/**
* Retrieve a single object by pkey.
*
* @param int $pk the primary key.
* @param PropelPDO $con the connection to use
* @return Reference
*/
public static function retrieveByPK($pk, PropelPDO $con = null)
{
if (null !== ($obj = ReferencePeer::getInstanceFromPool((string) $pk))) {
return $obj;
}
if ($con === null) {
$con = Propel::getConnection(ReferencePeer::DATABASE_NAME, Propel::CONNECTION_READ);
}
$criteria = new Criteria(ReferencePeer::DATABASE_NAME);
$criteria->add(ReferencePeer::ID, $pk);
$v = ReferencePeer::doSelect($criteria, $con);
return !empty($v) > 0 ? $v[0] : null;
}
/**
* Find object by primary key.
* Propel uses the instance pool to skip the database if the object exists.
* Go fast if the query is untouched.
*
* <code>
* $obj = $c->findPk(12, $con);
* </code>
*
* @param mixed $key Primary key to use for the query
* @param PropelPDO $con an optional connection object
*
* @return Reference|Reference[]|mixed the result, formatted by the current formatter
*/
public function findPk($key, $con = null)
{
if ($key === null) {
return null;
}
if (null !== ($obj = ReferencePeer::getInstanceFromPool((string) $key)) && !$this->formatter) {
// the object is already in the instance pool
return $obj;
}
if ($con === null) {
$con = Propel::getConnection(ReferencePeer::DATABASE_NAME, Propel::CONNECTION_READ);
}
$this->basePreSelect($con);
if ($this->formatter || $this->modelAlias || $this->with || $this->select || $this->selectColumns || $this->asColumns || $this->selectModifiers || $this->map || $this->having || $this->joins) {
return $this->findPkComplex($key, $con);
} else {
return $this->findPkSimple($key, $con);
}
}