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244 lines
8.3 KiB
PHP
244 lines
8.3 KiB
PHP
<?php
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/*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software consists of voluntary contributions made by many individuals
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* and is licensed under the MIT license. For more information, see
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* <http://www.doctrine-project.org>.
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*/
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namespace Doctrine\Common\Persistence;
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use Doctrine\Common\Persistence\Mapping\ClassMetadata;
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use Doctrine\Common\Collections\ArrayCollection;
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use Doctrine\Common\Collections\Collection;
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/**
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* PersistentObject base class that implements getter/setter methods for all mapped fields and associations
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* by overriding __call.
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*
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* This class is a forward compatible implementation of the PersistentObject trait.
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*
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*
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* Limitations:
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*
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* 1. All persistent objects have to be associated with a single ObjectManager, multiple
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* ObjectManagers are not supported. You can set the ObjectManager with `PersistentObject#setObjectManager()`.
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* 2. Setters and getters only work if a ClassMetadata instance was injected into the PersistentObject.
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* This is either done on `postLoad` of an object or by accessing the global object manager.
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* 3. There are no hooks for setters/getters. Just implement the method yourself instead of relying on __call().
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* 4. Slower than handcoded implementations: An average of 7 method calls per access to a field and 11 for an association.
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* 5. Only the inverse side associations get autoset on the owning side aswell. Setting objects on the owning side
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* will not set the inverse side associations.
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*
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* @example
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*
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* PersistentObject::setObjectManager($em);
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*
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* class Foo extends PersistentObject
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* {
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* private $id;
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* }
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*
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* $foo = new Foo();
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* $foo->getId(); // method exists through __call
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*
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* @author Benjamin Eberlei <kontakt@beberlei.de>
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*/
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abstract class PersistentObject implements ObjectManagerAware
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{
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/**
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* @var ObjectManager
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*/
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private static $objectManager;
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/**
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* @var ClassMetadata
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*/
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private $cm;
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/**
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* Set the object manager responsible for all persistent object base classes.
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*
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* @param ObjectManager $objectManager
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*/
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static public function setObjectManager(ObjectManager $objectManager = null)
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{
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self::$objectManager = $objectManager;
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}
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/**
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* @return ObjectManager
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*/
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static public function getObjectManager()
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{
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return self::$objectManager;
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}
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/**
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* Inject Doctrine Object Manager
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*
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* @param ObjectManager $objectManager
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* @param ClassMetadata $classMetadata
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*
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* @throws \RuntimeException
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*/
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public function injectObjectManager(ObjectManager $objectManager, ClassMetadata $classMetadata)
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{
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if ($objectManager !== self::$objectManager) {
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throw new \RuntimeException("Trying to use PersistentObject with different ObjectManager instances. " .
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"Was PersistentObject::setObjectManager() called?");
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}
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$this->cm = $classMetadata;
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}
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/**
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* Sets a persistent fields value.
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*
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* @param string $field
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* @param array $args
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*
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* @throws \BadMethodCallException - When no persistent field exists by that name.
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* @throws \InvalidArgumentException - When the wrong target object type is passed to an association
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* @return void
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*/
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private function set($field, $args)
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{
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$this->initializeDoctrine();
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if ($this->cm->hasField($field) && !$this->cm->isIdentifier($field)) {
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$this->$field = $args[0];
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} else if ($this->cm->hasAssociation($field) && $this->cm->isSingleValuedAssociation($field)) {
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$targetClass = $this->cm->getAssociationTargetClass($field);
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if (!($args[0] instanceof $targetClass) && $args[0] !== null) {
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throw new \InvalidArgumentException("Expected persistent object of type '".$targetClass."'");
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}
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$this->$field = $args[0];
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$this->completeOwningSide($field, $targetClass, $args[0]);
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} else {
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throw new \BadMethodCallException("no field with name '".$field."' exists on '".$this->cm->getName()."'");
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}
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}
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/**
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* Get persistent field value.
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*
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*
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* @param string $field
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*
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* @throws \BadMethodCallException - When no persistent field exists by that name.
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* @return mixed
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*/
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private function get($field)
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{
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$this->initializeDoctrine();
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if ( $this->cm->hasField($field) || $this->cm->hasAssociation($field) ) {
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return $this->$field;
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} else {
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throw new \BadMethodCallException("no field with name '".$field."' exists on '".$this->cm->getName()."'");
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}
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}
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/**
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* If this is an inverse side association complete the owning side.
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*
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* @param string $field
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* @param ClassMetadata $targetClass
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* @param object $targetObject
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*/
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private function completeOwningSide($field, $targetClass, $targetObject)
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{
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// add this object on the owning side aswell, for obvious infinite recursion
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// reasons this is only done when called on the inverse side.
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if ($this->cm->isAssociationInverseSide($field)) {
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$mappedByField = $this->cm->getAssociationMappedByTargetField($field);
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$targetMetadata = self::$objectManager->getClassMetadata($targetClass);
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$setter = ($targetMetadata->isCollectionValuedAssociation($mappedByField) ? "add" : "set").$mappedByField;
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$targetObject->$setter($this);
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}
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}
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/**
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* Add an object to a collection
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*
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* @param string $field
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* @param array $args
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*
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* @throws \BadMethodCallException
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* @throws \InvalidArgumentException
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*/
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private function add($field, $args)
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{
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$this->initializeDoctrine();
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if ($this->cm->hasAssociation($field) && $this->cm->isCollectionValuedAssociation($field)) {
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$targetClass = $this->cm->getAssociationTargetClass($field);
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if (!($args[0] instanceof $targetClass)) {
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throw new \InvalidArgumentException("Expected persistent object of type '".$targetClass."'");
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}
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if (!($this->$field instanceof Collection)) {
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$this->$field = new ArrayCollection($this->$field ?: array());
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}
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$this->$field->add($args[0]);
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$this->completeOwningSide($field, $targetClass, $args[0]);
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} else {
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throw new \BadMethodCallException("There is no method add".$field."() on ".$this->cm->getName());
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}
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}
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/**
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* Initialize Doctrine Metadata for this class.
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*
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* @throws \RuntimeException
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* @return void
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*/
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private function initializeDoctrine()
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{
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if ($this->cm !== null) {
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return;
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}
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if (!self::$objectManager) {
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throw new \RuntimeException("No runtime object manager set. Call PersistentObject#setObjectManager().");
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}
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$this->cm = self::$objectManager->getClassMetadata(get_class($this));
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}
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/**
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* Magic method that implements
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*
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* @param string $method
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* @param array $args
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*
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* @throws \BadMethodCallException
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* @return mixed
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*/
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public function __call($method, $args)
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{
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$command = substr($method, 0, 3);
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$field = lcfirst(substr($method, 3));
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if ($command == "set") {
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$this->set($field, $args);
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} else if ($command == "get") {
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return $this->get($field);
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} else if ($command == "add") {
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$this->add($field, $args);
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} else {
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throw new \BadMethodCallException("There is no method ".$method." on ".$this->cm->getName());
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}
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}
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}
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