[jboss-user] [EJB 3.0] - totally weird error: org.hibernate.hql.ast.tree.FromClause.f

[jsinglet@gmail.com]

Okay, I'm totally lost here: 

Whenever the following code is executed I get this error:

org.hibernate.hql.ast.tree.FromClause.findIntendedAliasedFromElementBasedOnCrazyJPARequirements(FromClause.java:120)

What the heck does this mean? My HQL is perfectly valid!

  public void endSession()
  |   {
  |     /*
  |      * first get all writing sessions with a null end date. 
  |      */
  |      String userid = context.getCallerPrincipal().getName();
  |      
  |      List result = em.createQuery( "select w from WritingSession w where w.whatProject.projectOwner=:whatName and w.whatProject.defaultProject=true and w.sessionEnd=null order by id desc")
  |      .setParameter("whatName", userid).getResultList();
  |      
  |      if(result!=null || result.size()!=0) 
  |      {
  |        WritingSession theOpenSession = (WritingSession)result.get(result.size()-1);
  |        theOpenSession.setSessionEnd(new Date());
  |        em.merge(theOpenSession);
  |      }
  |      
  |      //otherwise there are no sessions to close.
  |   }
  | 
JLS


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