Add Hibernate 3 to JBoss AS 7 JBoss EAP 6 Migrate Hibernate 3 to JBoss 7 JBoss eap6

Removed

JBoss comes with Hibernate 4 jars. The Hibernate Module is located in

C:\jboss-eap-6.1\modules\system\layers\base\org\hibernate\main

Jboss adds Hibernate if he detects the presence of an @PersistenceUnit, @PersistenceContext annotation, or a <persistence-unit-ref> or <persistence-context-ref> . So we don't need to declare dependency in the jboss-deployment-structure.xml.

But in my case, my application is using Hibernate 3.3, so I have errors in my Hibernate imports as Hibernate 3 differs from Hibernate 4. What to doooooo.

Ok, as I would like to use Hibernate 3 in different application, I prefer to create a new module in JBoss. But this time it will be easier as I have a Hibernate in my modules. So let's start:

Step1:

Create a folder named 3 under "C:\jboss-eap-6.1\modules\system\layers\base\org\hibernate\"

Step2:

Working with Hibernate 3.3, I have downloaded it and put it in the directory 3 with the file module.xml. But I have an error :

javax.persistence.PersistenceException: JBAS011466: PersistenceProvider 'org.hibernate.ejb.HibernatePersistence' not found

In fact 'org.hibernate.ejb.HibernatePersistence' don’t exists at all in Hibernate 3.3, I have upgrated the application to use Hibernate3.6 and the error disappeared. So my hibernate/3 directory looks like this :

And my module.xml associated is this one:

There is no need to add anything to jboss-dependency-structure.xml as it will be loaded implicitely.

Step3: 

Make changes in the persistence.xml

In fact you should delete the provider from persistence.xml, which was org.hibernate.ejb.HibernatePersistence and add this line.

<property name="jboss.as.jpa.providerModule" value="org.hibernate:3" />

The persistence.xml looks like this :