EXISTS conditional operator and subquery don't return values, but they do exist

                 Key: OPENJPA-189
                 URL: https://issues.apache.org/jira/browse/OPENJPA-189
             Project: OpenJPA
          Issue Type: Bug
          Components: query
    Affects Versions: 0.9.7
            Reporter: Jacek Laskowski

The test says it all. When the line where the condition is checked is removed 
the test fails with Apache OpenJPA 0.9.7-SNAPSHOT.

  public void testExists() {
    Query query = em.createQuery("SELECT DISTINCT p FROM Projekt p WHERE EXISTS 
(SELECT zaleznosc FROM Projekt zaleznosc WHERE zaleznosc MEMBER OF p.zaleznosci 
AND zaleznosc.rodzajProjektu = 
    // Apache OpenJPA 0.9.7-SNAPSHOT workaround so the test passes
    // TopLink Essentials 2.0 BUILD 40 i Hibernate EntityManager 3.3.0.GA work 
      List<Projekt> projekty = query.getResultList();
      assert projekty.size() == 1 : projekty.size() + " projects received";
      assert projekty.get(0).getNazwa().equals("Apache Geronimo") : "Should be 
'Apache Geronimo', but was " + projekty.get(0).getNazwa();

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