[hibernate-issues] [Hibernate-JIRA] Assigned: (HHH-5465) HQL left join fetch of an element collection following a left join fetch of a one-to-one relationship causes NullPointerException

[Sharath Reddy (JIRA)]

     [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-5465?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sharath Reddy reassigned HHH-5465:
----------------------------------

    Assignee: Sharath Reddy

> HQL left join fetch of an element collection following a left join fetch of a one-to-one relationship causes NullPointerException
> ---------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HHH-5465
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5465
>             Project: Hibernate Core
>          Issue Type: Bug
>          Components: query-hql
>    Affects Versions: 3.5.4
>         Environment: Hibernate 3.5.4, Postgresql 8.4, Java 6
>            Reporter: Andrew Tolopko
>            Assignee: Sharath Reddy
>         Attachments: hibernate-left-fetch-join-element-collection.patched.zip, hibernate-left-fetch-join-element-collection.zip, log.patched.txt, log.txt
>
>
> HQL queries of the form 
> "from EntityA a left join fetch a.entityB b left join fetch b.items"
> fail with a NullPointerExeption when EntityA and EntityB have a one-to-one (@OneToOne) relationship and EntityB.items is an element collection (@ElementCollection, aka collection of values).  
> For comparison, the following HQL queries are all admissible (which intends to demonstrate that no particular clause of the the above HQL is incorrect):
> "from EntityB b left join fetch b.items"
> "from EntityA a left join fetch a.entityB"
> "from EntityA a left join fetch a.entityB.items"
> "from EntityA a left join fetch a.entityCs c left join fetch c.items" (where EntityA and EntityC have a one-to-many (@OneToMany) relationship, and EntityC.items is an element collection)
> Test code is attached.  The log output along with thrown exception is attached as log.txt.

-- 
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