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/* -*- C++ -*- */
// $Id$
//
// ============================================================================
//
// = LIBRARY
// ORBSVCS Real-time Event Channel
//
// = FILENAME
// EC_Per_Supplier_Filter
//
// = AUTHOR
// Carlos O'Ryan (coryan@cs.wustl.edu)
//
// = CREDITS
// Based on previous work by Tim Harrison (harrison@cs.wustl.edu)
// and other members of the DOC group.
// More details can be found in:
// http://www.cs.wustl.edu/~schmidt/oopsla.ps.gz
// http://www.cs.wustl.edu/~schmidt/JSAC-98.ps.gz
//
//
// ============================================================================
#ifndef TAO_EC_PER_SUPPLIER_FILTER_H
#define TAO_EC_PER_SUPPLIER_FILTER_H
#include "EC_SupplierFiltering.h"
#include "EC_Supplier_Filter_Builder.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
class TAO_EC_ProxyPushSupplier_Set;
class TAO_ORBSVCS_Export TAO_EC_Per_Supplier_Filter : public TAO_EC_SupplierFiltering
{
// = TITLE
// Filter the events on each supplier.
//
// = DESCRIPTION
// This is a filtering strategy for the suppliers. In this
// particular case we keep a collection of the consumers that
// could potentially be interested in any event generated by a
// particular supplier.
// This minimizes the amount of consumers touched by the EC when
// dispatching an event.
//
public:
TAO_EC_Per_Supplier_Filter (TAO_EC_Event_Channel* ec);
// Constructor
virtual ~TAO_EC_Per_Supplier_Filter (void);
// Destructor
// = The TAO_EC_SupplierFiltering methods.
virtual void bind (TAO_EC_ProxyPushConsumer* consumer);
virtual void unbind (TAO_EC_ProxyPushConsumer* consumer);
virtual void connected (TAO_EC_ProxyPushSupplier* supplier,
CORBA::Environment &env);
virtual void disconnected (TAO_EC_ProxyPushSupplier* supplier,
CORBA::Environment &env);
virtual void shutdown (CORBA::Environment &env);
virtual void push (const RtecEventComm::EventSet& event,
CORBA::Environment &);
virtual CORBA::ULong _decr_refcnt (void);
virtual CORBA::ULong _incr_refcnt (void);
private:
TAO_EC_Event_Channel *event_channel_;
// The event channel, used to locate the set of consumers.
TAO_EC_ProxyPushConsumer* consumer_;
// The proxy for the supplier we are bound to.
TAO_EC_ProxyPushSupplier_Set* supplier_set_;
// Keep the list of proxies for the consumers that may be interested
// in our events.
CORBA::ULong refcnt_;
// Reference counting
};
// ****************************************************************
class TAO_ORBSVCS_Export TAO_EC_Per_Supplier_Filter_Builder : public TAO_EC_Supplier_Filter_Builder
{
// = TITLE
// Create Per_Supplier_Filter objects
//
// = DESCRIPTION
//
public:
TAO_EC_Per_Supplier_Filter_Builder (TAO_EC_Event_Channel* ec);
// constructor....
// = The TAO_EC_Supplier_Filter_Builder methods...
virtual TAO_EC_SupplierFiltering*
create (RtecEventChannelAdmin::SupplierQOS& qos);
virtual void
destroy (TAO_EC_SupplierFiltering *filter);
private:
TAO_EC_Event_Channel* event_channel_;
// The event channel
};
#if defined (__ACE_INLINE__)
#include "EC_Per_Supplier_Filter.i"
#endif /* __ACE_INLINE__ */
#endif /* TAO_EC_PER_SUPPLIER_FILTER_H */
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