e7a6d87990
What I'm doing with this patch is marking the entity for update when there is a modification in the ManyToMany relationship so the listeners are notified about it. The main reason for this is for hooking up services like Solr or other indexers to update the entities even for ManyToMany relationships.
Doctrine 2 ORM
Master: 
2.2: 
2.1: 
Doctrine 2 is an object-relational mapper (ORM) for PHP 5.3.2+ that provides transparent persistence for PHP objects. It sits on top of a powerful database abstraction layer (DBAL). One of its key features is the option to write database queries in a proprietary object oriented SQL dialect called Doctrine Query Language (DQL), inspired by Hibernates HQL. This provides developers with a powerful alternative to SQL that maintains flexibility without requiring unnecessary code duplication.