I have one entity with 2 bi-directional one-to-many relations and the relations
are the list with the objects of the same type as the parent object like:
public class Institution implements Persistent {
@OneToMany(mappedBy = "uucInstitution", fetch=FetchType.EAGER)
@XmlElement(name="uucInstitution")
private List<Institution> uucInstitutions = new ArrayList<Institution>();
@ManyToOne
@XmlTransient
private Institution uucInstitution;
@OneToMany(mappedBy="attachedUUCInstitution", fetch=FetchType.EAGER)
@XmlElement(name="attachedUUCInstitution")
private List<Institution> attachedUUCInstitutions = new
ArrayList<Institution>();
@ManyToOne
@XmlTransient
private Institution attachedUUCInstitution;
@OneToMany(mappedBy="detachedUUCInstitution", fetch=FetchType.EAGER)
@XmlElement(name="detachedUUCInstitution")
private List<Institution> detachedUUCInstitutions;
@ManyToOne
@XmlTransient
private Institution detachedUUCInstitution;
}
In this case the method
public void afterUnmarshal(Unmarshaller u, Object parent) {
this.department = (Department)parent;
seems problamatic to be used, because I need to unmarshall parent for both
relations institution-detachedUUCInstitutions and
institution-attachedUUCInstitutions.
Piotr
> Date: Thu, 3 Jul 2008 09:58:00 -0400
> From: [EMAIL PROTECTED]
> Subject: Re: Cycle error in the object graph caused when returning jpa
> based objects
> To: [email protected]
>
> https://jaxb.dev.java.net/guide/Mapping_cyclic_references_to_XML.html ?
>
> 2008-07-03 Piotr Skawinski wrote:
> > Hi,
> >
> > I'm getting "A cycle is detected in the object graph" error when a
> > web-service method returns jpa objects with bi-directional relations. The
> > objects are returned fine by the jpa's entity manager and the problem
> > occures first when the objects are being translated to some xml value by
> > the CXF.
> >
> > Any suggestion how to solve this problem?
> >
> > Regards, Piotr
> >
> > _________________________________________________________________
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