JUnit 4.7 Rule for cleanup EasyMock object after test

I try the JUnit 4.7 rule feature and I wrote a super small ExternalResource class for easymock cleanup (reset) here is the example code that makes mocking setup easier:

import static org.easymock.EasyMock.*;

import java.util.ArrayList;
import java.util.List;

import org.junit.rules.ExternalResource;

/**
* Mock resource class for cleanup mock objects after each test run.
*/
public class MockResource extends ExternalResource {

private List Come to think of it, there will be sure more mocking work which can be done by a JUnit rule. So I think the rule feature is very nice and makes JUnit tests better to read ...

Cool JUnit 4.7 Stuff : JUnit and Files

Here a very nice example how to work with temporary files in JUnit 4.7 here

JPA with Hibernate Criteria API

I didn't know that with JPA Vendor Hibernate, the Criteria API of Hibernate can be used. That can be done by getting the Hibernate Session from the JPA Entity Manager.

Here a example code:

  Session session = (Session) entityManager.getDelegate();
  Criteria hibernateCriteria = session.createCriteria(Position.class);
  // List with all positions
  List list = hibernateCriteria.list();

Ok the question is would you like to have a dependency to Hibernate in your source code when you would use JPA, I think you wold not like to have, but technical it works...

Nicer would be a Criteria API that depends only on JPA and is not JPA vendor specific. For JPA 1 I didn't know a project that provides such a Criteria API that works fine, but in JPA 2 I think the Crititeria API would be part of the standard, so I think thats a good news.

Another example:

// Implementation with Hibernate Criteria
public List getPositionList() {
   Session session = (Session) entityManager.getDelegate();
   Criteria hibernateCriteria = session.createCriteria(Position.class);
   hibernateCriteria.addOrder(Order.desc("createTime"));
   return hibernateCriteria.list();
}

// Implementation with plain JPA
public List getPositionList() {
    Query query = entityManager.createQuery("SELECT p FROM Position p ORDER BY   p.createTime DESC");
    return query.getResultList();
}