1 Reply Latest reply on Nov 2, 2012 5:09 AM by Mehmet Ali Karabulut

    Seam 2.2 + Jboss 4.2.3 : Using an alternative JPA provider instead of hibernate problem

    Mehmet Ali Karabulut Newbie

      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 continuously get  "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.

       

      Thanks,

      M.Ali

        • 1. Re: Seam 2.2 + Jboss 4.2.3 : Using an alternative JPA provider instead of hibernate problem
          Mehmet Ali Karabulut Newbie

          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)