The readOnly configuration is documented nowhere except in the annotations reference. I added it to the example, for a lack of a better place. But at least it will be documented somewhere. Can you also confirm that this is correct? I'm starting to use it, and I can't find a way to have doctrine validate it is really working. Even with the metadata validation tool, it won't raise an error if I put an invalid entry (`readOnlyFOOBAR: true`) or an invalid value (`readOnly: FOOBAR`), so I'm kind of blind here.
Doctrine 2 ORM
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.
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