/**
* Adds an object to the instance pool.
*
* Propel keeps cached copies of objects in an instance pool when they are retrieved
* from the database. In some cases -- especially when you override doSelect*()
* methods in your stub classes -- you may need to explicitly add objects
* to the cache in order to ensure that the same objects are always returned by doSelect*()
* and retrieveByPK*() calls.
*
* @param Songs $obj A Songs object.
* @param string $key (optional) key to use for instance map (for performance boost if key was already calculated externally).
*/
public static function addInstanceToPool($obj, $key = null)
{
if (Propel::isInstancePoolingEnabled()) {
if ($key === null) {
$key = (string) $obj->getId();
}
// if key === null
SongsPeer::$instances[$key] = $obj;
}
}
/**
* Exclude object from result
*
* @param Songs $songs Object to remove from the list of results
*
* @return SongsQuery The current query, for fluid interface
*/
public function prune($songs = null)
{
if ($songs) {
$this->addUsingAlias(SongsPeer::ID, $songs->getId(), Criteria::NOT_EQUAL);
}
return $this;
}
/**
* Filter the query by a related Songs object
*
* @param Songs|PropelObjectCollection $songs the related object to use as filter
* @param string $comparison Operator to use for the column comparison, defaults to Criteria::EQUAL
*
* @return AlbumQuery The current query, for fluid interface
* @throws PropelException - if the provided filter is invalid.
*/
public function filterBySongs($songs, $comparison = null)
{
if ($songs instanceof Songs) {
return $this->addUsingAlias(AlbumPeer::ID, $songs->getAlbumId(), $comparison);
} elseif ($songs instanceof PropelObjectCollection) {
return $this->useSongsQuery()->filterByPrimaryKeys($songs->getPrimaryKeys())->endUse();
} else {
throw new PropelException('filterBySongs() only accepts arguments of type Songs or PropelCollection');
}
}