Question

I have set up 3 classes. ClassA has FK of ClassB and ClassC respectively. I have put up the following lines in my ClassA

    @Entity
    @Table(name="ClassA")
    public class ClassA{
    //rest of the code

        @OneToOne(fetch=FetchType.LAZY, targetEntity=ClassB.class)
        @JoinColumn(name="ClassB_ColA", columnDefinition="ClassB_ColA", updatable=false, insertable=false)
        private ClassB classB;

        @OneToOne(fetch=FetchType.LAZY, targetEntity=ClassC.class)
        @JoinColumn(name="ClassC_ColA", columnDefinition="ClassC_ColA", updatable=false, insertable=false)
        private ClassC classC;
}

and i am getting following exception

Exception [EclipseLink-60] (Eclipse Persistence Services - 2.1.1.v20100817-r8050): org.eclipse.persistence.exceptions.DescriptorException
Exception Description: The method [_persistence_set_classB_vh] or [_persistence_get_classB_vh] is not defined in the object [project.persistence.entities.ClassA].
Internal Exception: java.lang.NoSuchMethodException: project.persistence.entities.ClassA._persistence_get_classB_vh()
Mapping: org.eclipse.persistence.mappings.OneToOneMapping[classB]
Descriptor: RelationalDescriptor(project.persistence.entities.ClassA --> [DatabaseTable(ClassA)])

I did a little bit search and i could find some old threads saying about waving static loading or something. Can someone suggest a solution ?

P.S:
I am using weblogic 10 and eclipselink2

Answer 1

The problem was related to static wavingo f the objects. So what i did that i changed the loading mechanism.

From ClassB, i didn’t load anything for ClassA and for ClassA, I kept the lazy loading .. and it worked fine.