ReadObjectQuery acts like a gambling machine

Hi there,
I figured out that a ReadObjectQuery acts like a gambling machine, when the underlying TopLink expression and SQL statement respectively, selects more than one row. In this case the ReadObjectQuery does not throw an exception and returns some object of the result set.
How can I force the ReadObjectQuery throwing an exception, if the result set has more than one object?
Thanks,
Leif Jakobsmeier

Leif,
There is an event on SessionEventListener that will notify you when a ReadObjectQuery returns more then one row.
http://download-west.oracle.com/docs/cd/B10464_01/web.904/b10491/oracle/toplink/sessions/SessionEventListener.html#moreRowsDetected(oracle.toplink.sessions.SessionEvent)
You can have your own exception thrown my simply implementing and registering an event listener to handle this.
Example:
session.getEventManager().addListener(new SessionEventAdapter() {
public void moreRowsDetected(SessionEvent event) {
throw new RuntimeException("More then one row returned from ReadObjectQuery");
Doug

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