Question

Code from my Entity Role

   @Embedded 
   @LazyCollection(LazyCollectionOption.FALSE)
   @CollectionOfElements
   @JoinTable(name = "TEST_TABLE", joinColumns = @JoinColumn(name = "ROLE_ID"))
   @AttributeOverrides({
      @AttributeOverride(name = "code", column = @Column(name = "TSTCODE")),
      @AttributeOverride(name = "work", column = @Column(name = "TSTWRK"))
   })
       private List<TestID> tests;  
}  

TestID class

@Embeddable
@AccessType("field")
public class TestID implements Serializable 
{
   private String code;

   private String work;  

// getters, setters  
}   

Get exception SQLGrammarException

Caused by: java.sql.SQLException: ORA-00904: "TESTS0_"."WORK": invalid identifier   

Entity manager create query that trying get access to columns CODE and WORK instead of TSTCODE and TSTWRk that are in @Column annotations.
Any ideas?

Hibernate-annotation 3.2.1.ga
persistance-api 1.0
jboss-4.2.3.GA

UPDATE:

if rename fields in TestID class to table’s columns names, then all warks normally

@Embeddable
@AccessType("field")
public class TestID implements Serializable 
{
   private String tstcode;

   private String tstwks;  

Answer 1

Remove @CollectionOfElements and just use @Embedded. I think you’re double-mapping it as it is right now. Also, JPA’s @ElementCollection is recommended over Hibernate’s @CollectionOfElements.

Update: I kinda missed the fact that you’re mapping a collection of components. You’ll want to add an @Column(name="...") to the fields in your TestID to make it map correctly in that case. Even though it’s somewhat contrary to the way embedded components are supposed to work, that’s the only way I know to do it.