaryKeyValues($bean);
-        $columnNames = array_map(function ($name) use ($pivotTableName) {
-            return $pivotTableName.'.'.$name;
-        }, $localFk->getLocalColumns());
-
-        $filter = array_combine($columnNames, $primaryKeys);
-
-        return $this->findObjects($remoteTable, $filter);
-    }
-
-    /**
-     * @param $pivotTableName
-     * @param AbstractTDBMObject $bean The LOCAL bean
-     *
-     * @return ForeignKeyConstraint[] First item: the LOCAL bean, second item: the REMOTE bean
-     *
-     * @throws TDBMException
-     */
-    private function getPivotTableForeignKeys(string $pivotTableName, AbstractTDBMObject $bean)
-    {
-        $fks = array_values($this->tdbmSchemaAnalyzer->getSchema()->getTable($pivotTableName)->getForeignKeys());
-        $table1 = $fks[0]->getForeignTableName();
-        $table2 = $fks[1]->getForeignTableName();
-
-        $beanTables = array_map(function (DbRow $dbRow) {
-            return $dbRow->_getDbTableName();
-        }, $bean->_getDbRows());
-
-        if (in_array($table1, $beanTables)) {
-            return [$fks[0], $fks[1]];
-        } elseif (in_array($table2, $beanTables)) {
-            return [$fks[1], $fks[0]];
-        } else {
-            throw new TDBMException("Unexpected bean type in getPivotTableForeignKeys. Awaiting beans from table {$table1} and {$table2} for pivot table {$pivotTableName}");
-        }
-    }
-
-    /**
-     * Returns a list of pivot tables linked to $bean.
-     *
-     * @param AbstractTDBMObject $bean
-     *
-     * @return string[]
-     */
-    public function _getPivotTablesLinkedToBean(AbstractTDBMObject $bean)
-    {
-        $junctionTables = [];
-        $allJunctionTables = $this->schemaAnalyzer->detectJunctionTables(true);
-        foreach ($bean->_getDbRows() as $dbRow) {
-            foreach ($allJunctionTables as $table) {
-                // There are exactly 2 FKs since this is a pivot table.
-                $fks = array_values($table->getForeignKeys());
-
-                if ($fks[0]->getForeignTableName() === $dbRow->_getDbTableName() || $fks[1]->getForeignTableName() === $dbRow->_getDbTableName()) {
-                    $junctionTables[] = $table->getName();
-                }
-            }
-        }
-
-        return $junctionTables;
-    }
-
-    /**
-     * Array of types for tables.
-     * Key: table name
-     * Value: array of types indexed by column.
-     *
-     * @var array[]
-     */
-    private $typesForTable = [];
-
-    /**
-     * @internal
-     *
-     * @param string $tableName
-     *
-     * @return Type[]
-     */
-    public function _getColumnTypesForTable(string $tableName)
-    {
-        if (!isset($typesForTable[$tableName])) {
-            $columns = $this->tdbmSchemaAnalyzer->getSchema()->getTable($tableName)->getColumns();
-            $typesForTable[$tableName] = array_map(function (Column $column) {
-                return $column->getType();
-            }, $columns);
-        }
-
-        return $typesForTable[$tableName];
-    }
-
-    /**
-     * Sets the minimum log level.
-     * $level must be one of Psr\Log\LogLevel::xxx.
-     *
-     * Defaults to LogLevel::WARNING
-     *
-     * @param string $level
-     */
-    public function setLogLevel(string $level)
-    {
-        $this->logger = new MinLogLevelFilter($this->rootLogger, $level);
-    }
+	/**
+	 * Returns an identifier for the group of tables passed in parameter.
+	 *
+	 * @param string[] $relatedTables
+	 *
+	 * @return string
+	 */
+	private function getTableGroupName(array $relatedTables)
+	{
+		sort($relatedTables);
+
+		return implode('_``_', $relatedTables);
+	}
+
+	/**
+	 * Returns a `ResultIterator` object representing filtered records of "$mainTable" .
+	 *
+	 * The findObjects method should be the most used query method in TDBM if you want to query the database for objects.
+	 * (Note: if you want to query the database for an object by its primary key, use the findObjectByPk method).
+	 *
+	 * The findObjects method takes in parameter:
+	 * 	- mainTable: the kind of bean you want to retrieve. In TDBM, a bean matches a database row, so the
+	 * 			`$mainTable` parameter should be the name of an existing table in database.
+	 *  - filter: The filter is a filter bag. It is what you use to filter your request (the WHERE part in SQL).
+	 *          It can be a string (SQL Where clause), or even a bean or an associative array (key = column to filter, value = value to find)
+	 *  - parameters: The parameters used in the filter. If you pass a SQL string as a filter, be sure to avoid
+	 *          concatenating parameters in the string (this leads to SQL injection and also to poor caching performance).
+	 *          Instead, please consider passing parameters (see documentation for more details).
+	 *  - additionalTablesFetch: An array of SQL tables names. The beans related to those tables will be fetched along
+	 *          the main table. This is useful to avoid hitting the database with numerous subqueries.
+	 *  - mode: The fetch mode of the result. See `setFetchMode()` method for more details.
+	 *
+	 * The `findObjects` method will return a `ResultIterator`. A `ResultIterator` is an object that behaves as an array
+	 * (in ARRAY mode) at least. It can be iterated using a `foreach` loop.
+	 *
+	 * Finally, if filter_bag is null, the whole table is returned.
+	 *
+	 * @param string            $mainTable             The name of the table queried
+	 * @param string|array|null $filter                The SQL filters to apply to the query (the WHERE part). All columns must be prefixed by the table name (in the form: table.column)
+	 * @param array             $parameters
+	 * @param string|null       $orderString           The ORDER BY part of the query. All columns must be prefixed by the table name (in the form: table.column)
+	 * @param array             $additionalTablesFetch
+	 * @param int               $mode
+	 * @param string            $className             Optional: The name of the class to instantiate. This class must extend the TDBMObject class. If none is specified, a TDBMObject instance will be returned
+	 *
+	 * @return ResultIterator An object representing an array of results
+	 *
+	 * @throws TDBMException
+	 */
+	public function findObjects($mainTable, $filter = null, array $parameters = array(), $orderString = null, array $additionalTablesFetch = array(), $mode = null, $className = null)
+	{
+		// $mainTable is not secured in MagicJoin, let's add a bit of security to avoid SQL injection.
+		if (!preg_match('/^[a-zA-Z_][a-zA-Z0-9_]*$/', $mainTable)) {
+			throw new TDBMException(sprintf("Invalid table name: '%s'", $mainTable));
+		}
+
+		list($filterString, $additionalParameters) = $this->buildFilterFromFilterBag($filter);
+
+		$parameters = array_merge($parameters, $additionalParameters);
+
+		list($columnDescList, $columnsList) = $this->getColumnsList($mainTable, $additionalTablesFetch, $orderString);
+
+		$sql = 'SELECT DISTINCT '.implode(', ', $columnsList).' FROM MAGICJOIN('.$mainTable.')';
+
+		$schema = $this->tdbmSchemaAnalyzer->getSchema();
+		$pkColumnNames = $schema->getTable($mainTable)->getPrimaryKeyColumns();
+		$pkColumnNames = array_map(function ($pkColumn) use ($mainTable) {
+			return $this->connection->quoteIdentifier($mainTable).'.'.$this->connection->quoteIdentifier($pkColumn);
+		}, $pkColumnNames);
+
+		$countSql = 'SELECT COUNT(DISTINCT '.implode(', ', $pkColumnNames).') FROM MAGICJOIN('.$mainTable.')';
+
+		if (!empty($filterString)) {
+			$sql .= ' WHERE '.$filterString;
+			$countSql .= ' WHERE '.$filterString;
+		}
+
+		if (!empty($orderString)) {
+			$sql .= ' ORDER BY '.$orderString;
+		}
+
+		if ($mode !== null && $mode !== self::MODE_CURSOR && $mode !== self::MODE_ARRAY) {
+			throw new TDBMException("Unknown fetch mode: '".$this->mode."'");
+		}
+
+		$mode = $mode ?: $this->mode;
+
+		return new ResultIterator($sql, $countSql, $parameters, $columnDescList, $this->objectStorage, $className, $this, $this->magicQuery, $mode, $this->logger);
+	}
+
+	/**
+	 * @param string            $mainTable   The name of the table queried
+	 * @param string            $from        The from sql statement
+	 * @param string|array|null $filter      The SQL filters to apply to the query (the WHERE part). All columns must be prefixed by the table name (in the form: table.column)
+	 * @param array             $parameters
+	 * @param string|null       $orderString The ORDER BY part of the query. All columns must be prefixed by the table name (in the form: table.column)
+	 * @param int               $mode
+	 * @param string            $className   Optional: The name of the class to instantiate. This class must extend the TDBMObject class. If none is specified, a TDBMObject instance will be returned
+	 *
+	 * @return ResultIterator An object representing an array of results
+	 *
+	 * @throws TDBMException
+	 */
+	public function findObjectsFromSql(string $mainTable, string $from, $filter = null, array $parameters = array(), string $orderString = null, $mode = null, string $className = null)
+	{
+		// $mainTable is not secured in MagicJoin, let's add a bit of security to avoid SQL injection.
+		if (!preg_match('/^[a-zA-Z_][a-zA-Z0-9_]*$/', $mainTable)) {
+			throw new TDBMException(sprintf("Invalid table name: '%s'", $mainTable));
+		}
+
+		$columnsList = null;
+
+		list($filterString, $additionalParameters) = $this->buildFilterFromFilterBag($filter);
+
+		$parameters = array_merge($parameters, $additionalParameters);
+
+		$allFetchedTables = $this->_getRelatedTablesByInheritance($mainTable);
+
+		$columnDescList = [];
+		$schema = $this->tdbmSchemaAnalyzer->getSchema();
+		$tableGroupName = $this->getTableGroupName($allFetchedTables);
+
+		foreach ($schema->getTable($mainTable)->getColumns() as $column) {
+			$columnName = $column->getName();
+			$columnDescList[] = [
+				'as' => $columnName,
+				'table' => $mainTable,
+				'column' => $columnName,
+				'type' => $column->getType(),
+				'tableGroup' => $tableGroupName,
+			];
+		}
+
+		$sql = 'SELECT DISTINCT '.implode(', ', array_map(function ($columnDesc) use ($mainTable) {
+			return $this->connection->quoteIdentifier($mainTable).'.'.$this->connection->quoteIdentifier($columnDesc['column']);
+		}, $columnDescList)).' FROM '.$from;
+
+		if (count($allFetchedTables) > 1) {
+			list($columnDescList, $columnsList) = $this->getColumnsList($mainTable, [], $orderString);
+		}
+
+		// Let's compute the COUNT.
+		$pkColumnNames = $schema->getTable($mainTable)->getPrimaryKeyColumns();
+		$pkColumnNames = array_map(function ($pkColumn) use ($mainTable) {
+			return $this->connection->quoteIdentifier($mainTable).'.'.$this->connection->quoteIdentifier($pkColumn);
+		}, $pkColumnNames);
+
+		$countSql = 'SELECT COUNT(DISTINCT '.implode(', ', $pkColumnNames).') FROM '.$from;
+
+		if (!empty($filterString)) {
+			$sql .= ' WHERE '.$filterString;
+			$countSql .= ' WHERE '.$filterString;
+		}
+
+		if (!empty($orderString)) {
+			$sql .= ' ORDER BY '.$orderString;
+			$countSql .= ' ORDER BY '.$orderString;
+		}
+
+		if (stripos($countSql, 'GROUP BY') !== false) {
+			throw new TDBMException('Unsupported use of GROUP BY in SQL request.');
+		}
+
+		if ($mode !== null && $mode !== self::MODE_CURSOR && $mode !== self::MODE_ARRAY) {
+			throw new TDBMException("Unknown fetch mode: '".$mode."'");
+		}
+
+		if ($columnsList !== null) {
+			$joinSql = '';
+			$parentFks = $this->getParentRelationshipForeignKeys($mainTable);
+			foreach ($parentFks as $fk) {
+				$joinSql .= sprintf(' JOIN %s ON (%s.%s = %s.%s)',
+					$this->connection->quoteIdentifier($fk->getForeignTableName()),
+					$this->connection->quoteIdentifier($fk->getLocalTableName()),
+					$this->connection->quoteIdentifier($fk->getLocalColumns()[0]),
+					$this->connection->quoteIdentifier($fk->getForeignTableName()),
+					$this->connection->quoteIdentifier($fk->getForeignColumns()[0])
+					);
+			}
+
+			$childrenFks = $this->getChildrenRelationshipForeignKeys($mainTable);
+			foreach ($childrenFks as $fk) {
+				$joinSql .= sprintf(' LEFT JOIN %s ON (%s.%s = %s.%s)',
+					$this->connection->quoteIdentifier($fk->getLocalTableName()),
+					$this->connection->quoteIdentifier($fk->getForeignTableName()),
+					$this->connection->quoteIdentifier($fk->getForeignColumns()[0]),
+					$this->connection->quoteIdentifier($fk->getLocalTableName()),
+					$this->connection->quoteIdentifier($fk->getLocalColumns()[0])
+				);
+			}
+
+			$sql = 'SELECT '.implode(', ', $columnsList).' FROM ('.$sql.') AS '.$mainTable.' '.$joinSql;
+		}
+
+		$mode = $mode ?: $this->mode;
+
+		return new ResultIterator($sql, $countSql, $parameters, $columnDescList, $this->objectStorage, $className, $this, $this->magicQuery, $mode, $this->logger);
+	}
+
+	/**
+	 * Returns the column list that must be fetched for the SQL request.
+	 *
+	 * Note: MySQL dictates that ORDER BYed columns should appear in the SELECT clause.
+	 *
+	 * @param string      $mainTable
+	 * @param array       $additionalTablesFetch
+	 * @param string|null $orderBy
+	 *
+	 * @return array
+	 *
+	 * @throws \Doctrine\DBAL\Schema\SchemaException
+	 */
+	private function getColumnsList(string $mainTable, array $additionalTablesFetch = array(), string $orderBy = null)
+	{
+		// From the table name and the additional tables we want to fetch, let's build a list of all tables
+		// that must be part of the select columns.
+
+		$tableGroups = [];
+		$allFetchedTables = $this->_getRelatedTablesByInheritance($mainTable);
+		$tableGroupName = $this->getTableGroupName($allFetchedTables);
+		foreach ($allFetchedTables as $table) {
+			$tableGroups[$table] = $tableGroupName;
+		}
+
+		$columnsList = [];
+		$columnDescList = [];
+		$sortColumn = 0;
+
+		// Now, let's deal with "order by columns"
+		if ($orderBy !== null) {
+			$orderByColumns = $this->orderByAnalyzer->analyzeOrderBy($orderBy);
+
+			// If we sort by a column, there is a high chance we will fetch the bean containing this column.
+			// Hence, we should add the table to the $additionalTablesFetch
+			foreach ($orderByColumns as $orderByColumn) {
+				if ($orderByColumn['type'] === 'colref' && $orderByColumn['table'] !== null) {
+					$additionalTablesFetch[] = $orderByColumn['table'];
+				} elseif ($orderByColumn['type'] === 'expr') {
+					$sortColumnName = 'sort_column_'.$sortColumn;
+					$columnsList[] = $orderByColumn['expr'].' as '.$sortColumnName;
+					$columnDescList[] = [
+						'tableGroup' => null,
+					];
+					++$sortColumn;
+				}
+			}
+		}
+
+		foreach ($additionalTablesFetch as $additionalTable) {
+			$relatedTables = $this->_getRelatedTablesByInheritance($additionalTable);
+			$tableGroupName = $this->getTableGroupName($relatedTables);
+			foreach ($relatedTables as $table) {
+				$tableGroups[$table] = $tableGroupName;
+			}
+			$allFetchedTables = array_merge($allFetchedTables, $relatedTables);
+		}
+
+		// Let's remove any duplicate
+		$allFetchedTables = array_flip(array_flip($allFetchedTables));
+
+		$schema = $this->tdbmSchemaAnalyzer->getSchema();
+
+		// Now, let's build the column list
+		foreach ($allFetchedTables as $table) {
+			foreach ($schema->getTable($table)->getColumns() as $column) {
+				$columnName = $column->getName();
+				$columnDescList[] = [
+					'as' => $table.'____'.$columnName,
+					'table' => $table,
+					'column' => $columnName,
+					'type' => $column->getType(),
+					'tableGroup' => $tableGroups[$table],
+				];
+				$columnsList[] = $this->connection->quoteIdentifier($table).'.'.$this->connection->quoteIdentifier($columnName).' as '.
+					$this->connection->quoteIdentifier($table.'____'.$columnName);
+			}
+		}
+
+		return [$columnDescList, $columnsList];
+	}
+
+	/**
+	 * @param $table
+	 * @param array  $primaryKeys
+	 * @param array  $additionalTablesFetch
+	 * @param bool   $lazy                  Whether to perform lazy loading on this object or not
+	 * @param string $className
+	 *
+	 * @return AbstractTDBMObject
+	 *
+	 * @throws TDBMException
+	 */
+	public function findObjectByPk(string $table, array $primaryKeys, array $additionalTablesFetch = array(), bool $lazy = false, string $className = null)
+	{
+		$primaryKeys = $this->_getPrimaryKeysFromObjectData($table, $primaryKeys);
+		$hash = $this->getObjectHash($primaryKeys);
+
+		if ($this->objectStorage->has($table, $hash)) {
+			$dbRow = $this->objectStorage->get($table, $hash);
+			$bean = $dbRow->getTDBMObject();
+			if ($className !== null && !is_a($bean, $className)) {
+				throw new TDBMException("TDBM cannot create a bean of class '".$className."'. The requested object was already loaded and its class is '".get_class($bean)."'");
+			}
+
+			return $bean;
+		}
+
+		// Are we performing lazy fetching?
+		if ($lazy === true) {
+			// Can we perform lazy fetching?
+			$tables = $this->_getRelatedTablesByInheritance($table);
+			// Only allowed if no inheritance.
+			if (count($tables) === 1) {
+				if ($className === null) {
+					$className = isset($this->tableToBeanMap[$table]) ? $this->tableToBeanMap[$table] : 'Mouf\\Database\\TDBM\\TDBMObject';
+				}
+
+				// Let's construct the bean
+				if (!isset($this->reflectionClassCache[$className])) {
+					$this->reflectionClassCache[$className] = new \ReflectionClass($className);
+				}
+				// Let's bypass the constructor when creating the bean!
+				$bean = $this->reflectionClassCache[$className]->newInstanceWithoutConstructor();
+				/* @var $bean AbstractTDBMObject */
+				$bean->_constructLazy($table, $primaryKeys, $this);
+
+				return $bean;
+			}
+		}
+
+		// Did not find the object in cache? Let's query it!
+		return $this->findObjectOrFail($table, $primaryKeys, [], $additionalTablesFetch, $className);
+	}
+
+	/**
+	 * Returns a unique bean (or null) according to the filters passed in parameter.
+	 *
+	 * @param string            $mainTable             The name of the table queried
+	 * @param string|array|null $filter                The SQL filters to apply to the query (the WHERE part). All columns must be prefixed by the table name (in the form: table.column)
+	 * @param array             $parameters
+	 * @param array             $additionalTablesFetch
+	 * @param string            $className             Optional: The name of the class to instantiate. This class must extend the TDBMObject class. If none is specified, a TDBMObject instance will be returned
+	 *
+	 * @return AbstractTDBMObject|null The object we want, or null if no object matches the filters
+	 *
+	 * @throws TDBMException
+	 */
+	public function findObject(string $mainTable, $filter = null, array $parameters = array(), array $additionalTablesFetch = array(), string $className = null)
+	{
+		$objects = $this->findObjects($mainTable, $filter, $parameters, null, $additionalTablesFetch, self::MODE_ARRAY, $className);
+		$page = $objects->take(0, 2);
+		$count = $page->count();
+		if ($count > 1) {
+			throw new DuplicateRowException("Error while querying an object for table '$mainTable': More than 1 row have been returned, but we should have received at most one.");
+		} elseif ($count === 0) {
+			return;
+		}
+
+		return $page[0];
+	}
+
+	/**
+	 * Returns a unique bean (or null) according to the filters passed in parameter.
+	 *
+	 * @param string            $mainTable  The name of the table queried
+	 * @param string            $from       The from sql statement
+	 * @param string|array|null $filter     The SQL filters to apply to the query (the WHERE part). All columns must be prefixed by the table name (in the form: table.column)
+	 * @param array             $parameters
+	 * @param string            $className  Optional: The name of the class to instantiate. This class must extend the TDBMObject class. If none is specified, a TDBMObject instance will be returned
+	 *
+	 * @return AbstractTDBMObject|null The object we want, or null if no object matches the filters
+	 *
+	 * @throws TDBMException
+	 */
+	public function findObjectFromSql($mainTable, $from, $filter = null, array $parameters = array(), $className = null)
+	{
+		$objects = $this->findObjectsFromSql($mainTable, $from, $filter, $parameters, null, self::MODE_ARRAY, $className);
+		$page = $objects->take(0, 2);
+		$count = $page->count();
+		if ($count > 1) {
+			throw new DuplicateRowException("Error while querying an object for table '$mainTable': More than 1 row have been returned, but we should have received at most one.");
+		} elseif ($count === 0) {
+			return;
+		}
+
+		return $page[0];
+	}
+
+	/**
+	 * Returns a unique bean according to the filters passed in parameter.
+	 * Throws a NoBeanFoundException if no bean was found for the filter passed in parameter.
+	 *
+	 * @param string            $mainTable             The name of the table queried
+	 * @param string|array|null $filter                The SQL filters to apply to the query (the WHERE part). All columns must be prefixed by the table name (in the form: table.column)
+	 * @param array             $parameters
+	 * @param array             $additionalTablesFetch
+	 * @param string            $className             Optional: The name of the class to instantiate. This class must extend the TDBMObject class. If none is specified, a TDBMObject instance will be returned
+	 *
+	 * @return AbstractTDBMObject The object we want
+	 *
+	 * @throws TDBMException
+	 */
+	public function findObjectOrFail(string $mainTable, $filter = null, array $parameters = array(), array $additionalTablesFetch = array(), string $className = null)
+	{
+		$bean = $this->findObject($mainTable, $filter, $parameters, $additionalTablesFetch, $className);
+		if ($bean === null) {
+			throw new NoBeanFoundException("No result found for query on table '".$mainTable."'");
+		}
+
+		return $bean;
+	}
+
+	/**
+	 * @param array $beanData An array of data: array<table, array<column, value>>
+	 *
+	 * @return array an array with first item = class name, second item = table name and third item = list of tables needed
+	 */
+	public function _getClassNameFromBeanData(array $beanData)
+	{
+		if (count($beanData) === 1) {
+			$tableName = array_keys($beanData)[0];
+			$allTables = [$tableName];
+		} else {
+			$tables = [];
+			foreach ($beanData as $table => $row) {
+				$primaryKeyColumns = $this->getPrimaryKeyColumns($table);
+				$pkSet = false;
+				foreach ($primaryKeyColumns as $columnName) {
+					if ($row[$columnName] !== null) {
+						$pkSet = true;
+						break;
+					}
+				}
+				if ($pkSet) {
+					$tables[] = $table;
+				}
+			}
+
+			// $tables contains the tables for this bean. Let's view the top most part of the hierarchy
+			$allTables = $this->_getLinkBetweenInheritedTables($tables);
+			$tableName = $allTables[0];
+		}
+
+		// Only one table in this bean. Life is sweat, let's look at its type:
+		if (isset($this->tableToBeanMap[$tableName])) {
+			return [$this->tableToBeanMap[$tableName], $tableName, $allTables];
+		} else {
+			return ['Mouf\\Database\\TDBM\\TDBMObject', $tableName, $allTables];
+		}
+	}
+
+	/**
+	 * Returns an item from cache or computes it using $closure and puts it in cache.
+	 *
+	 * @param string   $key
+	 * @param callable $closure
+	 *
+	 * @return mixed
+	 */
+	private function fromCache(string $key, callable $closure)
+	{
+		$item = $this->cache->fetch($key);
+		if ($item === false) {
+			$item = $closure();
+			$this->cache->save($key, $item);
+		}
+
+		return $item;
+	}
+
+	/**
+	 * Returns the foreign key object.
+	 *
+	 * @param string $table
+	 * @param string $fkName
+	 *
+	 * @return ForeignKeyConstraint
+	 */
+	public function _getForeignKeyByName(string $table, string $fkName)
+	{
+		return $this->tdbmSchemaAnalyzer->getSchema()->getTable($table)->getForeignKey($fkName);
+	}
+
+	/**
+	 * @param $pivotTableName
+	 * @param AbstractTDBMObject $bean
+	 *
+	 * @return AbstractTDBMObject[]
+	 */
+	public function _getRelatedBeans(string $pivotTableName, AbstractTDBMObject $bean)
+	{
+		list($localFk, $remoteFk) = $this->getPivotTableForeignKeys($pivotTableName, $bean);
+		/* @var $localFk ForeignKeyConstraint */
+		/* @var $remoteFk ForeignKeyConstraint */
+		$remoteTable = $remoteFk->getForeignTableName();
+
+		$primaryKeys = $this->getPrimaryKeyValues($bean);
+		$columnNames = array_map(function ($name) use ($pivotTableName) {
+			return $pivotTableName.'.'.$name;
+		}, $localFk->getLocalColumns());
+
+		$filter = array_combine($columnNames, $primaryKeys);
+
+		return $this->findObjects($remoteTable, $filter);
+	}
+
+	/**
+	 * @param $pivotTableName
+	 * @param AbstractTDBMObject $bean The LOCAL bean
+	 *
+	 * @return ForeignKeyConstraint[] First item: the LOCAL bean, second item: the REMOTE bean
+	 *
+	 * @throws TDBMException
+	 */
+	private function getPivotTableForeignKeys(string $pivotTableName, AbstractTDBMObject $bean)
+	{
+		$fks = array_values($this->tdbmSchemaAnalyzer->getSchema()->getTable($pivotTableName)->getForeignKeys());
+		$table1 = $fks[0]->getForeignTableName();
+		$table2 = $fks[1]->getForeignTableName();
+
+		$beanTables = array_map(function (DbRow $dbRow) {
+			return $dbRow->_getDbTableName();
+		}, $bean->_getDbRows());
+
+		if (in_array($table1, $beanTables)) {
+			return [$fks[0], $fks[1]];
+		} elseif (in_array($table2, $beanTables)) {
+			return [$fks[1], $fks[0]];
+		} else {
+			throw new TDBMException("Unexpected bean type in getPivotTableForeignKeys. Awaiting beans from table {$table1} and {$table2} for pivot table {$pivotTableName}");
+		}
+	}
+
+	/**
+	 * Returns a list of pivot tables linked to $bean.
+	 *
+	 * @param AbstractTDBMObject $bean
+	 *
+	 * @return string[]
+	 */
+	public function _getPivotTablesLinkedToBean(AbstractTDBMObject $bean)
+	{
+		$junctionTables = [];
+		$allJunctionTables = $this->schemaAnalyzer->detectJunctionTables(true);
+		foreach ($bean->_getDbRows() as $dbRow) {
+			foreach ($allJunctionTables as $table) {
+				// There are exactly 2 FKs since this is a pivot table.
+				$fks = array_values($table->getForeignKeys());
+
+				if ($fks[0]->getForeignTableName() === $dbRow->_getDbTableName() || $fks[1]->getForeignTableName() === $dbRow->_getDbTableName()) {
+					$junctionTables[] = $table->getName();
+				}
+			}
+		}
+
+		return $junctionTables;
+	}
+
+	/**
+	 * Array of types for tables.
+	 * Key: table name
+	 * Value: array of types indexed by column.
+	 *
+	 * @var array[]
+	 */
+	private $typesForTable = [];
+
+	/**
+	 * @internal
+	 *
+	 * @param string $tableName
+	 *
+	 * @return Type[]
+	 */
+	public function _getColumnTypesForTable(string $tableName)
+	{
+		if (!isset($typesForTable[$tableName])) {
+			$columns = $this->tdbmSchemaAnalyzer->getSchema()->getTable($tableName)->getColumns();
+			$typesForTable[$tableName] = array_map(function (Column $column) {
+				return $column->getType();
+			}, $columns);
+		}
+
+		return $typesForTable[$tableName];
+	}
+
+	/**
+	 * Sets the minimum log level.
+	 * $level must be one of Psr\Log\LogLevel::xxx.
+	 *
+	 * Defaults to LogLevel::WARNING
+	 *
+	 * @param string $level
+	 */
+	public function setLogLevel(string $level)
+	{
+		$this->logger = new MinLogLevelFilter($this->rootLogger, $level);
+	}
 }