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JPA

 
Jay Tai
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Java MySQL Database Netbeans IDE
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I'm using Netbeans 7 on Win Server 2008 R2. I'm building a sample JPA application, following the book entitled Java EE6 Development with Netbeans 7 by Heffelfinger.




From chapter 6 I follow the book's instructions, using the NB wizards to create entity classes, entities from the Database tables and finally the JSP pages to perform the CRUD operations. When running the application I get:




Error occurred during deployment: Exception while preparing the app : Exception [EclipseLink-28018] (Eclipse Persistence Services - 2.5.0.v20130507-3faac2b): org.eclipse.persistence.exceptions.EntityManagerSetupException

Exception Description: Predeployment of PersistenceUnit [jpawebPU] failed.

Internal Exception: Exception [EclipseLink-7220] (Eclipse Persistence Services - 2.5.0.v20130507-3faac2b): org.eclipse.persistence.exceptions.ValidationException

Exception Description: The @JoinColumns on the annotated element [field customerId] from the entity class [class com.manaar.entities.Telephone] is incomplete. When the source entity class uses a composite primary key, a @JoinColumn must be specified for each join column using the @JoinColumns. Both the name and the referencedColumnName elements must be specified in each such @JoinColumn.. Please see server.log for more details.

C:\jsfapplications\jpaweb\nbproject\build-impl.xml:1046: The module has not been deployed.

The database creation script (using the Java DB):






The annotated element class is as follows. I modified the orginially generated class to capture both the composite and main primary key in the source entity (Customer.java), but this still didn't fix the problem. I would appreciate any advice about this error and how to resolve it. Thanks in advance, J!



 
Tim Holloway
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There's nothing specific to JSF here, so I'm moving it to the ORM forum.
 
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