Embeddable not support ManyToMany in Annotations?

superman_eddie · **Joined:** Tue Mar 27, 2007 11:34 pm **Posts:** 13

Hi all, can anyone tell me is hibernate annotation supported many-to-many in embeddable?

My situations:
Class Diagram:

ERD:

Seems composite-id must using separate "Embeddable" class, so I use the "IdClass" for the original class and put the "ManyToMany" to the embeddable class, but when I passing the annotation, the following exception is thrown:

Code:

Exception in thread "main" java.lang.NullPointerException
   at org.hibernate.cfg.AnnotationBinder.processElementAnnotations(AnnotationBinder.java:1148)
   at org.hibernate.cfg.AnnotationBinder.fillComponent(AnnotationBinder.java:1671)
   at org.hibernate.cfg.AnnotationBinder.bindId(AnnotationBinder.java:1704)
   at org.hibernate.cfg.AnnotationBinder.bindClass(AnnotationBinder.java:663)
   at org.hibernate.cfg.AnnotationConfiguration.processArtifactsOfType(AnnotationConfiguration.java:452)
   at org.hibernate.cfg.AnnotationConfiguration.secondPassCompile(AnnotationConfiguration.java:268)
   at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1286)

geoharp · **Posted:** Tue Apr 24, 2007 12:37 pm

Can you show your hibernate code ie annotaed classes?