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StackOverFlow [message #755308]

Mon, 07 November 2011 22:33

Caio
Messages: 4
Registered: November 2011

Junior Member

Hi for all,

I have started project with EclipseLink... thats great... but, I got stackoverflow with this scenario:
Entities : ClassList, lvlupgain and skilltrees.
ClassList have a column id and it can be referenced for lvlupgain and skilltrees.
ClassList -> lvlupgain (OneToOne)
ClassList -> skilltrees (OneToMany)

RecordCount:
ClassList = 89
lvlupgain = 89
skill_trees = 13722

 public void loadData() {
        EntityManagerFactory emf;
        emf = Persistence.createEntityManagerFactory("TestRelationshipPU");
        ClassListJpaController jpa = new ClassListJpaController(emf);
        List<ClassList> listData = jpa.findClassListEntities();
        for (ClassList classList : listData) {
            System.out.println("classList" + classList.getClassName());
        }
    }

Error:

[EL Info]: 2011-11-08 01:08:30.682--ServerSession(9202071)--EclipseLink, version: Eclipse Persistence Services - 2.2.0.v20110202-r8913
[EL Info]: 2011-11-08 01:08:31.644--ServerSession(9202071)--file:/D:/Projects/TestRelationship/src/_TestRelationshipPU login successful
Exception in thread "main" java.lang.StackOverflowError
	at org.eclipse.persistence.internal.sessions.AbstractSession.getDescriptor(AbstractSession.java:2067)
	at org.eclipse.persistence.internal.sessions.AbstractSession.getDescriptor(AbstractSession.java:2136)
	at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.registerExistingObject(UnitOfWorkImpl.java:3816)
	at org.eclipse.persistence.mappings.ObjectReferenceMapping.buildUnitofWorkCloneForPartObject(ObjectReferenceMapping.java:96)
	at org.eclipse.persistence.mappings.ObjectReferenceMapping.buildCloneForPartObject(ObjectReferenceMapping.java:70)

What cause this error? Thanks so much for your help and NICE Project!!!

Caio

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Re: StackOverFlow [message #756020 is a reply to message #755308]

Thu, 10 November 2011 08:56

James Sutherland
Messages: 1939
Registered: July 2009
Location: Ottawa, Canada

Senior Member

Include more of the stack trace.

Are you using LAZY relationships, does the error occur if you do?

Include your code for the classes. Have you mapped the Id correctly, what cache type are you using?

James : Wiki : Book : Blog : Twitter

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