#ifndef COS_EVENTCOMM_IDL
#define COS_EVENTCOMM_IDL
 
/**
 * CORBA Common Object Services: Event Service.
 * <p>
 * The detailed specification is available from the
 * <a href="http://www.omg.org">Object Managament Group</a>.
 *
 * @author OMG
 * @version Version 1.0
 */

#pragma prefix "omg.org"

module CosEventComm
{
   /**
    * Exception indicating that a supplier or consumer is disconnected.
    */
   exception Disconnected {};

   /**
    * Interface for a push consumer.
    */
   interface PushConsumer
   {
      /**
       * Push an event onto this consumer.
       * @parm <code>data</code> - The event data.
       * @raises Disconnected If this consumer is disconnected.
       */
      void push (in any data) raises (Disconnected);

      /**
       * Disconnect a push consumer.
       */
      void disconnect_push_consumer (); 
   };

   /**
    * Interface for a push supplier.
    */
   interface PushSupplier
   {      
      /**
       * Disconnect a push supplier.
       */
      void disconnect_push_supplier ();
   };

   /**
    * Interface for a pull supplier.
    */
   interface PullSupplier
   {    
      /**
       * Pull an event from this supplier
       * @returns The event.
       * @raises Disconnected If this supplier is disconnected.
       */
      any pull () raises (Disconnected);
    
      /**
       * Try to pull an event from this supplier.
       * @parm <code>has_event</code> - boolean indicating if supplier
       * has an event.
       * @returns The event if <code>has_event</code> is true.
       * @raises Disconnected If this supplier is disconnected.
       */
      any try_pull (out boolean has_event) raises (Disconnected);      

      /**
       * Disconnect a pull supplier.
       */
      void disconnect_pull_supplier (); 
   };

   /**
    * Interface for a pull consumer.
    */
   interface PullConsumer
   {
      /**
       * Disconnect a pull consumer.
       */
      void disconnect_pull_consumer ();
   };
};

#endif /* COS_EVENTCOMM_IDL */