EJB Maven module using JPA - maven

Question

I have simple maven EJB module using JPA. This is my persistance.xml file
<persistence xmlns="http://java.sun.com/xml/ns/persistence" version="2.0">
<persistence-unit name="Persistence">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<mapping-file>GroupTypes.xml</mapping-file>
<properties>
<property name="hibernate.connection.url" value="jdbc:oracle:thin:#127.0.0.1:1521:E"/>
<property name="hibernate.connection.driver_class" value="oracle.jdbc.driver.OracleDriver"/>
<property name="hibernate.connection.username" value="username"/>
<property name="hibernate.connection.password" value="password"/>
</properties>
</persistence-unit>
</persistence>
I am using EJB Stateless Bean and I am trying to get all attributes from GroupTypes table. This is my bean implementation:
public class TestBean
{
private GroupTypes GroupTypes;
private EntityManagerFactory entityManagerFactory;
private EntityManager entityManager;
#WebMethod (operationName = "justTesting")
public boolean justTesting(#WebParam (name = "param") String value)
{
try
{
entityManagerFactory = Persistence.createEntityManagerFactory("Persistance");
entityManager = entityManagerFactory.createEntityManager();
Query query = entityManager.createQuery("Select name from GroupTypes");
List<AmmEdGroupTypes> result = query.getResultList();
return true;
}
catch(Exception e)
{
e.printStackTrace();
return false;
}
}
}
When I try to invoke this method I get exeption: javax.persistence.PersistenceException: No Persistence provider for EntityManager named Persistance.
My persistance.xml file is placed in folder resources/META-INF/persistance.xml, and if I am not using bean this solution works. Does anydbody have some idea why this is happening only in case when I am using bean?
I am using Intellij 12.1.1, Oracle 11g, Glassfish 3.1 server and JAVA 1.6.

Answer 1

I solved this problem in the following way:
Installed hibernate add-on on glassfish (using glassfish update tool)
On glassfish added jdb connection pool _AmmPool with properties: className, username,password,databaseName and url
On glassfish added jdbc resource jdbc/__amm binding with connection pool _AmmPool
Changed persistence.xml file
Changed pom.xml file
Copied the following libraries into glassfish domains/domain1/lib folder:
antlr-2.7.7
commons-collections-3.2.1,
dom4j-1.6.1,
ejb3-persistence-1.0.2.GA,
hibernate3-maven-plugin-3.0,
hibernate-commons-annotations-4.0.2.Final,
hibernate-core-4.2.2.Final,
hibernate-entitymanager-4.2.2.Final,
javassist-3.15.0-GA,
jta-1.1,
log4j-1.2.17,
oracle-jdbc-11.1.0.6.0-Production+,
slf4j-api-1.6.1
slf4j-log4j12-1.7.5
A also copied these libraries into glassfish/lib floder.
This is my new persistance.xml file: http://pastebin.com/xbEU9Tr0
And this is my pom.xml file: http://pastebin.com/uEjhW36