Skip to:

  1. Skip to Jira Navigation
  2. Skip to Side Navigation
  3. Skip to Main Content

MapJoin.key() produces unusable Path object

Description

I'm using MapJoin like this:

The em.createQuery(cq) call throws a NullPointerException:

The same code works fine on EclipseLink.

Seems that the problem is in the MapKeyHelpers.MapKeySource constructor, which calls the super constructor from AbstractPathSource with a null pathSource argument:

This way, the pathSource is initialized to null. Then, AbstractPathSource's getPathIdentifier() will always throw a NPE.

Activity

Show:

Former userJuly 10, 2014 at 5:58 AM

Closing resolved issued in preparation for releasing 4.3.6.

Aris TzoumasApril 30, 2014 at 7:41 AM

Any plans on fixing this bug? There seems to be an open pull request:
https://github.com/hibernate/hibernate-orm/pull/735

Jarkko HyötyApril 11, 2014 at 10:43 AM

Experiencing the same problem using 4.3.5.Final.

Pavel LechevMarch 10, 2014 at 1:26 PM
Edited

We have a specific scenario where queries have to be constructed using both KEY(xyz) function and JOIN abc ON [predicate].

Support for extended JOIN [...] ON [...] was added in 4.3.0 which is great. Unfortunately re-introducing in a different form as indicated here, makes JPA querying useless in our case. So... we are forced to drop back to using native SQL.

This is a major defect and I am surprised it was not picked up by the functional testing when upgrading from 4.2.9 to 4.3.0. The effect of has the same severity as and can be seen as functional regression. Please address it as a matter of urgency.

Note: we've attempted using both JPA QL and Criteria API with the same results across 4.2.9 and 4.3.0+

Thimo SeitzFebruary 6, 2014 at 5:56 PM

If i add the methods MapKeySource.getPathIdentifier() and MapKeyPath.render() from the commit "c421d7014b0a8b1270c34da01574837e9c4dbc36" the query seems to return the correct result.
It seems that the Fix for Bug affect also the 4.3 branch.

Fixed

Details

Assignee

Reporter

Components

Fix versions

Affects versions

Priority

Created January 21, 2014 at 1:28 AM
Updated May 5, 2022 at 10:55 AM
Resolved May 5, 2022 at 10:55 AM