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<?php |
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namespace TheCodingMachine\TDBM; |
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/* |
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Copyright (C) 2006-2017 David Négrier - THE CODING MACHINE |
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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/** |
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* Instances of this class represent a row in a database. |
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* |
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* @author David Negrier |
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*/ |
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class DbRow |
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{ |
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/** |
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* The service this object is bound to. |
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* |
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* @var TDBMService |
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*/ |
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protected $tdbmService; |
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/** |
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* The object containing this db row. |
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* |
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* @var AbstractTDBMObject |
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*/ |
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private $object; |
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/** |
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* The name of the table the object if issued from. |
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* |
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* @var string |
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*/ |
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private $dbTableName; |
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/** |
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* The array of columns returned from database. |
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* |
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* @var array |
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*/ |
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private $dbRow = array(); |
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/** |
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* @var AbstractTDBMObject[] |
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*/ |
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private $references = array(); |
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/** |
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* One of TDBMObjectStateEnum::STATE_NEW, TDBMObjectStateEnum::STATE_NOT_LOADED, TDBMObjectStateEnum::STATE_LOADED, TDBMObjectStateEnum::STATE_DELETED. |
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* $status = TDBMObjectStateEnum::STATE_NEW when a new object is created with DBMObject:getNewObject. |
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* $status = TDBMObjectStateEnum::STATE_NOT_LOADED when the object has been retrieved with getObject but when no data has been accessed in it yet. |
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* $status = TDBMObjectStateEnum::STATE_LOADED when the object is cached in memory. |
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* |
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* @var string |
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*/ |
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private $status; |
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/** |
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* The values of the primary key. |
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* This is set when the object is in "loaded" state. |
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* |
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* @var array An array of column => value |
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*/ |
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private $primaryKeys; |
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/** |
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* You should never call the constructor directly. Instead, you should use the |
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* TDBMService class that will create TDBMObjects for you. |
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* |
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* Used with id!=false when we want to retrieve an existing object |
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* and id==false if we want a new object |
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* |
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* @param AbstractTDBMObject $object The object containing this db row |
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* @param string $table_name |
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* @param array $primaryKeys |
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* @param TDBMService $tdbmService |
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* |
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* @throws TDBMException |
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* @throws TDBMInvalidOperationException |
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*/ |
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public function __construct(AbstractTDBMObject $object, $table_name, array $primaryKeys = array(), TDBMService $tdbmService = null, array $dbRow = array()) |
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{ |
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$this->object = $object; |
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$this->dbTableName = $table_name; |
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$this->status = TDBMObjectStateEnum::STATE_DETACHED; |
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if ($tdbmService === null) { |
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if (!empty($primaryKeys)) { |
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throw new TDBMException('You cannot pass an id to the DbRow constructor without passing also a TDBMService.'); |
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} |
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} else { |
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$this->tdbmService = $tdbmService; |
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if (!empty($primaryKeys)) { |
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$this->_setPrimaryKeys($primaryKeys); |
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if (!empty($dbRow)) { |
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$this->dbRow = $dbRow; |
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$this->status = TDBMObjectStateEnum::STATE_LOADED; |
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} else { |
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$this->status = TDBMObjectStateEnum::STATE_NOT_LOADED; |
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} |
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$tdbmService->_addToCache($this); |
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} else { |
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$this->status = TDBMObjectStateEnum::STATE_NEW; |
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$this->tdbmService->_addToToSaveObjectList($this); |
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} |
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} |
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} |
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public function _attach(TDBMService $tdbmService) |
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{ |
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if ($this->status !== TDBMObjectStateEnum::STATE_DETACHED) { |
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throw new TDBMInvalidOperationException('Cannot attach an object that is already attached to TDBM.'); |
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} |
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$this->tdbmService = $tdbmService; |
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$this->status = TDBMObjectStateEnum::STATE_NEW; |
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$this->tdbmService->_addToToSaveObjectList($this); |
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} |
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/** |
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* Sets the state of the TDBM Object |
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* One of TDBMObjectStateEnum::STATE_NEW, TDBMObjectStateEnum::STATE_NOT_LOADED, TDBMObjectStateEnum::STATE_LOADED, TDBMObjectStateEnum::STATE_DELETED. |
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* $status = TDBMObjectStateEnum::STATE_NEW when a new object is created with DBMObject:getNewObject. |
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* $status = TDBMObjectStateEnum::STATE_NOT_LOADED when the object has been retrieved with getObject but when no data has been accessed in it yet. |
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* $status = TDBMObjectStateEnum::STATE_LOADED when the object is cached in memory. |
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* |
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* @param string $state |
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*/ |
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public function _setStatus($state) |
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{ |
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$this->status = $state; |
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} |
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/** |
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* This is an internal method. You should not call this method yourself. The TDBM library will do it for you. |
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* If the object is in state 'not loaded', this method performs a query in database to load the object. |
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* |
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* A TDBMException is thrown is no object can be retrieved (for instance, if the primary key specified |
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* cannot be found). |
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*/ |
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public function _dbLoadIfNotLoaded() |
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{ |
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if ($this->status == TDBMObjectStateEnum::STATE_NOT_LOADED) { |
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$connection = $this->tdbmService->getConnection(); |
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list($sql_where, $parameters) = $this->tdbmService->buildFilterFromFilterBag($this->primaryKeys, $connection->getDatabasePlatform()); |
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$sql = 'SELECT * FROM '.$connection->quoteIdentifier($this->dbTableName).' WHERE '.$sql_where; |
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$result = $connection->executeQuery($sql, $parameters); |
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$row = $result->fetch(\PDO::FETCH_ASSOC); |
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if ($row === false) { |
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throw new TDBMException("Could not retrieve object from table \"$this->dbTableName\" using filter \".$sql_where.\" with data \"".var_export($parameters, true)."\"."); |
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} |
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$this->dbRow = []; |
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$types = $this->tdbmService->_getColumnTypesForTable($this->dbTableName); |
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foreach ($row as $key => $value) { |
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$this->dbRow[$key] = $types[$key]->convertToPHPValue($value, $connection->getDatabasePlatform()); |
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} |
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$result->closeCursor(); |
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$this->status = TDBMObjectStateEnum::STATE_LOADED; |
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} |
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} |
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public function get($var) |
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{ |
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$this->_dbLoadIfNotLoaded(); |
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return $this->dbRow[$var] ?? null; |
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} |
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/** |
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* Returns true if a column is set, false otherwise. |
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* |
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* @param string $var |
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* |
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* @return bool |
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*/ |
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/*public function has($var) { |
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$this->_dbLoadIfNotLoaded(); |
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return isset($this->dbRow[$var]); |
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}*/ |
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View Code Duplication |
public function set($var, $value) |
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{ |
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$this->_dbLoadIfNotLoaded(); |
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/* |
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// Ok, let's start by checking the column type |
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$type = $this->db_connection->getColumnType($this->dbTableName, $var); |
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// Throws an exception if the type is not ok. |
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if (!$this->db_connection->checkType($value, $type)) { |
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throw new TDBMException("Error! Invalid value passed for attribute '$var' of table '$this->dbTableName'. Passed '$value', but expecting '$type'"); |
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} |
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*/ |
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/*if ($var == $this->getPrimaryKey() && isset($this->dbRow[$var])) |
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throw new TDBMException("Error! Changing primary key value is forbidden.");*/ |
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$this->dbRow[$var] = $value; |
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if ($this->tdbmService !== null && $this->status === TDBMObjectStateEnum::STATE_LOADED) { |
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$this->status = TDBMObjectStateEnum::STATE_DIRTY; |
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$this->tdbmService->_addToToSaveObjectList($this); |
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} |
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} |
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/** |
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* @param string $foreignKeyName |
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* @param AbstractTDBMObject $bean |
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*/ |
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View Code Duplication |
public function setRef($foreignKeyName, AbstractTDBMObject $bean = null) |
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{ |
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$this->references[$foreignKeyName] = $bean; |
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if ($this->tdbmService !== null && $this->status === TDBMObjectStateEnum::STATE_LOADED) { |
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$this->status = TDBMObjectStateEnum::STATE_DIRTY; |
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$this->tdbmService->_addToToSaveObjectList($this); |
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} |
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} |
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/** |
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* @param string $foreignKeyName A unique name for this reference |
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* |
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* @return AbstractTDBMObject|null |
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*/ |
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public function getRef($foreignKeyName) |
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{ |
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if (array_key_exists($foreignKeyName, $this->references)) { |
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return $this->references[$foreignKeyName]; |
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} elseif ($this->status === TDBMObjectStateEnum::STATE_NEW || $this->tdbmService === null) { |
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// If the object is new and has no property, then it has to be empty. |
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return; |
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} else { |
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$this->_dbLoadIfNotLoaded(); |
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// Let's match the name of the columns to the primary key values |
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$fk = $this->tdbmService->_getForeignKeyByName($this->dbTableName, $foreignKeyName); |
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$values = []; |
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foreach ($fk->getUnquotedLocalColumns() as $column) { |
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if (!isset($this->dbRow[$column])) { |
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return; |
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} |
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$values[] = $this->dbRow[$column]; |
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} |
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$filter = array_combine($fk->getUnquotedForeignColumns(), $values); |
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// If the foreign key points to the primary key, let's use findObjectByPk |
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if ($this->tdbmService->getPrimaryKeyColumns($fk->getForeignTableName()) === $fk->getUnquotedForeignColumns()) { |
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return $this->tdbmService->findObjectByPk($fk->getForeignTableName(), $filter, [], true); |
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} else { |
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return $this->tdbmService->findObject($fk->getForeignTableName(), $filter); |
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} |
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} |
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} |
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/** |
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* Returns the name of the table this object comes from. |
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* |
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* @return string |
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*/ |
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public function _getDbTableName() |
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{ |
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return $this->dbTableName; |
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} |
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/** |
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* Method used internally by TDBM. You should not use it directly. |
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* This method returns the status of the TDBMObject. |
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* This is one of TDBMObjectStateEnum::STATE_NEW, TDBMObjectStateEnum::STATE_NOT_LOADED, TDBMObjectStateEnum::STATE_LOADED, TDBMObjectStateEnum::STATE_DELETED. |
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* $status = TDBMObjectStateEnum::STATE_NEW when a new object is created with DBMObject:getNewObject. |
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* $status = TDBMObjectStateEnum::STATE_NOT_LOADED when the object has been retrieved with getObject but when no data has been accessed in it yet. |
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* $status = TDBMObjectStateEnum::STATE_LOADED when the object is cached in memory. |
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* |
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* @return string |
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*/ |
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public function _getStatus() |
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{ |
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return $this->status; |
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} |
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/** |
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* Override the native php clone function for TDBMObjects. |
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*/ |
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public function __clone() |
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{ |
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// Let's load the row (before we lose the ID!) |
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$this->_dbLoadIfNotLoaded(); |
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//Let's set the status to detached |
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$this->status = TDBMObjectStateEnum::STATE_DETACHED; |
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$this->primaryKeys = []; |
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//Now unset the PK from the row |
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if ($this->tdbmService) { |
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$pk_array = $this->tdbmService->getPrimaryKeyColumns($this->dbTableName); |
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foreach ($pk_array as $pk) { |
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unset($this->dbRow[$pk]); |
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} |
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} |
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} |
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/** |
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* Returns raw database row. |
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* |
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* @return array |
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* |
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* @throws TDBMMissingReferenceException |
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*/ |
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public function _getDbRow() |
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{ |
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// Let's merge $dbRow and $references |
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$dbRow = $this->dbRow; |
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foreach ($this->references as $foreignKeyName => $reference) { |
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// Let's match the name of the columns to the primary key values |
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$fk = $this->tdbmService->_getForeignKeyByName($this->dbTableName, $foreignKeyName); |
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$localColumns = $fk->getUnquotedLocalColumns(); |
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if ($reference !== null) { |
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$refDbRows = $reference->_getDbRows(); |
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$firstRefDbRow = reset($refDbRows); |
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if ($firstRefDbRow->_getStatus() == TDBMObjectStateEnum::STATE_DELETED) { |
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throw TDBMMissingReferenceException::referenceDeleted($this->dbTableName, $reference); |
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} |
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$pkValues = array_values($firstRefDbRow->_getPrimaryKeys()); |
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View Code Duplication |
for ($i = 0, $count = count($localColumns); $i < $count; ++$i) { |
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352
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$dbRow[$localColumns[$i]] = $pkValues[$i]; |
353
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} |
354
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} else { |
355
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View Code Duplication |
for ($i = 0, $count = count($localColumns); $i < $count; ++$i) { |
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356
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$dbRow[$localColumns[$i]] = null; |
357
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} |
358
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} |
359
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} |
360
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361
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return $dbRow; |
362
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} |
363
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364
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/** |
365
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* Returns references array. |
366
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* |
367
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* @return AbstractTDBMObject[] |
368
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*/ |
369
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public function _getReferences() |
370
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{ |
371
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return $this->references; |
372
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} |
373
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374
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/** |
375
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* Returns the values of the primary key. |
376
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* This is set when the object is in "loaded" state. |
377
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* |
378
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* @return array |
379
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*/ |
380
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public function _getPrimaryKeys() |
381
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{ |
382
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return $this->primaryKeys; |
383
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} |
384
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385
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/** |
386
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* Sets the values of the primary key. |
387
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* This is set when the object is in "loaded" state. |
388
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* |
389
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* @param array $primaryKeys |
390
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*/ |
391
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public function _setPrimaryKeys(array $primaryKeys) |
392
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{ |
393
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$this->primaryKeys = $primaryKeys; |
394
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foreach ($this->primaryKeys as $column => $value) { |
395
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$this->dbRow[$column] = $value; |
396
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} |
397
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} |
398
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399
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/** |
400
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* Returns the TDBMObject this bean is associated to. |
401
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* |
402
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* @return AbstractTDBMObject |
403
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*/ |
404
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public function getTDBMObject() |
405
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{ |
406
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return $this->object; |
407
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} |
408
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409
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/** |
410
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* Sets the TDBMObject this bean is associated to. |
411
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* Only used when cloning. |
412
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* |
413
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* @param AbstractTDBMObject $object |
414
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*/ |
415
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public function setTDBMObject(AbstractTDBMObject $object) |
416
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{ |
417
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$this->object = $object; |
418
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} |
419
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} |
420
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Instead of embedding dynamic parameters in SQL, Doctrine also allows you to pass them separately and insert a placeholder instead: