public void delete(int id, String owner) throws DAOException {
try {
Transaction.begin();
EventBean p = factory.lookup(id);
if (p == null) {
throw new DAOException("Event does not exist: id=" + id);
}
if (!owner.equals(p.getUserId())) {
throw new DAOException("Event not owned by " + owner);
}
factory.delete(id);
Transaction.commit();
} catch (RollbackException e) {
throw new DAOException(e);
} finally {
if (Transaction.isActive()) Transaction.rollback();
}
}
