I'm experiencing problem with fetch entitities in JBoss EAP 6.4 after upgrade from 6.4 to 6.4.6, when hibernate version upgrade from 4.2.18 to 4.2.22 this error appear.

A simple sample that causes Error:

Query of leagacy EJB application that runs fine before upgrade:
SELECT a FROM EntityA a
JOIN FETCH a.b b
JOIN FETCH a.b.someAttr

I know that this query maybe is not correct or according with the JPA Spec and now throws the following error after deploy application in JBoss 6.4.6:

Caused by: java.lang.IllegalArgumentException: org.hibernate.QueryException: query specified join fetching, but the owner of the fetched association was not present in the select list [FromElement{explicit,not a collection join,fetch join,fetch non-lazy properties,classAlias=null,role=null,tableName= (...)

Adjusted query to solve the problem:

SELECT a FROM EntityA a

JOIN FETCH a.b b

JOIN FETCH b.someAttr

Refactoring of code to fix queries is the best I know but it´s hard to solve because in my case I have a large legacy system with a lot of modules that use pre-compiled namedqueries and a lot of queries created on demand. To indentify and modify whole system and make changes where was working as well using a old version of hibernate is a very annoying work and error prone. The backward compatibility in this case would be nice to me, Even it can be a problem for new development I agree .

To solve it I did a downgrade only of hibernate main module to initial default version 4.2.18 directly inside overlays created by upgrade, but this is not good because when the next patch of JBoss arrive I need to change it again. I´m trying use the JBoss modules and some configuration in persistence.xml and jboss-deployment-strcuture.xml but without success yet.

Anyone already experienced this problem ?

I already tried create a module using the version 4.2.18 of hibernate in a new Slot, changed persistence.xml to use it but the error persists anyway.

Any help or tip will be very valualble.

Thanks all.