[OPENJPA-1181] Metamodel Generation must be more selective and controllable

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.0
• Fix Version/s: 2.0.0-beta
• Component/s: jpa
• Assignee: Pinaki Poddar
• Reporter: Pinaki Poddar
• Created: 17/Jul/09 20:57
• Updated: 09/Mar/10 18:31
• Resolved: 12/Nov/09 06:42

Description

JPA 2.0 specifies canonical memtamodel classes for persistent entities. Currently this generation process is uncontrolled.
Every time the compiler is invoked with

$ java -processor openjpa.AnnotationProcessor6 my.PObject

we generate my.PObject_.java.

We should be able to control this process. In fact, current limitation of being non-selective stops us from activating the service discovery mechanism.

One suggestion (by Jeremy) is to add a annotation attribute in the @Entity class.
Another suggestion (by Albert) is to bring this generation process closer to PCEnhancer.

Can we also make use of the has @Generated annotation timestamp in PObject_.java to make some decisions?

Issue Links

• is part of: OPENJPA-1010 Instantiate meta-model classes for JPA 2.0 from source code annotations
• is part of: OPENJPA-1152 OpenJPA 2.0 iteration 9 primary task