[hibernate-issues] [Hibernate-JIRA] Closed: (HHH-2250) Create an appropriate error message if Query.setEntity is passed a NULL value

Create an appropriate error message if Query.setEntity is passed a NULL value ----------------------------------------------------------------------------- Key: HHH-2250 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2250 Project: Hibernate3 Type: Improvement

Components: query-hql Versions: 3.2.0.ga, 3.2.1 Reporter: Jonas Maurus Assignee: Steve Ebersole Priority: Trivial Fix For: 3.2.2

setEntity(xyz, null) ends in a NPE in SessionImpl.guessEntityName(). This previously came up as HHH-675. I just spent hours tracking this NPE in our application, then upgrading Hibernate because I thought it might be a Hibernate bug :-/. The offending line read: .setEntity("customer", user.getCustomer()) "user" being an entity managed by Hibernate with user.customer being a nullable ManyToOne-relation. The current mode of "crash-and-burn" really looks like a Hibernate bug and not like expected behavior. I'd like to recommend that setEntity() should explicitly check for null-values.