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20 namespace Doctrine\Common\Persistence;
23 * Contract for a Doctrine persistence layer ObjectManager class to implement.
25 * @link www.doctrine-project.org
27 * @author Benjamin Eberlei <kontakt@beberlei.de>
28 * @author Jonathan Wage <jonwage@gmail.com>
30 interface ObjectManager
33 * Finds an object by its identifier.
35 * This is just a convenient shortcut for getRepository($className)->find($id).
37 * @param string $className The class name of the object to find.
38 * @param mixed $id The identity of the object to find.
40 * @return object The found object.
42 public function find($className, $id);
45 * Tells the ObjectManager to make an instance managed and persistent.
47 * The object will be entered into the database as a result of the flush operation.
49 * NOTE: The persist operation always considers objects that are not yet known to
50 * this ObjectManager as NEW. Do not pass detached objects to the persist operation.
52 * @param object $object The instance to make managed and persistent.
56 public function persist($object);
59 * Removes an object instance.
61 * A removed object will be removed from the database as a result of the flush operation.
63 * @param object $object The object instance to remove.
67 public function remove($object);
70 * Merges the state of a detached object into the persistence context
71 * of this ObjectManager and returns the managed copy of the object.
72 * The object passed to merge will not become associated/managed with this ObjectManager.
74 * @param object $object
78 public function merge($object);
81 * Clears the ObjectManager. All objects that are currently managed
82 * by this ObjectManager become detached.
84 * @param string|null $objectName if given, only objects of this type will get detached.
88 public function clear($objectName = null);
91 * Detaches an object from the ObjectManager, causing a managed object to
92 * become detached. Unflushed changes made to the object if any
93 * (including removal of the object), will not be synchronized to the database.
94 * Objects which previously referenced the detached object will continue to
97 * @param object $object The object to detach.
101 public function detach($object);
104 * Refreshes the persistent state of an object from the database,
105 * overriding any local changes that have not yet been persisted.
107 * @param object $object The object to refresh.
111 public function refresh($object);
114 * Flushes all changes to objects that have been queued up to now to the database.
115 * This effectively synchronizes the in-memory state of managed objects with the
120 public function flush();
123 * Gets the repository for a class.
125 * @param string $className
127 * @return \Doctrine\Common\Persistence\ObjectRepository
129 public function getRepository($className);
132 * Returns the ClassMetadata descriptor for a class.
134 * The class name must be the fully-qualified class name without a leading backslash
135 * (as it is returned by get_class($obj)).
137 * @param string $className
139 * @return \Doctrine\Common\Persistence\Mapping\ClassMetadata
141 public function getClassMetadata($className);
144 * Gets the metadata factory used to gather the metadata of classes.
146 * @return \Doctrine\Common\Persistence\Mapping\ClassMetadataFactory
148 public function getMetadataFactory();
151 * Helper method to initialize a lazy loading proxy or persistent collection.
153 * This method is a no-op for other objects.
159 public function initializeObject($obj);
162 * Checks if the object is part of the current UnitOfWork and therefore managed.
164 * @param object $object
168 public function contains($object);