How to properly use a TX from a servlet...

Question

Hi all...
          Is this the proper way to surround this servlet method with a TX? It doesnt seem to work because the relationships are not being maintained. The problem lies on the green line - It update the "CourseOffers" but not the "Enrollments" relationship. The first Assertion works, yet the second one fails! WHY - What am I missing????
          Thanks
          dave
          public void testRelations() throws Exception
          InitialContext ic = new InitialContext();
          UserTransaction tx = (UserTransaction)ic.lookup("javax.transaction.UserTransaction");
          tx.begin();
          //Create some DATA
          FacultyLocalHome facultyHome = (FacultyLocalHome)ic.lookup("FacultyLocalHome");
          FacultyLocal faculty = facultyHome.create("Computer Science","CMPT");
          ProfessorLocalHome professorHome = (ProfessorLocalHome)ic.lookup("ProfessorLocalHome");
          ProfessorLocal professor = professorHome.create(faculty, "Dr Bob");
          CourseLocalHome courseHome = (CourseLocalHome)ic.lookup("CourseLocalHome");
          CourseLocal course = courseHome.create(faculty, "Intro 2 Computing", 101,3,0,false);
          StudentLocalHome studentHome = (StudentLocalHome)ic.lookup("StudentLocalHome");
          StudentLocal student = studentHome.create(faculty, "Sally Doe","95302545");
          CourseOfferLocalHome courseOfferHome = (CourseOfferLocalHome)ic.lookup("CourseOfferLocalHome");
          CourseOfferLocal courseOffer = courseOfferHome.create(course, professor,2002,1,50);
          //Save counts before
          int courseOffersCountBefore = student.getCourseOffers().size();
          int enrollmentsCountBefore = student.getEnrollments().size();
          student.getCourseOffers().add(courseOffer);
          //Look at counts after (Both should be modified)
          assertEquals(courseOffersCountBefore +1, student.getCourseOffers().size());
          assertEquals(enrollmentsCountBefore +1, student.getEnrollments().size());
          //Delete the DATA
          student.remove();
          courseOffer.remove();
          course.remove();
          faculty.remove();
          professor.remove();
          tx.commit();
          [att1.html]
          

Answer 1

You can create custom ringtones with music in your iTunes library on your computer that does not include DRM protection. If you have a Mac running Snow Leopard or later, Apple includes at least one 3rd party app via the App Store for a Mac for creating custom ringtones. The one I've used is called Ringer, and I believe it was free or cost a couple of bucks. Creates the custom ringtone from your designated section of the song and places the ringtone in the appropriate location in your iTunes library to be selected under the Ringtones tab for your iPhone sync preferences with iTunes to be transferred to your iPhone.
I'm sure there are some free and paid 3rd party apps that provide the same for Windows.