/**
* Returns an update query for the given persistent object $class.
*
* The query is initialized to update the correct table and
* it is only neccessary to set the correct values.
*
* Attention: If you use a query generated by this method to update
* objects, the internal {@link ezcPersistentIdentityMap} will be completly
* reset. This is neccessary to avoid inconsistencies, because the session
* cannot trace which objects are updated by the query.
*
* @throws ezcPersistentDefinitionNotFoundException
* if there is no such persistent class.
*
* @param string $class
*
* @return ezcQueryUpdate
*/
public function createUpdateQuery($class)
{
return $this->session->createUpdateQuery($class);
}
