[Hibernate-issues] [Hibernate-JIRA] Created: (EJB-201) Ejb3Configuration should output a warning if no persistence.xml is found

[<no...@at...>]

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 =20
    Versions: 3.2.0.cr1   =20
 Environment: Any Environment with missing persistence.xml or bad ClassLoad=
ers
    Reporter: Ren=C3=A9 Treffer


If persistence.xml can't be found javax.ejb.Persistence return's "No Persis=
tence found for EntityManager <name>".
However it might help a lot of people if Ejb3Configuration could output a w=
arning in

public EntityManagerFactory createEntityManagerFactory(String emName, Map i=
ntegration) {

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 EntityManag=
er 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.propert=
ies 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 jav=
a.sql.Timestamp handling
93923 [btpool0-20] DEBUG org.hibernate.ejb.Ejb3Configuration  - Trying to f=
ind persistence unit: losem

<<< Here should be a "WARN org.hibernate.ejb.Ejb3Configuration - No META-IN=
F/persistence.xml found"

followed by=20

java.lang.ExceptionInInitializerError
......
Caused by: javax.persistence.PersistenceException: No Persistence provider =
for EntityManager named losem
        at javax.persistence.Persistence.createEntityManagerFactory(Persist=
ence.java:41)
        at javax.persistence.Persistence.createEntityManagerFactory(Persist=
ence.java:27)
        at de.rtjava.los.pmanager.PersistenceManager.<clinit>(PersistenceMa=
nager.java:58)
        ... 29 more

Good luck and a big thank-you fr Hibernate!

--=20
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators:
   http://opensource.atlassian.com/projects/hibernate/secure/Administrators=
.jspa
-
For more information on JIRA, see:
   http://www.atlassian.com/software/jira