or in the
Publish/Subscribe Real-time CORBA Stock Quoter Service. <P>

<li><h4>Defining the IDL exception</h4></li>

<PRE>
exception Invalid_Subscription {};
</PRE>

This exception is used when the needed cookie does not exist in the stock subscribers list. <P>

<li><h4>Defining the IDL interfaces</h4></li>

<PRE>
interface StockDistributor : Trigger
{
  /// Event source operation to establish connectivity.
  Cookie subscribe_notifier (in Stock::StockNameConsumer c, in RTCORBA::Priority priority);

  /// Ev