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<?php |
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/** |
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* Class Entity |
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* |
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* @property int|float $dbId Buddy record DB ID |
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*/ |
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class Entity implements \Common\IMagicProperties { |
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/** |
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* Name of table for this entity |
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* |
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* @var string $tableName |
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*/ |
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protected static $tableName = '_table'; |
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/** |
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* Name of key field field in this table |
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* |
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* @var string $idField |
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*/ |
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protected static $idField = 'id'; |
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/** |
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* Container for property values |
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* |
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* @var PropertyHider $_container |
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*/ |
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protected $_container; |
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protected static $_containerName = 'PropertyHiderInArray'; |
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/** |
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* Property list and description |
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* |
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* propertyName => array( |
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* P_DB_FIELD => 'dbFieldName', - directly converts property to field and vice versa |
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* P_DB_ROW_IMPORT => function ($that, &$row) - Imports DB field value from dbRow to object's property |
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* P_DB_ROW_EXPORT => function ($that, &$row) - Exports object's property to DB field |
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* ) |
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* |
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* @var array[] |
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*/ |
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protected static $_properties = array(); |
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/** |
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* @var array |
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*/ |
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protected static $_propertyToField = array(); |
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protected static $_propertyImportExportIsBind = false; |
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/** |
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* Link to DB which used by this Entity |
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* |
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* @var db_mysql $dbStatic |
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* deprecated - replace with container ID like 'db' or 'dbAuth' |
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*/ |
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public static $dbStatic; |
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/** |
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* Service to work with rows |
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* |
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* @var \DbRowDirectOperator $rowOperator |
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*/ |
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protected static $rowOperator; |
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protected function bindFieldExport(&$propertyData, $propertyName) { |
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if(!empty($propertyData[P_DB_ROW_EXPORT])) { |
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return; |
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} |
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// Last resort - binding export function to DB field name |
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if (!empty($propertyData[P_DB_FIELD])) { |
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// Property is mapped 1-to-1 to field |
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/** |
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* @param static $that |
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*/ |
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// Alas! No bindTo() method in 5.3 closures! So we should use what we have |
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// Also no auto bound of $this until 5.4 |
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$propertyData[P_DB_ROW_EXPORT] = function ($that, &$row) use ($propertyName, $propertyData) { |
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$row[$propertyData[P_DB_FIELD]] = $that->$propertyName; |
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}; |
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} |
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} |
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protected function bindFieldImport(&$propertyData, $propertyName) { |
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if(!empty($propertyData[P_DB_ROW_IMPORT])) { |
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return; |
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} |
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// Last resort - binding import function to DB field name |
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if (!empty($propertyData[P_DB_FIELD])) { |
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// Property is mapped 1-to-1 to field |
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/** |
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* @param static $that |
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*/ |
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// Alas! No bindTo() method in 5.3 closures! So we should use what we have |
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// Also no auto bound of $this until 5.4 |
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$propertyData[P_DB_ROW_IMPORT] = function ($that, &$row) use ($propertyName, $propertyData) { |
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$that->$propertyName = \Common\Types::castAs( |
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!empty($propertyData[P_DB_TYPE]) ? $propertyData[P_DB_TYPE] : TYPE_EMPTY, |
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$row[$propertyData[P_DB_FIELD]] |
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); |
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}; |
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} |
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} |
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/** |
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* Fills property-to-field table which used to generate result array |
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*/ |
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protected function fillPropertyToField() { |
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if (static::$_propertyImportExportIsBind) { |
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return; |
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} |
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// Filling property-to-field relation array |
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foreach (static::$_properties as $propertyName => &$propertyData) { |
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$this->bindFieldExport($propertyData, $propertyName); |
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$this->bindFieldImport($propertyData, $propertyName); |
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} |
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static::$_propertyImportExportIsBind = true; |
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} |
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/** |
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* Entity constructor. |
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* |
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* @param \Common\GlobalContainer $gc |
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*/ |
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public function __construct($gc) { |
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empty(static::$dbStatic) && !empty($gc->db) ? static::$dbStatic = $gc->db : false; |
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static::$rowOperator = $gc->dbRowOperator; |
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$this->_container = new static::$_containerName(); |
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$this->_container->setProperties(static::$_properties); |
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$this->fillPropertyToField(); |
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} |
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/** |
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* Invoke row transformation operation on object |
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* |
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* Uses in to save/load data from DB row into/from object |
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* |
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* @param array $row |
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* @param string $operation |
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* @param string $desc |
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* |
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* @throws Exception |
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*/ |
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protected function rowInvokeOperation(&$row, $operation, $desc) { |
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foreach (static::$_properties as $propertyName => $propertyData) { |
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if (is_callable($propertyData[$operation])) { |
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// Some black magic here |
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// Closure is a class - so have __invoke() magic method |
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// It means we can invoke it by directly call __invoke() |
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$propertyData[$operation]->__invoke($this, $row); |
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// TODO - however for a sake of uniformity may be we should consider use call_user_func |
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// call_user_func($propertyData[P_DB_ROW_EXPORT], $this, $row); |
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} else { |
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throw new \Exception('There is no valid DB [' . $operation . '] row operation for ' . get_called_class() . '::' . $propertyName); |
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} |
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} |
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} |
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/** |
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* Import DB row state into object properties |
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* |
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* @param array $row |
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*/ |
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public function importDbRow($row) { |
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$this->rowInvokeOperation($row, P_DB_ROW_IMPORT, 'IMPORTER'); |
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} |
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const ENTITY_DB_ID_INCLUDE = true; |
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const ENTITY_DB_ID_EXCLUDE = true; |
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/** |
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* Export data from object properties into DB row for further use |
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* |
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* @param bool $withDbId - Should dbId too be returned. Useful for INSERT statements |
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* |
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* @return array |
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*/ |
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protected function exportDbRow($withDbId = self::ENTITY_DB_ID_INCLUDE) { |
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$row = array(); |
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$this->rowInvokeOperation($row, P_DB_ROW_EXPORT, 'EXPORTER'); |
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if ($withDbId == self::ENTITY_DB_ID_EXCLUDE) { |
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unset($row[$this->getIdFieldName()]); |
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} |
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return $row; |
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} |
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/** |
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* @return array |
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*/ |
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public function exportRowWithoutId() { |
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return $this->exportDbRow(self::ENTITY_DB_ID_EXCLUDE); |
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} |
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/** |
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* @return array |
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*/ |
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public function exportRowWithId() { |
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return $this->exportDbRow(self::ENTITY_DB_ID_INCLUDE); |
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} |
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public function getTableName() { |
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return static::$tableName; |
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} |
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public function getIdFieldName() { |
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return static::$idField; |
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} |
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public function isContainerEmpty() { |
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return $this->_container->isContainerEmpty(); |
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} |
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public function isNew() { |
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return empty($this->dbId); |
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} |
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/** |
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* @return db_mysql |
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*/ |
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public function getDbStatic() { |
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return static::$dbStatic; |
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} |
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public function __get($name) { |
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return $this->_container->$name; |
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} |
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public function __set($name, $value) { |
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$this->_container->$name = $value; |
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} |
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public function __isset($name) { |
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return isset($this->_container->$name); |
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} |
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public function __unset($name) { |
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unset($this->_container->$name); |
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} |
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} |
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Our type inference engine has found a suspicous assignment of a value to a property. This check raises an issue when a value that can be of a mixed type is assigned to a property that is type hinted more strictly.
For example, imagine you have a variable
$accountIdthat can either hold an Id object or false (if there is no account id yet). Your code now assigns that value to theidproperty of an instance of theAccountclass. This class holds a proper account, so the id value must no longer be false.Either this assignment is in error or a type check should be added for that assignment.