how to have identity map in doctine ORM

Question

need to use a good PHP ORM that has elements of Datamapper and i am not clever enough to code it myself.

chosen doctrine, but after reading through the user guide, cannot find anything that says how to use identity map to lower calls to database.

please show me how to have identity map in doctrine ORM?

just read and understood stuff like datamapper, activerecord, identity map, domain model YESTERDAY via fowler's PEAA book.

so please go a bit more details in the answers. thank you.

Answer 1

As seen in this article Doctrine 2 supports the identity map pattern