.
*/
namespace Doctrine\ORM\Mapping;
/**
* A one-to-one mapping describes a uni-directional mapping from one entity
* to another entity.
*
* IMPORTANT NOTE:
*
* The fields of this class are only public for 2 reasons:
* 1) To allow fast READ access.
* 2) To drastically reduce the size of a serialized instance (private/protected members
* get the whole class name, namespace inclusive, prepended to every property in
* the serialized representation).
*
* Instances of this class are stored serialized in the metadata cache together with the
* owning ClassMetadata instance.
*
* @since 2.0
* @author Roman Borschel
* @author Giorgio Sironi
*/
class OneToOneMapping extends AssociationMapping
{
/**
* READ-ONLY: Maps the source foreign/primary key columns to the target primary/foreign key columns.
* i.e. source.id (pk) => target.user_id (fk).
* Reverse mapping of _targetToSourceKeyColumns.
*/
public $sourceToTargetKeyColumns = array();
/**
* READ-ONLY: Maps the target primary/foreign key columns to the source foreign/primary key columns.
* i.e. target.user_id (fk) => source.id (pk).
* Reverse mapping of _sourceToTargetKeyColumns.
*/
public $targetToSourceKeyColumns = array();
/**
* READ-ONLY: Whether to delete orphaned elements (when nulled out, i.e. $foo->other = null)
*
* @var boolean
*/
public $orphanRemoval = false;
/**
* READ-ONLY: The join column definitions. Only present on the owning side.
*
* @var array
*/
public $joinColumns = array();
/**
* READ-ONLY: A map of join column names to field names that are used in cases
* when the join columns are fetched as part of the query result.
*
* @var array
*/
public $joinColumnFieldNames = array();
/**
* {@inheritdoc}
*
* @param array $mapping The mapping to validate & complete.
* @return array The validated & completed mapping.
* @override
*/
protected function _validateAndCompleteMapping(array $mapping)
{
parent::_validateAndCompleteMapping($mapping);
if (isset($mapping['joinColumns']) && $mapping['joinColumns']) {
$this->isOwningSide = true;
}
if ($this->isOwningSide) {
if ( ! isset($mapping['joinColumns']) || ! $mapping['joinColumns']) {
// Apply default join column
$mapping['joinColumns'] = array(array(
'name' => $this->sourceFieldName . '_id',
'referencedColumnName' => 'id'
));
}
foreach ($mapping['joinColumns'] as $joinColumn) {
$this->sourceToTargetKeyColumns[$joinColumn['name']] = $joinColumn['referencedColumnName'];
$this->joinColumnFieldNames[$joinColumn['name']] = isset($joinColumn['fieldName'])
? $joinColumn['fieldName'] : $joinColumn['name'];
}
$this->joinColumns = $mapping['joinColumns'];
$this->targetToSourceKeyColumns = array_flip($this->sourceToTargetKeyColumns);
}
//TODO: if orphanRemoval, cascade=remove is implicit!
$this->orphanRemoval = isset($mapping['orphanRemoval']) ?
(bool) $mapping['orphanRemoval'] : false;
return $mapping;
}
/**
* {@inheritdoc}
*
* @return boolean
* @override
*/
public function isOneToOne()
{
return true;
}
/**
* {@inheritdoc}
*
* @param object $sourceEntity the entity source of this association
* @param object $targetEntity the entity to load data in
* @param EntityManager $em
* @param array $joinColumnValues Values of the join columns of $sourceEntity.
*/
public function load($sourceEntity, $targetEntity, $em, array $joinColumnValues = array())
{
$targetClass = $em->getClassMetadata($this->targetEntityName);
if ($this->isOwningSide) {
$inverseField = isset($targetClass->inverseMappings[$this->sourceEntityName][$this->sourceFieldName]) ?
$targetClass->inverseMappings[$this->sourceEntityName][$this->sourceFieldName]->sourceFieldName
: false;
// Mark inverse side as fetched in the hints, otherwise the UoW would
// try to load it in a separate query (remember: to-one inverse sides can not be lazy).
$hints = array();
if ($inverseField) {
$hints['fetched'][$targetClass->name][$inverseField] = true;
if ($targetClass->subClasses) {
foreach ($targetClass->subClasses as $targetSubclassName) {
$hints['fetched'][$targetSubclassName][$inverseField] = true;
}
}
}
/* cascade read-only status
if ($em->getUnitOfWork()->isReadOnly($sourceEntity)) {
$hints[Query::HINT_READ_ONLY] = true;
}
*/
$targetEntity = $em->getUnitOfWork()->getEntityPersister($this->targetEntityName)->load($joinColumnValues, $targetEntity, $this, $hints);
if ($targetEntity !== null && $inverseField && ! $targetClass->isCollectionValuedAssociation($inverseField)) {
$targetClass->reflFields[$inverseField]->setValue($targetEntity, $sourceEntity);
}
} else {
$conditions = array();
$sourceClass = $em->getClassMetadata($this->sourceEntityName);
$owningAssoc = $targetClass->getAssociationMapping($this->mappedBy);
// TRICKY: since the association is specular source and target are flipped
foreach ($owningAssoc->targetToSourceKeyColumns as $sourceKeyColumn => $targetKeyColumn) {
if (isset($sourceClass->fieldNames[$sourceKeyColumn])) {
$conditions[$targetKeyColumn] = $sourceClass->reflFields[$sourceClass->fieldNames[$sourceKeyColumn]]->getValue($sourceEntity);
} else {
throw MappingException::joinColumnMustPointToMappedField(
$sourceClass->name, $sourceKeyColumn
);
}
}
$targetEntity = $em->getUnitOfWork()->getEntityPersister($this->targetEntityName)->load($conditions, $targetEntity, $this);
if ($targetEntity !== null) {
$targetClass->setFieldValue($targetEntity, $this->mappedBy, $sourceEntity);
}
}
return $targetEntity;
}
}