Creating definitions programmatically in EclipseLink

Question

I am trying to use EclipseLink in OSGi environment.

What I want to do is, building a provider bundle that exposes EntityManager to other bundles.

The problem is, entity classes can not be determined and written to persistence.xml file at compile time. So I want to be able to define entity classes programmatically. I can scan for all Entity classes, but as far as I could see, there is no way to define it in EclipseLink, while it is possible in Hibernate. (Hibernate has some different issues in OSGi environment, so I can not use it either)

How can I define entity classes programmatically ?

Note: Using spring is not an option for me; and defining ClassDescriptors from scratch is not acceptible. I must say that it is really stupid that such an essential feature is not supported neither in JPA nor EclipseLink directly.

score 1 · Answer 1 · answered Mar 19 '12 at 09:26

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did you try <jar-file> tag in persistence.xml?

you can pack all your persistence classes into jar, include it into your persistence unit bundle and persistence xml.

more details in JPA2 spec 8.2.1.6.3

answered Mar 19 '12 at 09:26

Dmytro Pishchukhin

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If I could do that, I could also add class names to the persistence.xml file. Any bundle can have its persistence classes and they can not be merged into a single one. – koders Mar 19 '12 at 18:55

score 1 · Answer 2 · edited Jul 24 '12 at 03:14

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Did you try this?

<exclude-unlisted-classes>false<exclude-unlisted-classes>

edited Jul 24 '12 at 03:14

Anthony

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answered Mar 19 '12 at 14:48

James

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Yes, but no chance. Despite blogs and articles about using JPA in Java SE environment claim, this parameter does not work in SE environment. – koders Mar 19 '12 at 18:51

Creating definitions programmatically in EclipseLink

2 Answers2