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<?php
declare(strict_types=1);
namespace Doctrine\ORM\Tools;
use Doctrine\ORM\Event\LoadClassMetadataEventArgs;
use Doctrine\ORM\Mapping\Builder\EntityListenerBuilder;
use function ltrim;
/**
* Mechanism to programmatically attach entity listeners.
*/
class AttachEntityListenersListener
{
/** @var mixed[][] */
private $entityListeners = [];
/**
* Adds an entity listener for a specific entity.
*
* @param string $entityClass The entity to attach the listener.
* @param string $listenerClass The listener class.
* @param string|null $eventName The entity lifecycle event.
* @param string|null $listenerCallback The listener callback method or NULL to use $eventName.
*
* @return void
*/
public function addEntityListener($entityClass, $listenerClass, $eventName, $listenerCallback = null)
{
$this->entityListeners[ltrim($entityClass, '\\')][] = [
'event' => $eventName,
'class' => $listenerClass,
'method' => $listenerCallback ?: $eventName,
];
}
/**
* Processes event and attach the entity listener.
*
* @return void
*/
public function loadClassMetadata(LoadClassMetadataEventArgs $event)
{
$metadata = $event->getClassMetadata();
if (! isset($this->entityListeners[$metadata->name])) {
return;
}
foreach ($this->entityListeners[$metadata->name] as $listener) {
if ($listener['event'] === null) {
EntityListenerBuilder::bindEntityListener($metadata, $listener['class']);
} else {
$metadata->addEntityListener($listener['event'], $listener['class'], $listener['method']);
}
}
unset($this->entityListeners[$metadata->name]);
}
}
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