I work on a RCP using openJPA and Derby. It works fine.
Kann I see your RCP (and Plugin) Source?
Bye
Marco
----- Original Message -----
Da : Rüdiger Herrmann <rherrmann@innoopract.com>
A : users@openjpa.apache.org
Oggetto : JPA: adding entities to EntityManagerFactory
programmatically
Data : Tue, 27 May 2008 23:49:16 +0200
> Hi,
>
> using OpenJPA in a JavaSE (Eclipse RCP) environment, I
> would like to register JPA-annotated classes that will
> participate in the persistence mechanism at runtime.
>
> Background:
> Presistence-aware classes are contributed via Eclipse
> Extension Points. All these classes have JPA annotations.
>
> Furthermore I don't want to use class enhancement as I
> don't have control over the VM startup parameters (like
> -javaagent) in which the application is running in.
> Though there seems to be an effort to make class
> enhancement optional ([1]), I couldn't find further
> information on how to disable class enhancement.
>
> I played around with the attached code (persist one
> instance of class Person that has no further
> dependencies/references) but I couldn't get it to work.
>
> The various attempts resulted either in
> Attempt to cast instance "...Person..." to
> PersistenceCapable failed. Ensure that it
> has been enhanced.
> or
> The type "class org.example.openjpatest.Person"
> has not been enhanced.
> depending on wether I called
> MetaDataRepository#addMetaData() or
> MetaDataRepository#addPersistenceAware() (no idea what the
> difference is) and wether I called mernge() before
> persist().
>
> If desired I can send the full (Eclipse) project with all
> required jars (HSQL, OpenJPA plus dependencies, JTA) that
> runs out-of-the-box.
>
>
> Thanks in advance
> Rüdiger
>
> [1] https://issues.apache.org/jira/browse/OPENJPA-293
>
>
>
> [Allegato : NoEnhancerExample.java]
> [Allegato : Person.java]
....
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