[hibernate-issues] [Hibernate-JIRA] Resolved: (HHH-5827) Cascade persist does not observe correct order and fails

[Gail Badner (JIRA)]

     [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-5827?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gail Badner resolved HHH-5827.
------------------------------

      Assignee: Gail Badner
    Resolution: Duplicate

> Cascade persist does not observe correct order and fails
> --------------------------------------------------------
>
>                 Key: HHH-5827
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5827
>             Project: Hibernate Core
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 3.5.6
>            Reporter: Ralf Pöhlmann
>            Assignee: Gail Badner
>            Priority: Blocker
>
> Persisting an entity fails sometimes with CascadeType.PERSIST option. This is the case when the order of persisting entities is important. Example:
> Container
>     |
>     -- Element -----------------|
>     |                      Association
>     -- Opposite Element --------|
>     
> Persisting Container should persists in the given order:
> 1. Element 
> 2. Opposite Element 
> 3. Association (depends on element an opposite)
> Testing this scenario with Hibernate sometimes works and sometimes fails. Same code works fine with EclipseLink as JPA provider.
> In order to reproduce the problem create three entities: Container, Element, Association. 
> Test Case:
> final Container container = new Container();
> final Element element = new Element();
> container.addElement(element);
> final Opposite opposite = new Element();
> container.addElement(opposite);
> final Association association = new Association(element, opposite);
> em.persist(container);
> @Entity
> public class Container {
> 	...
> 	@OneToMany(mappedBy = "container", cascade = { CascadeType.PERSIST, CascadeType.REMOVE })
> 	private Collection<Element> elements = new HashSet<Element>();
> 	...
> }
> @Entity
> public class Element {
> 	...
> 	@ManyToOne(optional = false)
> 	@JoinColumn(name = "container_id", referencedColumnName = "id")
> 	private Container container;
> 	@OneToMany(mappedBy = "element", cascade = { CascadeType.PERSIST, CascadeType.REMOVE })
> 	private Collection<Association> outgoing = new HashSet<Association>();
> 	@OneToMany(mappedBy = "opposite", cascade = { CascadeType.REMOVE })
> 	private Collection<Association> incoming = new HashSet<Association>();
> 	...
> }
> @Entity
> public class Association {
> 	...
> 	public Association(final Element element, final Element opposite) {
> 		this.element = element;
> 		this.opposite = opposite;
> 		element.addOutgoingAssociation(this);
> 		opposite.addIncomingAssociation(this);
> 	}
> 	
> 	@ManyToOne(optional = false)
> 	@JoinColumn(name = "element_id", referencedColumnName = "id")
> 	private Element element;
> 	@ManyToOne(optional = false)
> 	@JoinColumn(name = "opposite_id", referencedColumnName = "id", unique = false)
> 	private Element opposite;
> 	...
> }

-- 
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira