/**
* Returns a delete query for the given persistent object $class.
*
* The query is initialized to delete from the correct table and
* it is only neccessary to set the where clause.
*
* Example:
* <code>
* $q = $session->createDeleteQuery( 'Person' );
* $q->where( $q->expr->gt( 'age', $q->bindValue( 15 ) ) );
* $session->deleteFromQuery( $q );
* </code>
*
* Attention: If you use a query generated by this method to delete objects,
* the internal {@link ezcPersistentIdentityMap} will be completly reset.
* This is neccessary to avoid inconsistencies, because the session cannot
* trace which objects are deleted by the query.
*
* @throws ezcPersistentObjectException
* if there is no such persistent class.
*
* @param string $class
*
* @return ezcQueryDelete
*/
public function createDeleteQuery($class)
{
return $this->session->createDeleteQuery($class);
}
