.
*/
namespace Doctrine\ORM\Mapping;
/**
* A many-to-many mapping describes the mapping between two collections of
* entities.
*
* IMPORTANT NOTE:
*
* The fields of this class are only public for 2 reasons:
* 1) To allow fast, internal 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).
*
* @since 2.0
* @author Roman Borschel
* @author Giorgio Sironi
*/
class ManyToManyMapping extends AssociationMapping
{
/**
* The key columns of the source table.
*/
public $sourceKeyColumns = array();
/**
* The key columns of the target table.
*/
public $targetKeyColumns = array();
/**
* Maps the columns in the source table to the columns in the relation table.
*/
public $sourceToRelationKeyColumns = array();
/**
* Maps the columns in the target table to the columns in the relation table.
*/
public $targetToRelationKeyColumns = array();
/**
* List of aggregated column names on the join table.
*/
public $joinTableColumns = array();
/** FUTURE: The key column mapping, if any. The key column holds the keys of the Collection. */
//public $keyColumn;
/**
* Initializes a new ManyToManyMapping.
*
* @param array $mapping The mapping definition.
*/
public function __construct(array $mapping)
{
parent::__construct($mapping);
}
/**
* Validates and completes the mapping.
*
* @param array $mapping
* @override
*/
protected function _validateAndCompleteMapping(array $mapping)
{
parent::_validateAndCompleteMapping($mapping);
if ($this->isOwningSide) {
// owning side MUST have a join table
if ( ! isset($mapping['joinTable'])) {
throw MappingException::joinTableRequired($mapping['fieldName']);
}
// owning side MUST specify joinColumns
if ( ! isset($mapping['joinTable']['joinColumns'])) {
throw MappingException::invalidMapping($this->_sourceFieldName);
}
// owning side MUST specify inverseJoinColumns
if ( ! isset($mapping['joinTable']['inverseJoinColumns'])) {
throw MappingException::invalidMapping($this->_sourceFieldName);
}
foreach ($mapping['joinTable']['joinColumns'] as &$joinColumn) {
if ($joinColumn['name'][0] == '`') {
$joinColumn['name'] = trim($joinColumn['name'], '`');
$joinColumn['quoted'] = true;
}
$this->sourceToRelationKeyColumns[$joinColumn['referencedColumnName']] = $joinColumn['name'];
$this->joinTableColumns[] = $joinColumn['name'];
}
$this->sourceKeyColumns = array_keys($this->sourceToRelationKeyColumns);
foreach ($mapping['joinTable']['inverseJoinColumns'] as &$inverseJoinColumn) {
if ($inverseJoinColumn['name'][0] == '`') {
$inverseJoinColumn['name'] = trim($inverseJoinColumn['name'], '`');
$inverseJoinColumn['quoted'] = true;
}
$this->targetToRelationKeyColumns[$inverseJoinColumn['referencedColumnName']] = $inverseJoinColumn['name'];
$this->joinTableColumns[] = $inverseJoinColumn['name'];
}
$this->targetKeyColumns = array_keys($this->targetToRelationKeyColumns);
}
}
public function getJoinTableColumnNames()
{
return $this->joinTableColumns;
}
public function getSourceToRelationKeyColumns()
{
return $this->sourceToRelationKeyColumns;
}
public function getTargetToRelationKeyColumns()
{
return $this->targetToRelationKeyColumns;
}
public function getSourceKeyColumns()
{
return $this->sourceKeyColumns;
}
public function getTargetKeyColumns()
{
return $this->targetKeyColumns;
}
/**
* Loads entities in $targetCollection using $em.
* The data of $sourceEntity are used to restrict the collection
* via the join table.
*
* @param object The owner of the collection.
* @param object The collection to populate.
* @param array
*/
public function load($sourceEntity, $targetCollection, $em, array $joinColumnValues = array())
{
$sourceClass = $em->getClassMetadata($this->sourceEntityName);
$joinTableConditions = array();
if ($this->isOwningSide) {
foreach ($this->sourceToRelationKeyColumns as $sourceKeyColumn => $relationKeyColumn) {
// getting id
if (isset($sourceClass->reflFields[$sourceKeyColumn])) {
$joinTableConditions[$relationKeyColumn] = $sourceClass->reflFields[$sourceClass->fieldNames[$sourceKeyColumn]]->getValue($sourceEntity);
} else {
$joinTableConditions[$relationKeyColumn] = $joinColumnValues[$sourceKeyColumn];
}
}
} else {
$owningAssoc = $em->getClassMetadata($this->targetEntityName)->associationMappings[$this->mappedByFieldName];
// TRICKY: since the association is inverted source and target are flipped
foreach ($owningAssoc->targetToRelationKeyColumns as $sourceKeyColumn => $relationKeyColumn) {
// getting id
if (isset($sourceClass->reflFields[$sourceKeyColumn])) {
$joinTableConditions[$relationKeyColumn] = $sourceClass->reflFields[$sourceClass->fieldNames[$sourceKeyColumn]]->getValue($sourceEntity);
} else {
$joinTableConditions[$relationKeyColumn] = $joinColumnValues[$sourceKeyColumn];
}
}
}
$persister = $em->getUnitOfWork()->getEntityPersister($this->targetEntityName);
$persister->loadManyToManyCollection($this, $joinTableConditions, $targetCollection);
}
/**
* {@inheritdoc}
*/
public function isManyToMany()
{
return true;
}
/**
* Gets the (possibly quoted) column name of a join column that is safe to use
* in an SQL statement.
*
* @param string $joinColumn
* @param AbstractPlatform $platform
* @return string
*/
public function getQuotedJoinColumnName($joinColumn, $platform)
{
return isset($this->joinTable['joinColumns'][$joinColumn]['quoted']) ?
$platform->quoteIdentifier($joinColumn) :
$joinColumn;
}
}