abstract class PersistentObject in Plug 7

PersistentObject base class that implements getter/setter methods for all mapped fields and associations by overriding __call.

This class is a forward compatible implementation of the PersistentObject trait.

Limitations:

1. All persistent objects have to be associated with a single ObjectManager, multiple ObjectManagers are not supported. You can set the ObjectManager with `PersistentObject#setObjectManager()`. 2. Setters and getters only work if a ClassMetadata instance was injected into the PersistentObject. This is either done on `postLoad` of an object or by accessing the global object manager. 3. There are no hooks for setters/getters. Just implement the method yourself instead of relying on __call(). 4. Slower than handcoded implementations: An average of 7 method calls per access to a field and 11 for an association. 5. Only the inverse side associations get autoset on the owning side as well. Setting objects on the owning side will not set the inverse side associations.

@example

PersistentObject::setObjectManager($em);

class Foo extends PersistentObject { private $id; }

$foo = new Foo(); $foo->getId(); // method exists through __call

@author Benjamin Eberlei <kontakt@beberlei.de>

Hierarchy

class \Doctrine\Common\Persistence\PersistentObject implements ObjectManagerAware

Expanded class hierarchy of PersistentObject

1 file declares its use of PersistentObject

PersistentObjectTest.php in lib/doctrine/common/tests/Doctrine/Tests/Common/Persistence/PersistentObjectTest.php

File

lib/doctrine/common/lib/Doctrine/Common/Persistence/PersistentObject.php, line 57

Namespace

Doctrine\Common\Persistence

View source

abstract class PersistentObject implements ObjectManagerAware {

  /**
   * @var ObjectManager|null
   */
  private static $objectManager = null;

  /**
   * @var ClassMetadata|null
   */
  private $cm = null;

  /**
   * Sets the object manager responsible for all persistent object base classes.
   *
   * @param ObjectManager|null $objectManager
   *
   * @return void
   */
  public static function setObjectManager(ObjectManager $objectManager = null) {
    self::$objectManager = $objectManager;
  }

  /**
   * @return ObjectManager|null
   */
  public static function getObjectManager() {
    return self::$objectManager;
  }

  /**
   * Injects the Doctrine Object Manager.
   *
   * @param ObjectManager $objectManager
   * @param ClassMetadata $classMetadata
   *
   * @return void
   *
   * @throws \RuntimeException
   */
  public function injectObjectManager(ObjectManager $objectManager, ClassMetadata $classMetadata) {
    if ($objectManager !== self::$objectManager) {
      throw new \RuntimeException("Trying to use PersistentObject with different ObjectManager instances. " . "Was PersistentObject::setObjectManager() called?");
    }
    $this->cm = $classMetadata;
  }

  /**
   * Sets a persistent fields value.
   *
   * @param string $field
   * @param array  $args
   *
   * @return void
   *
   * @throws \BadMethodCallException   When no persistent field exists by that name.
   * @throws \InvalidArgumentException When the wrong target object type is passed to an association.
   */
  private function set($field, $args) {
    $this
      ->initializeDoctrine();
    if ($this->cm
      ->hasField($field) && !$this->cm
      ->isIdentifier($field)) {
      $this->{$field} = $args[0];
    }
    else {
      if ($this->cm
        ->hasAssociation($field) && $this->cm
        ->isSingleValuedAssociation($field)) {
        $targetClass = $this->cm
          ->getAssociationTargetClass($field);
        if (!$args[0] instanceof $targetClass && $args[0] !== null) {
          throw new \InvalidArgumentException("Expected persistent object of type '" . $targetClass . "'");
        }
        $this->{$field} = $args[0];
        $this
          ->completeOwningSide($field, $targetClass, $args[0]);
      }
      else {
        throw new \BadMethodCallException("no field with name '" . $field . "' exists on '" . $this->cm
          ->getName() . "'");
      }
    }
  }

  /**
   * Gets a persistent field value.
   *
   * @param string $field
   *
   * @return mixed
   *
   * @throws \BadMethodCallException When no persistent field exists by that name.
   */
  private function get($field) {
    $this
      ->initializeDoctrine();
    if ($this->cm
      ->hasField($field) || $this->cm
      ->hasAssociation($field)) {
      return $this->{$field};
    }
    else {
      throw new \BadMethodCallException("no field with name '" . $field . "' exists on '" . $this->cm
        ->getName() . "'");
    }
  }

  /**
   * If this is an inverse side association, completes the owning side.
   *
   * @param string        $field
   * @param ClassMetadata $targetClass
   * @param object        $targetObject
   *
   * @return void
   */
  private function completeOwningSide($field, $targetClass, $targetObject) {

    // add this object on the owning side as well, for obvious infinite recursion
    // reasons this is only done when called on the inverse side.
    if ($this->cm
      ->isAssociationInverseSide($field)) {
      $mappedByField = $this->cm
        ->getAssociationMappedByTargetField($field);
      $targetMetadata = self::$objectManager
        ->getClassMetadata($targetClass);
      $setter = ($targetMetadata
        ->isCollectionValuedAssociation($mappedByField) ? "add" : "set") . $mappedByField;
      $targetObject
        ->{$setter}($this);
    }
  }

  /**
   * Adds an object to a collection.
   *
   * @param string $field
   * @param array  $args
   *
   * @return void
   *
   * @throws \BadMethodCallException
   * @throws \InvalidArgumentException
   */
  private function add($field, $args) {
    $this
      ->initializeDoctrine();
    if ($this->cm
      ->hasAssociation($field) && $this->cm
      ->isCollectionValuedAssociation($field)) {
      $targetClass = $this->cm
        ->getAssociationTargetClass($field);
      if (!$args[0] instanceof $targetClass) {
        throw new \InvalidArgumentException("Expected persistent object of type '" . $targetClass . "'");
      }
      if (!$this->{$field} instanceof Collection) {
        $this->{$field} = new ArrayCollection($this->{$field} ?: array());
      }
      $this->{$field}
        ->add($args[0]);
      $this
        ->completeOwningSide($field, $targetClass, $args[0]);
    }
    else {
      throw new \BadMethodCallException("There is no method add" . $field . "() on " . $this->cm
        ->getName());
    }
  }

  /**
   * Initializes Doctrine Metadata for this class.
   *
   * @return void
   *
   * @throws \RuntimeException
   */
  private function initializeDoctrine() {
    if ($this->cm !== null) {
      return;
    }
    if (!self::$objectManager) {
      throw new \RuntimeException("No runtime object manager set. Call PersistentObject#setObjectManager().");
    }
    $this->cm = self::$objectManager
      ->getClassMetadata(get_class($this));
  }

  /**
   * Magic methods.
   *
   * @param string $method
   * @param array  $args
   *
   * @return mixed
   *
   * @throws \BadMethodCallException
   */
  public function __call($method, $args) {
    $command = substr($method, 0, 3);
    $field = lcfirst(substr($method, 3));
    if ($command == "set") {
      $this
        ->set($field, $args);
    }
    else {
      if ($command == "get") {
        return $this
          ->get($field);
      }
      else {
        if ($command == "add") {
          $this
            ->add($field, $args);
        }
        else {
          throw new \BadMethodCallException("There is no method " . $method . " on " . $this->cm
            ->getName());
        }
      }
    }
  }

}

Members

Name	Modifiers	Type	Description
PersistentObject::$cm	private	property
PersistentObject::$objectManager	private static	property
PersistentObject::add	private	function	Adds an object to a collection.
PersistentObject::completeOwningSide	private	function	If this is an inverse side association, completes the owning side.
PersistentObject::get	private	function	Gets a persistent field value.
PersistentObject::getObjectManager	public static	function
PersistentObject::initializeDoctrine	private	function	Initializes Doctrine Metadata for this class.
PersistentObject::injectObjectManager	public	function	Injects the Doctrine Object Manager. Overrides ObjectManagerAware::injectObjectManager
PersistentObject::set	private	function	Sets a persistent fields value.
PersistentObject::setObjectManager	public static	function	Sets the object manager responsible for all persistent object base classes.
PersistentObject::__call	public	function	Magic methods.

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abstract class PersistentObject in Plug 7

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