Seam 2.2, alternate JPA provider instead of hibernate

[mali_karabulut]

Hi,

I posted this question in another forum however couldn't get an answer yet. I hope someone here can help me about this issue:

Hi all,

I want to use another JPA provider instead of hibernate in my seam 2.2 + jboss 4.2.3 J2EE 5.0 web(crud) application.

I followed the instructions given in both seam 2.2 reference and some online resources such as http://in.relation.to/Bloggers/UsingAnAlternateJPAProviderWithSeam

However I keep getting  "java.lang.RuntimeException: java.lang.NoClassDefFoundError: javax/persistence/spi/ProviderUtil" error.

I think this is due to class path error that my server runtime can not find the alternative JPA jar file. I tried placing the [otherjpa].jar file in the server/default/deploy directory and also server/default/lib directory but with no success.

What am I doing wrong? Should I follow any special jar deployment procedure on my jboss 4.2.3 app. server?

I'll appreciate any help.

Here are some details about my configuration:

1. persistence.xml

<?xml version="1.0" encoding="UTF-8"?>

<!-- Persistence deployment descriptor for dev profile -->

<persistence version="2.0" 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">

<persistence-unit name="pu">

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

          <provider>org.batoo.jpa.core.BatooPersistenceProvider</provider>

          <jta-data-source>java:/myProjectDatasource</jta-data-source>

  <properties>

                     <property name="org.batoo.jpa.ddl" value="NONE" />

    <!--

   <property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5InnoDBDialect"/>

   <property name="hibernate.show_sql" value="false"/>

   <property name="hibernate.format_sql" value="true"/>

   <property name="jboss.entity.manager.factory.jndi.name" value="java:myProjectEntityManagerFactory"/>

    -->

          </properties>

</persistence-unit>

</persistence>

2. components.xml (partially)

<component name="org.jboss.seam.persistence.persistenceProvider"

     class="tr.com.bilisim.shgm.util.CustomBatooPersistenceProvider">

</component>

3.CustomBatooPersistenceProvider.java

package tr.com.bilisim.shgm.util;

import javax.persistence.EntityManager;

import org.jboss.seam.ScopeType;

import org.jboss.seam.annotations.Install;

import org.jboss.seam.annotations.Scope;

import org.jboss.seam.annotations.intercept.BypassInterceptors;

import org.jboss.seam.persistence.PersistenceProvider;

//@Name("org.jboss.seam.persistence.persistenceProvider")

@Scope(ScopeType.STATELESS)

@BypassInterceptors

@Install(precedence= 10/*FRAMEWORK*/ , classDependencies={"javax.persistence.EntityManager"})

public class CustomBatooPersistenceProvider extends PersistenceProvider {

   @Override

   public void setFlushModeManual(EntityManager entityManager) {

      // no-op

             System.err.println("CustomBatooPersistenceProvider-setFlushModeManual");

   }

}

4. JPA jar file placed in: (not sure where to place this jar file though)

     jboss-4.2.3.GA\server\default\deploy\batoo-jpa-0.1.6.jar

     jboss-4.2.3.GA\server\default\lib\batoo-jpa-0.1.6.jar

and also in my ear project (even tried 'Make Deployable' option for this jar file in eclipse)

     myproject-ear\Ear Content\lib\batoo-jpa-0.1.6.jar

PS: My project was perfectly working with hibernate configuration, datasource definitions etc. (No problem at all. with previous configuration)

Thanks,

M.Ali