/**
* Gets an array of Featurevector objects which contain a foreign key that references this object.
*
* If this collection has already been initialized with an identical Criteria, it returns the collection.
* Otherwise if this Track has previously been saved, it will retrieve
* related Featurevectors from storage. If this Track is new, it will return
* an empty collection or the current collection, the criteria is ignored on a new object.
*
* @param PropelPDO $con
* @param Criteria $criteria
* @return array Featurevector[]
* @throws PropelException
*/
public function getFeaturevectors($criteria = null, PropelPDO $con = null)
{
if ($criteria === null) {
$criteria = new Criteria(TrackPeer::DATABASE_NAME);
} elseif ($criteria instanceof Criteria) {
$criteria = clone $criteria;
}
if ($this->collFeaturevectors === null) {
if ($this->isNew()) {
$this->collFeaturevectors = array();
} else {
$criteria->add(FeaturevectorPeer::TRACK_ID, $this->id);
FeaturevectorPeer::addSelectColumns($criteria);
$this->collFeaturevectors = FeaturevectorPeer::doSelect($criteria, $con);
}
} else {
// criteria has no effect for a new object
if (!$this->isNew()) {
// the following code is to determine if a new query is
// called for. If the criteria is the same as the last
// one, just return the collection.
$criteria->add(FeaturevectorPeer::TRACK_ID, $this->id);
FeaturevectorPeer::addSelectColumns($criteria);
if (!isset($this->lastFeaturevectorCriteria) || !$this->lastFeaturevectorCriteria->equals($criteria)) {
$this->collFeaturevectors = FeaturevectorPeer::doSelect($criteria, $con);
}
}
}
$this->lastFeaturevectorCriteria = $criteria;
return $this->collFeaturevectors;
}
/**
* Retrieve object using using composite pkey values.
* @param int $track_id
* @param int $featurevectortype_id
* @param PropelPDO $con
* @return Featurevector
*/
public static function retrieveByPK($track_id, $featurevectortype_id, PropelPDO $con = null)
{
$key = serialize(array((string) $track_id, (string) $featurevectortype_id));
if (null !== ($obj = FeaturevectorPeer::getInstanceFromPool($key))) {
return $obj;
}
if ($con === null) {
$con = Propel::getConnection(FeaturevectorPeer::DATABASE_NAME, Propel::CONNECTION_READ);
}
$criteria = new Criteria(FeaturevectorPeer::DATABASE_NAME);
$criteria->add(FeaturevectorPeer::TRACK_ID, $track_id);
$criteria->add(FeaturevectorPeer::FEATUREVECTORTYPE_ID, $featurevectortype_id);
$v = FeaturevectorPeer::doSelect($criteria, $con);
return !empty($v) ? $v[0] : null;
}
