Hibernate JPA 2.1 Support

pppoole · **Joined:** Mon Nov 19, 2007 4:40 pm **Posts:** 46

I have tried to find some sort of documentation stating exactly how much of the JPA 2.1 spec has been completed and haven't had much luck. I recently pulled down the 4.3.0.Beta5 build and attempted to work with EntityGraphs, but found that the necessary javax hint appears to not be implemented (i did a source check and saw the INFO logging indicating such). I am attempting to work with EntityGraphs to dynamically make a FetchType.LAZY field be queried eagerly (in essence a dynamic fetch join).

Here is the code I attempted to use (I actually got the example from EclipseLink, but i hate EclipseLink):

Code:

EntityGraph<SomeObject> soGraph = entityManager.createEntityGraph(SomeObject.class);
soGraph.addAttributeNodes(eagerFields);

Query soQuery = entityManager.createQuery("select so from SomeObject so where so.fieldOne=:fieldOne");
soQuery.setParameter("fieldOne", fieldOne);
soQuery.setHint("javax.persistence.fetchgraph", soGraph);
List<SomeObject> someObjects = soQuery.getResultList();

The call to setHint logs that the hint was ignored and then the EntityGraph functionality does nothing. "eagerFields" is a string array of eager fields... the result is that the eagerFields are not fetched and I get a LazyInstantiation error (expected if this fails).

So, my question is... is this functionality built in anywhere yet (an engineering build perhaps)? Am I doing this wrong (e.g. is there another way to do this)? If not, do you know when this might be part of a release? I am in the process of prototyping a future application... nothing will be released for many months, so I can certainly work with (unstable) engineering builds for what i am doing.

Thanks for the help!

-Paul

brmeyer · **Posted:** Tue Oct 29, 2013 4:32 am

Hey Paul. EntityGraph support is currently being worked on and should be released in 4.3.0.Beta6. EntityGraph through query hints is being developed under https://hibernate.atlassian.net/browse/HHH-8627. 4.3.0.Final isn't far away...

pppoole · **Joined:** Mon Nov 19, 2007 4:40 pm **Posts:** 46

Yes... I see the commits!!! Thank you for the response and I look forward to the release!

pppoole · **Joined:** Mon Nov 19, 2007 4:40 pm **Posts:** 46

Brett,

JIRA has a release date for beta 6 of Nov 6 - there was a comment in the blog for beta 5 that indicated the original date is not likely to happen as Steve had to travel that week... do you have a new release date? We are doing sprint planning this friday and I wanted to know if i should bother tasking this effort for the next sprint.

Thanks!