public ClazzDetail mergeClazzDetail(ClazzDetail clazzDetail) {
try {
ClazzDetail cd = em.find(ClazzDetail.class, clazzDetail.getClazz_DETAIL_ID());
cd.setClazz(clazzDetail.getClazz());
cd.setClazz_DETAIL_ID(clazzDetail.getClazz_DETAIL_ID());
cd.setStudent(clazzDetail.getStudent());
return em.merge(cd);
} catch (Exception e) {
throw new EJBException(e.getMessage());
}
}
@Override
public ClazzDetail addClazzDetail(int classID, int studentID) {
Clazz clazz = em.find(Clazz.class, classID);
Student student = em.find(Student.class, studentID);
if ((clazz != null) && (student != null)) {
ClazzDetail cd = new ClazzDetail();
cd.setClazz(clazz);
cd.setStudent(student);
return this.persistClazzDetail(cd);
}
return null;
}