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Bug 366952

Summary:	Cannot use Criteria API when creating EntityManagerFactory with an existing ServerSession
Product:	z_Archived	Reporter:	Ilyes Ben Hassen <ilyes_bh>
Component:	Eclipselink	Assignee:	Nobody - feel free to take it <nobody>
Status:	NEW ---	QA Contact:
Severity:	normal
Priority:	P2	CC:	tom.ware
Version:	unspecified
Target Milestone:	---
Hardware:	PC
OS:	Windows 7
Whiteboard:

Description Ilyes Ben Hassen

2011-12-16 10:49:48 EST

Build Identifier: 

According to the Eclipselink javadoc it is possible to create an EntityManagerFactory with a ServerSession.
The EntityManager created is able to execute JPQL but not Criteria API.

see following code snippt:

ServerSession serverSession = EclipselinkService.getInstance().getServerSession()
	EntityManagerFactory entityManagerFactory = JpaHelper.createEntityManagerFactory(serverSession);
	EntityManager entityManager = entityManagerFactory.createEntityManager();
	CriteriaBuilder cb = entityManager.getCriteriaBuilder();
			
Following exception is thrown since setupImpl is null:

java.lang.NullPointerException at org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.getMetamodel(EntityManagerFactoryDelegate.java:592)
	at org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.getCriteriaBuilder(EntityManagerFactoryDelegate.java:566)
	at org.eclipse.persistence.internal.jpa.EntityManagerImpl.getCriteriaBuilder(EntityManagerImpl.java:2287)

Note: Our data model is created automatically, so it hard to use JPA annotation or XML mapping, we create however owr own org.eclipse.persistence.sessions.Project and therefore a ServerSession.
How can we reuse these objects to construct a full-feature EntityManagerFactory?

Reproducible: Always

Comment 1 Tom Ware

2012-01-23 10:41:26 EST

Setting target and priority.  See the following page for the meanings of these fields:

http://wiki.eclipse.org/EclipseLink/Development/Bugs/Guidelines

Community: Please vote for this bug if it is important to you.  Votes are one of the main criteria we use to determine which bugs to fix next.

Comment 2 Eclipse Webmaster

2022-06-09 10:27:08 EDT

The Eclipselink project has moved to Github: https://github.com/eclipse-ee4j/eclipselink