/**
* Checks to see if an entity of a class with passed in keys exists
* in the map. If it exist it will return the entity if not it will return
* null
*
* @param AnDomainDescriptionAbstract $description The entity description
* @param array $identifiers The keys that uniquely identifies the entity
*
* @return AnDomainEntityAbstract
*/
public function findEntity($description, $identifiers)
{
$classes = $description->getUniqueIdentifiers();
foreach ($classes as $class) {
foreach ($identifiers as $key => $value) {
$property = $description->getProperty($key);
$value = $property->serialize($value);
$value = implode('', $value);
//use the identifier application as the unique context
$key = $description->getEntityIdentifier()->application . $key . $value;
if (isset($this->_identity_map[$class][$key])) {
//found an entity
$entity = $this->_identity_map[$class][$key];
//only return an entity if it's still within the space
if (!$this->_entities->contains($entity)) {
return null;
}
//if the description we are using is the parent of the found entity
//if not then we must have found a different entity with the common parent
//as the caller repository
if (!is_a($entity, $description->getEntityIdentifier()->classname)) {
return null;
}
return $entity;
}
}
}
return null;
}
