Seam-persistence Tomcat 6. Bug or a feature?

[piklos]

I'm trying to get weld and JPA with seam persistance on tomcat.
I've got some problems. I managed to solve them i a way. I am wondering if this is good.
Here's the short version:
I used maven archetype: jboss-jsf-weld-servlet-webapp
I added dependencies to seam solder, seam config, and seam persistence, along with jboss logging, and hibernate.
Here is my beans.xml (located in WEB-INF)

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
      http://docs.jboss.org/cdi/beans_1_0.xsd">
     <interceptors>
          <class>org.jboss.seam.transaction.TransactionInterceptor</class>
     </interceptors>
</beans>

Here is my seam-beans.xml (located in classes/META-iNF):

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xmlns:s="urn:java:ee" xmlns:t="urn:java:org.jboss.seam.transaction"
     xsi:schemaLocation="
      http://java.sun.com/xml/ns/javaee
      http://docs.jboss.org/cdi/beans_1_0.xsd">
     <t:SeSynchronizations>
          <s:modifies />
     </t:SeSynchronizations>
     <t:EntityTransaction>
          <s:modifies />
     </t:EntityTransaction>
</beans>

Here is my entityManager producer:

public class EMFProducer {
     @ExtensionManaged
     @Produces
     @PersistenceUnit(name="pu")
     @ConversationScoped
     EntityManagerFactory producerField;
}

Here is 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="pu">
          <provider>org.hibernate.ejb.HibernatePersistence</provider>
          <properties>
               <!-- Auto detect annotation model classes -->
               <property name="hibernate.archive.autodetection" value="class" />

               <!-- Datasource -->
               <property name="hibernate.hbm2ddl.auto" value="create-drop"/>
               
               <property name="hibernate.connection.url" value="jdbc:hsqldb:mem:unit-testing-jpa" />
               <property name="hibernate.connection.driver_class" value="org.hsqldb.jdbcDriver" />
               <property name="hibernate.dialect" value="org.hibernate.dialect.HSQLDialect" />
               <property name="hibernate.hbm2ddl.auto" value="create-drop" />
               <property name="hibernate.connection.username" value="sa" />
               <property name="hibernate.connection.password" value="" />

          </properties>
     </persistence-unit>
</persistence>

But when i try to inject entityManager into the HelloWorld.java i get

Caused by: java.lang.RuntimeException: javax.persistence.PersistenceException: No Persistence provider for EntityManager named
...
        at org.jboss.seam.persistence.ManagedPersistenceContextBeanLifecycle.get
EntityManagerFactory(ManagedPersistenceContextBeanLifecycle.java:197)

I looked at a file called:
ManagedPersistenceContextBeanLifecycle.java line 197 its this method:

protected EntityManagerFactory getEntityManagerFactory()
   {
      if (emf == null)
      {
         Bean<EntityManagerFactory> bean = (Bean) manager.resolve(manager.getBeans(EntityManagerFactory.class, qualifiers));
         if (bean == null)
         {
            throw new RuntimeException("Could not find EntityManagerFactory bean with qualifiers" + Arrays.toString(qualifiers));
         }
         CreationalContext<EntityManagerFactory> ctx = manager.createCreationalContext(bean);
         emf = (EntityManagerFactory) manager.getReference(bean, EntityManagerFactory.class, ctx); // line 197
      }
      return emf;
   }

I made a package org.jboss.seam.persistence in my workspace with the class ManagedPersistenceContextBeanLifecycle.java. I copied the whole class from the seam-persistence.jar here except i changed this:

protected EntityManagerFactory getEntityManagerFactory()
   {
      if (emf == null)
      {
           emf = Persistence.createEntityManagerFactory("pu");
      }
      return emf;
   }

And now everything works. I get the injection, i get the transactional management.

So tell me am I doing something wrong here, and that's why the recommended way doesn't work? Is there any way i can make it work on the recommended way? Finally how can i get No Persistence provider for EntityManager named when i can get  EntityMAnager like this? What's wrong here?

Thanks in advance.

[piklos]

Ouch found an error

@PersistenceUnit(name="pu")

should have been

@PersistenceUnit(unitName = "pu")

in EMFProducer. That way it works in a conventional way too. Yay.