Cannot determine java-type from given member [null]

[klind]

When deploying an ear file on JBoss I get this...

Caused by: java.lang.IllegalArgumentException: Cannot determine java-type from given member [null]

        at org.hibernate.ejb.metamodel.AttributeFactory$BaseAttributeMetadata.<init>(AttributeFactory.java:564)

        at org.hibernate.ejb.metamodel.AttributeFactory$SingularAttributeMetadataImpl.<init>(AttributeFactory.java:652)

        at org.hibernate.ejb.metamodel.AttributeFactory$SingularAttributeMetadataImpl.<init>(AttributeFactory.java:642)

        at org.hibernate.ejb.metamodel.AttributeFactory.determineAttributeMetadata(AttributeFactory.java:506)

        at org.hibernate.ejb.metamodel.AttributeFactory.buildAttribute(AttributeFactory.java:91)

        at org.hibernate.ejb.metamodel.MetadataContext.wrapUp(MetadataContext.java:185)

        at org.hibernate.ejb.metamodel.MetamodelImpl.buildMetamodel(MetamodelImpl.java:64)

        at org.hibernate.ejb.EntityManagerFactoryImpl.<init>(EntityManagerFactoryImpl.java:91)

        at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:904)

        at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:889)

        at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:73)

        at org.jboss.as.jpa.service.PersistenceUnitServiceImpl.createContainerEntityManagerFactory(PersistenceUnitServiceImpl.java:162)

        at org.jboss.as.jpa.service.PersistenceUnitServiceImpl.start(PersistenceUnitServiceImpl.java:85)

        at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811) [jboss-msc-1.0.2.GA.jar:1.0.2.GA]

        at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746) [jboss-msc-1.0.2.GA.jar:1.0.2.GA]

        ... 3 more

I have a lot of entity classes... but this doesn't tell me much about where the error is.

[nickarls]

Try cranking up the log levels to TRACE, perhaps you can see what's being worked on.

[klind]

I tried this : in the standalone.xml

<logger category="org.jboss.as.jpa">

       <level name="DEBUG"/>

</logger>

but nothing helpful was in the log... what category should I put TRACE on..

[klind]

My persistence.xml  :

<persistence xmlns="http://java.sun.com/xml/ns/persistence"

          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

          xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"

          version="2.0">

          <persistence-unit name="jsi" transaction-type="JTA">

                    <provider>org.hibernate.ejb.HibernatePersistence</provider>

                    <jta-data-source>java:jboss/jsi/JSIXADataSource</jta-data-source>

  <jar-file>entities-3.30.2-SNAPSHOT.jar</jar-file>

                    <properties>

                              <property name="hibernate.dialect" value="org.hibernate.dialect.PostgreSQLDialect" />

                              <property name="hibernate.hbm2ddl.auto" value="create-drop" />

                              <property name="hibernate.show.sql" value="true" />

                    </properties>

          </persistence-unit>

</persistence>

but even though I out commented the jar file :

  <!-- <jar-file>entities-3.30.2-SNAPSHOT.jar</jar-file> -->

I still get this error

The jar is the only place where there is @Entity.

[nickarls]

Perhaps related to this? https://hibernate.onjira.com/browse/HHH-4870

There is a pointer on how to disable static metamodel generation (didn't read it through, though)

[klind]

Even though I use hibernate 4.1.10.Final the problem is still there.

The <property name="hibernate.ejb.metamodel.generation" value="disabled" /> solved the problem.

But what is the downside to this.. ??