Weld proxy returns EntityManagerFactoryImpl / TransactionScopedEntityManager

[grossetieg]

Hi,

I have several persistence units and I want to resolve it at runtime. I produce EntityManager with the @Produces annotation :

@Singleton
public class JPAResourceProducer {


     @Produces
     @PersistenceUnit(unitName="foo-bar-ds")
     @PersistenceUnitQualifier(packagePrefix = "com.foo.bar")
     static EntityManager foorBarPersistenceUnit;
}

Then I inject any EntityManager :

@Singleton
public class JPAResourceInstance {

     @Inject
     @Any
     private Instance<EntityManager> entityManagerInstance;

     public void soSomeWork() {
          for (EntityManager entityManager : entityManagerInstance) {
               // do some work...
     }
}

When I want to call some method on the entityManager an exception is thrown :

Caused by: java.lang.IllegalArgumentException: object is not an instance of declaring class
          at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.6.0_26]
          at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) [rt.jar:1.6.0_26]
          at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) [rt.jar:1.6.0_26]
          at java.lang.reflect.Method.invoke(Method.java:597) [rt.jar:1.6.0_26]
          at org.jboss.weld.util.reflection.SecureReflections$13.work(SecureReflections.java:264) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]
          at org.jboss.weld.util.reflection.SecureReflectionAccess.run(SecureReflectionAccess.java:52) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]
          at org.jboss.weld.util.reflection.SecureReflectionAccess.runAsInvocation(SecureReflectionAccess.java:137) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]
          at org.jboss.weld.util.reflection.SecureReflections.invoke(SecureReflections.java:260) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]
          at org.jboss.weld.bean.builtin.CallableMethodHandler.invoke(CallableMethodHandler.java:51) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]
          at org.jboss.weld.bean.proxy.EnterpriseTargetBeanInstance.invoke(EnterpriseTargetBeanInstance.java:56) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]
          at org.jboss.weld.bean.proxy.ProxyMethodHandler.invoke(ProxyMethodHandler.java:105) [weld-core-1.1.5.AS71.Final.jar:2012-02-10 15:31]
          at org.jboss.weldx.persistence.EntityManager$-1808529401$Proxy$_$$_Weld$Proxy$.getEntityManagerFactory(EntityManager$-1808529401$Proxy$_$$_Weld$Proxy$.java) [hibernate-jpa-2.0-api-1.0.1.Final.jar:]

With some debug I found that some of the produced EntityManager are "org.hibernate.ejb.EntityManagerFactoryImpl" and some are "org.jboss.as.jpa.container.TransactionScopedEntityManager". When I call method "on" TransactionScopedEntityManager the exception is not thrown.

I didn't find any difference between my persistence.xml or my JPAResourceProducer classes. What I'm missing ?

I'm using weld 1.1.5.AS71.Final with AS7.1.1.Final.

Your help will be greatly appreciated !

Guillaume.

[alesj]

Are you sure you don't have some JPA-spec.jar in your app?

[grossetieg]

Hi Ales,

Thanks for your quick reply. My application is a single EAR :

• my.ear
  • moduleA.jar
  • moduleB.jar
  • moduleC.jar
  • lib/
  • META-INF/

moduleA.jar and moduleB.jar produce EntityManager and moduleC.jar inject any EntityManager produced.

I searched for javax and jpa packages inside the lib folder of my ear but nothing... except two jars for jpbm and drools persistence :

• jbpm-persistence-jpa-5.2.0.Final.jar
• drools-persistence-jpa-5.3.1.Final.jar

Do you think that could be the root of my problem ?

Guillaume.

[alesj]

If any of these two jars shades in EntityManager class, than that would explain it.

If not, no idea atm.

[grossetieg]

Hi,

I debug into org.jboss.weld.bean.proxy.ProxyFactory#createProxyClass but the ModuleClassLoader object is "huge" and I'm not sure what I'm looking for ? I will try to install a newer version just in case...

[edit] Same issue with weld 1.1.9.Final

Guillaume.