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

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: https://hibernate.onjira.com/browse/HHH-5465 Project: Hibernate ORM 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.