From: <glassfish_at_javadesktop.org>
Date: Thu, 01 Jul 2010 05:36:07 PDT

Hi,

I'm fairly new to glassfish and i can't manage to deploy properly my enterprise application on it.
I'm using Glassfish 3.0.1 and JPA 2 with Hibernate 3.5.0 as a persistence provider. My Ear used to deploy and initialize itself just fine on Jboss 6 M2, but for some reason i wanted to migrate to Glassfish.

Problem is, the EntityManager injection doesn't seem to work in my Dao session bean

Here is the structure of my Ear:

Ear
________________
- META-INF
--- application.xml

- my-domain.jar
--- META-INF
------ persistence.xml
--- POJOs

- my-ejb-daos.jar
--- MyDAO

- library.jar

- my-web.war

my-ejb-daos.jar contain a reference to my-domain.jar in its manifest's class-path entry.

I created a Connection pool which i can ping successfully and a jdbc resource with the exact same name as the jta-data-source element in my persistence.xml

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="MY-UNIT-NAME" transaction-type="JTA">
                <provider>org.hibernate.ejb.HibernatePersistence</provider>
                <jta-data-source>jdbc/MY-DATASOURCE</jta-data-source>
                <properties>
                        <property name="hibernate.dialect" value="org.hibernate.dialect.SQLServerDialect" />
                        <property name="hibernate.hbm2ddl.auto" value="update" />
                </properties>
        </persistence-unit>
</persistence>


Deployment fails just after the servlet startup. the servlet tries to load some data from the domain via my DAO and it fails and throw this exception:

java.lang.IllegalStateException: Unable to retrieve EntityManagerFactory for unitName MY-UNIT-NAME

In my DAO, I just try to inject an EntityManagerFactory like this
        @PersistenceContext(unitName="MY-UNIT-NAME")
        protected EntityManager entityManager;

and then use it like in this example:
        return entityManager.find(entityClass, id);

After reading this thread : (http://forums.java.net/jive/thread.jspa?messageID=396967 ), I tried putting persistence.xml in the META-INF folder of my-ejb-daos.jar but that doesn't help.

Any idea why the persistence unit isn't resolved ?
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