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/* -*- C++ -*- */
// $Id$
//
// ============================================================================
//
// = LIBRARY
// ORBSVCS Real-time Event Channel
//
// = FILENAME
// EC_Filter_Builder
//
// = AUTHOR
// Carlos O'Ryan (coryan@cs.wustl.edu)
//
// = DESCRIPTION
// The creation of a builder hierarchy is controlled by a
// Filter_Builder. The relationship between TAO_EC_Filter and
// TAO_EC_Filter_Builder follows the "Builder Pattern" (Gamma et
// al.)
//
// = 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_FILTER_BUILDER_H
#define TAO_EC_FILTER_BUILDER_H
#include "orbsvcs/RtecEventChannelAdmin.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
class TAO_EC_Filter_Builder
{
// = TITLE
// Abstract base class for the filter builders.
//
// = DESCRIPTION
// Defines the filter builder interface.
//
public:
virtual ~TAO_EC_Filter_Builder (void);
// destructor...
TAO_EC_Filter* build (RtecEventChannelAdmin::ConsumerQOS& qos) const
= 0;
// Create the filter, the caller must assume ownership of the filter
// returned.
};
// ****************************************************************
class TAO_EC_Default_Filter_Builder
{
// = TITLE
// A simple implementation of the filter builder.
//
// = DESCRIPTION
// Defines the default filter builder.
//
public:
TAO_EC_Default_Filter_Builder (void);
// constructor.
virtual ~TAO_EC_Default_Filter_Builder (void);
// destructor...
// = The TAO_EC_Filter_Builder methods...
TAO_EC_Filter* build (RtecEventChannelAdmin::ConsumerQOS& qos) const;
};
// ****************************************************************
#if defined (__ACE_INLINE__)
#include "EC_Filter_Builder.i"
#endif /* __ACE_INLINE__ */
#endif /* TAO_EC_FILTER_BUILDER_H */
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