How to return error from subscription function of an event

Question

I am creating a subscription function for an oracle shipped event, oracle.apps.eng.cm.changeObject.submit. The event fires fine, i can do my custom validations in this function. In case the validations fail, I need to return an error message.
As per the guides and metalink documents, the way to do this is by returning 'ERROR' . But even though I return an ERROR, it does not error out. Whether I return SUCCESS or ERROR , the behaviour is the same.
While creating the subscription function, for On Error , I selected, "Stop And Rollback ".
Is it possible to return errors from the subscription functions.
thanks
Satya

Answer 1

You shouldn't be passing ResultSet objects across the EJB layer.
Instead you should be passing data back and forth.
All of the data access code should be in one place in one class.
That class should open the connection, run the query, process/store the results of the query and then close the connection.
In this case you probably want to return a list of something to your jsp.
So your EJB call should be more like
public List<resultBean> check(String id){
  ResultSet rs = Statement.("select * from table1 where id=123");
  List resultList = new ArrayList();
  while (rs.next()){
    Bean myBean = new Bean();
    myBean.setProperty1(rs.getString("field1"));
    myBean.setProperty2(rs.getString("field2"));
    resultList.add(myBean);
  return resultList;
}