/**
* Retrieve a single object by pkey.
*
* @param int $pk the primary key.
* @param PropelPDO $con the connection to use
* @return CourseRating
*/
public static function retrieveByPK($pk, PropelPDO $con = null)
{
if (null !== ($obj = CourseRatingPeer::getInstanceFromPool((string) $pk))) {
return $obj;
}
if ($con === null) {
$con = Propel::getConnection(CourseRatingPeer::DATABASE_NAME, Propel::CONNECTION_READ);
}
$criteria = new Criteria(CourseRatingPeer::DATABASE_NAME);
$criteria->add(CourseRatingPeer::ID, $pk);
$v = CourseRatingPeer::doSelect($criteria, $con);
return !empty($v) > 0 ? $v[0] : null;
}
/**
* Retrieve object using using composite pkey values.
* @param int $id
@param int $course_ins_id
* @param PropelPDO $con
* @return CourseRating
*/
public static function retrieveByPK($id, $course_ins_id, PropelPDO $con = null)
{
$key = serialize(array((string) $id, (string) $course_ins_id));
if (null !== ($obj = CourseRatingPeer::getInstanceFromPool($key))) {
return $obj;
}
if ($con === null) {
$con = Propel::getConnection(CourseRatingPeer::DATABASE_NAME, Propel::CONNECTION_READ);
}
$criteria = new Criteria(CourseRatingPeer::DATABASE_NAME);
$criteria->add(CourseRatingPeer::ID, $id);
$criteria->add(CourseRatingPeer::COURSE_INS_ID, $course_ins_id);
$v = CourseRatingPeer::doSelect($criteria, $con);
return !empty($v) ? $v[0] : null;
}
