Ejb3Configuration should output a warning if no persistence.xml is found ------------------------------------------------------------------------ Key: EJB-201 URL: http://opensource.atlassian.com/projects/hibernate/browse/EJB-201 Project: Hibernate Entity Manager Type: Improvement

Components: EntityManager Versions: 3.2.0.cr1 Environment: Any Environment with missing persistence.xml or bad ClassLoaders Reporter: René Treffer Assignee: Emmanuel Bernard Fix For: 3.2.0.cr2

Original Estimate: 30 minutes Remaining: 30 minutes If persistence.xml can't be found javax.ejb.Persistence return's "No Persistence found for EntityManager <name>". However it might help a lot of people if Ejb3Configuration could output a warning in public EntityManagerFactory createEntityManagerFactory(String emName, Map integration) { The warning might be something like "No META-INF/persistence.xml found". In my case it looks like a Jetty6 ClassLoader problem, a simple warning might have saved me hours of bugtracking. A sample Trace: 93676 [btpool0-20] INFO org.hibernate.ejb.Version - Hibernate EntityManager 3.2.0.CR1 93712 [btpool0-20] INFO org.hibernate.cfg.annotations.Version - Hibernate Annotations 3.2.0.CR1 93729 [btpool0-20] INFO org.hibernate.cfg.Environment - Hibernate 3.2 cr2 93736 [btpool0-20] INFO org.hibernate.cfg.Environment - hibernate.properties not found 93739 [btpool0-20] INFO org.hibernate.cfg.Environment - Bytecode provider name : cglib 93752 [btpool0-20] INFO org.hibernate.cfg.Environment - using JDK 1.4 java.sql.Timestamp handling 93923 [btpool0-20] DEBUG org.hibernate.ejb.Ejb3Configuration - Trying to find persistence unit: losem <<< Here should be a "WARN org.hibernate.ejb.Ejb3Configuration - No META-INF/persistence.xml found" followed by java.lang.ExceptionInInitializerError ...... Caused by: javax.persistence.PersistenceException: No Persistence provider for EntityManager named losem at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:41) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:27) at de.rtjava.los.pmanager.PersistenceManager.<clinit>(PersistenceManager.java:58) ... 29 more Good luck and a big thank-you fr Hibernate!