Maybe a classpath issue in the IDE project's config ?
On Jan 18, 2010, at 02:15 , Thomas Polliard wrote:
> Doing an example trying to learn OpenJPA and JPA I ran into a strange problem.
>
> java.lang.ClassNotFoundException: com.arjuna.jta.JTA_TransactionManager
> java.lang.ClassNotFoundException:
> com.bluestone.jta.SaTransactionManagerFactory
> java.lang.ClassNotFoundException: org.openejb.OpenEJB
> java.lang.ClassNotFoundException: com.sun.jts.jta.TransactionManagerImpl
> java.lang.ClassNotFoundException:
> com.inprise.visitransact.jta.TransactionManagerImpl
>
>
> I am not using "Any of these yet for some reason, I am getting this error"
>
> The problem is Only when I run the main program:
>
> Main.java
> package com.trukoda.examples.jpa;
>
> import javax.persistence.EntityManager;
> import javax.persistence.EntityManagerFactory;
> import javax.persistence.Persistence;
>
> public class Main {
> public static void main(String[] args) {
> EntityManagerFactory factory =
> Persistence.createEntityManagerFactory("ExampleJPA");
> Account user1 = new Account("polliard");
> Account user2 = new Account("mcclung");
>
> Host host1 = new Host("uranium");
> Host host2 = new Host("thorium");
>
> EntityManager em = factory.createEntityManager();
>
> em.getTransaction().begin();
> em.persist(host1);
> em.persist(host2);
> em.getTransaction().commit();
> }
> }
>
> Any idea why this this would causes classes I am not referencing from being
> loaded.
>
> I am including the following in my classpath:
>
> .:/Users/polliard/Library/Java/Derby/10.5.3.0/derby.jar:/Users/polliard/Library/Java/Openjpa/2.0-M3/openjpa-all-2.0.0-M3.jar
>
> The two accounts (Account and Host) are basic Entities and the database gets
> created without issue using the mappingtool.
>
> Thanks for any assistance,
>
> Thomas
