source: source/ariba/utility/misc/Demultiplexer.hpp@ 2440

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#ifndef DEMULTIPLEXER_H__
#define DEMULTIPLEXER_H__

#include <list>
#include <map>
#include <boost/thread/mutex.hpp>
#include <boost/foreach.hpp>
#include "ariba/utility/messages/Message.h"

using std::list;
using std::map;
using std::pair;
using ariba::utility::Message;

namespace ariba {
namespace utility {

template<typename S, typename T>
class Demultiplexer
{
private:

        typedef map<S,T>                                        SERVICE_LISTENER_MAP;
        typedef pair<S,T>                                       SERVICE_LISTENER_PAIR;
        typedef typename SERVICE_LISTENER_MAP::iterator         SERVICE_LISTENER_MAP_ITERATOR;
        typedef typename SERVICE_LISTENER_MAP::const_iterator   SERVICE_LISTENER_MAP_CITERATOR;

        typedef map<T,S>                                        LISTENER_SERVICE_MAP;
        typedef pair<T,S>                                       LISTENER_SERVICE_PAIR;
        typedef typename LISTENER_SERVICE_MAP::iterator         LISTENER_SERVICE_MAP_ITERATOR;
        typedef typename LISTENER_SERVICE_MAP::const_iterator   LISTENER_SERVICE_MAP_CITERATOR;

        SERVICE_LISTENER_MAP                                    mapServiceListener;
        LISTENER_SERVICE_MAP                                    mapListenerService;
        boost::mutex                                            mapMutex;

public:

        Demultiplexer() {
        }

        ~Demultiplexer() {
        }

        void registerItem( S id, T listener ) {
                boost::mutex::scoped_lock lock( mapMutex );
                {
                        mapServiceListener.insert( SERVICE_LISTENER_PAIR( id, listener ) );
                        mapListenerService.insert( LISTENER_SERVICE_PAIR( listener, id ) );
                }
        }

        void unregisterItem( S id) {
                T listener = get( id );

                boost::mutex::scoped_lock lock( mapMutex );
                {
                        mapServiceListener.erase( id );
                        mapListenerService.erase( listener );
                }
        }

        void unregisterItem( T listener ) {
                S id = get (listener);
                unregisterItem( id );
        }

        S get( T listener ) {
                boost::mutex::scoped_lock lock( mapMutex );
                {
                        LISTENER_SERVICE_MAP_CITERATOR it = mapListenerService.find( listener );
                        return it->second;
                }
        }

        T get( S id ) {
                boost::mutex::scoped_lock lock( mapMutex );
                {
                        SERVICE_LISTENER_MAP_CITERATOR it = mapServiceListener.find( id );

                        if( it == mapServiceListener.end() )    return NULL;
                        else                                    return it->second;
                }
        }

        bool contains( T listener ) {
                boost::mutex::scoped_lock lock( mapMutex );
                {
                        LISTENER_SERVICE_MAP_CITERATOR it = mapListenerService.find( listener );
                        return ( it != mapListenerService.end() );
                }
        }

        bool contains( S id ) {
                boost::mutex::scoped_lock lock( mapMutex );
                {
                        SERVICE_LISTENER_MAP_CITERATOR it = mapServiceListener.find( id );
                        return ( it != mapServiceListener.end() );
                }
        }

        typedef list<S> OneList;
        typedef list<T> TwoList;

        OneList getOneList() const {
                OneList ret;

                BOOST_FOREACH( SERVICE_LISTENER_PAIR i, mapServiceListener ){
                        ret.push_back( i.first );
                }

                return ret;
        }

        TwoList getTwoList() const {
                TwoList ret;

                BOOST_FOREACH( SERVICE_LISTENER_PAIR  i, mapServiceListener ){
                        ret.push_back( i.first );
                }

                return ret;
        }

};

}} // namespace ariba, common

#endif // DEMULTIPLEXER_H__