Problem with @LocalClient and JPA Entity unit testing

[Furmaniak Christophe <Ch...@atosorigin.com>]

Hi,

I'd like to unit test directly my JPA entities, and Local Client injection (http://openejb.apache.org/3.0/local-client-injection.html) should be the solution.

It works for creation or find actions but I cannot make it work for deletion, I always get a IllegalArgumentException "Removing a detached instance".

I just took the sample from the jpa-hibertate, here is my Test:

==================================================================
package org.superbiz.injection.h3jpa;
import java.util.Properties;
import javax.annotation.Resource;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.transaction.HeuristicMixedException;
import javax.transaction.HeuristicRollbackException;
import javax.transaction.NotSupportedException;
import javax.transaction.RollbackException;
import javax.transaction.SystemException;
import javax.transaction.UserTransaction;
import org.apache.openejb.api.LocalClient;
import org.junit.Assert;
import org.junit.Test;
@LocalClient
public class LocalClientTest {
 @PersistenceContext(unitName = "movie-unit")
 private EntityManager em;
 @Resource
 private UserTransaction tx;
 @Test
 public void testCreateDelete() throws NamingException,
   NotSupportedException, SystemException, IllegalStateException,
   SecurityException, HeuristicMixedException,
   HeuristicRollbackException, RollbackException {
  Properties p = new Properties();
  p.put(Context.INITIAL_CONTEXT_FACTORY,
    "org.apache.openejb.client.LocalInitialContextFactory");
  p.put("movieDatabase", "new://Resource?type=DataSource");
  p.put("movieDatabase.JdbcDriver", "org.hsqldb.jdbcDriver");
  p.put("movieDatabase.JdbcUrl", "jdbc:hsqldb:mem:moviedb");
  p.put("movieDatabaseUnmanaged", "new://Resource?type=DataSource");
  p.put("movieDatabaseUnmanaged.JdbcDriver", "org.hsqldb.jdbcDriver");
  p.put("movieDatabaseUnmanaged.JdbcUrl", "jdbc:hsqldb:mem:moviedb");
  p.put("movieDatabaseUnmanaged.JtaManaged", "false");
  Context context = new InitialContext(p);
  context.bind("inject", this);
  Assert.assertNotNull("EntityManager should not be null", em);
  Movie movie1 = new Movie("Quentin Tarantino", "Reservoir Dogs", 1992);
  tx.begin();
  em.persist(movie1);
  tx.commit();
  Assert.assertNotSame("id should be valued", 0, movie1.getId());
  tx.begin();
  em.remove(movie1);
  tx.commit();
 }
==================================================================

[I just added a getId() method the provided  Movie class + added a -Dopenejb.tempclassloader.skip=annotations to my Eclipse Junit launcher]

Everything is OK, until the em.remove(movie1) part.

Am I doing something wrong?

Regards

Christophe

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Re: Problem with @LocalClient and JPA Entity unit testing

[cfurmaniak <ch...@atosorigin.com>]

Thanks Jean-Louis, it works.

I thought I tried this one, but maybe I've tried so many variants that my
mind got befuddled :).
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Re: Problem with @LocalClient and JPA Entity unit testing

[Jean-Louis MONTEIRO <je...@atosorigin.com>]

Hi Christophe,

Excerpt from the specification:
---
void remove(Object entity)

    Remove the entity instance.

    Parameters:
        entity - 
    Throws:
        IllegalStateException - if this EntityManager has been closed. 
        IllegalArgumentException - if not an entity or if a detached entity 
        TransactionRequiredException - if invoked on a container-managed
entity manager of type PersistenceContextType.TRANSACTION and there is no
transaction.
---

The specification requires a managed entity as a parameter.
So basically, you can fix your issue by adding a line


cfurmaniak wrote:
> 
>   Movie movie1 = new Movie("Quentin Tarantino", "Reservoir Dogs", 1992);
>   tx.begin();
>   em.persist(movie1);
>   tx.commit();
>   Assert.assertNotSame("id should be valued", 0, movie1.getId());
>   tx.begin();
>   Movie movie1Managed = em.find(Movie.class, movie1.getId());
>   em.remove(movie1Managed );
>   tx.commit();
>  }
> 

Hope it helps.
JLouis

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