static void subscribe(int domain_id, int sample_count) { // --- Create participant --- // /* To customize the participant QoS, use * the configuration file USER_QOS_PROFILES.xml */ DDS.DomainParticipant participant = DDS.DomainParticipantFactory.get_instance().create_participant( domain_id, DDS.DomainParticipantFactory.PARTICIPANT_QOS_DEFAULT, null /* listener */, DDS.StatusMask.STATUS_MASK_NONE); if (participant == null) { shutdown(participant); throw new ApplicationException("create_participant error"); } // --- Create subscriber --- // /* To customize the subscriber QoS, use * the configuration file USER_QOS_PROFILES.xml */ DDS.Subscriber subscriber = participant.create_subscriber( DDS.DomainParticipant.SUBSCRIBER_QOS_DEFAULT, null /* listener */, DDS.StatusMask.STATUS_MASK_NONE); if (subscriber == null) { shutdown(participant); throw new ApplicationException("create_subscriber error"); } // --- Create topic --- // /* Register the type before creating the topic */ System.String type_name = market_dataTypeSupport.get_type_name(); try { market_dataTypeSupport.register_type( participant, type_name); } catch (DDS.Exception e) { Console.WriteLine("register_type error {0}", e); shutdown(participant); throw e; } /* To customize the topic QoS, use * the configuration file USER_QOS_PROFILES.xml */ DDS.Topic topic = participant.create_topic( "Example market_data", type_name, DDS.DomainParticipant.TOPIC_QOS_DEFAULT, null /* listener */, DDS.StatusMask.STATUS_MASK_NONE); if (topic == null) { shutdown(participant); throw new ApplicationException("create_topic error"); } /* Start changes for MultiChannel */ DDS.StringSeq expression_parameters = new DDS.StringSeq(1); DDS.ContentFilteredTopic filtered_topic = participant.create_contentfilteredtopic_with_filter( "Example market_data", topic, "Symbol MATCH 'A'", expression_parameters, DDS.DomainParticipant.STRINGMATCHFILTER_NAME); // --- Create reader --- // /* Create a data reader listener */ market_dataListener reader_listener = new market_dataListener(); /* To customize the data reader QoS, use * the configuration file USER_QOS_PROFILES.xml */ DDS.DataReader reader = subscriber.create_datareader( filtered_topic, DDS.Subscriber.DATAREADER_QOS_DEFAULT, reader_listener, DDS.StatusMask.STATUS_MASK_ALL); if (reader == null) { shutdown(participant); reader_listener = null; throw new ApplicationException("create_datareader error"); } // --- Wait for data --- // /* Main loop */ const System.Int32 receive_period = 4000; // milliseconds for (int count = 0; (sample_count == 0) || (count < sample_count); ++count) { /* Console.WriteLine( * "market_data subscriber sleeping for {0} sec...", * receive_period / 1000); * * System.Threading.Thread.Sleep(receive_period); */ if (count == 3) { filtered_topic.append_to_expression_parameter(0, "D"); Console.WriteLine("changed filter to Symbol MATCH 'AD'"); } if (count == 6) { filtered_topic.remove_from_expression_parameter(0, "A"); Console.WriteLine("changed filter to Symbol MATCH 'D'"); } System.Threading.Thread.Sleep(receive_period); } /* End changes for MultiChannel */ // --- Shutdown --- // /* Delete all entities */ shutdown(participant); reader_listener = null; }
static void subscribe( int domain_id, int sample_count ) { // --- Create participant --- // /* To customize the participant QoS, use the configuration file USER_QOS_PROFILES.xml */ DDS.DomainParticipant participant = DDS.DomainParticipantFactory.get_instance().create_participant( domain_id, DDS.DomainParticipantFactory.PARTICIPANT_QOS_DEFAULT, null /* listener */, DDS.StatusMask.STATUS_MASK_NONE); if (participant == null) { shutdown(participant); throw new ApplicationException("create_participant error"); } // --- Create subscriber --- // /* To customize the subscriber QoS, use the configuration file USER_QOS_PROFILES.xml */ DDS.Subscriber subscriber = participant.create_subscriber( DDS.DomainParticipant.SUBSCRIBER_QOS_DEFAULT, null /* listener */, DDS.StatusMask.STATUS_MASK_NONE); if (subscriber == null) { shutdown(participant); throw new ApplicationException("create_subscriber error"); } // --- Create topic --- // /* Register the type before creating the topic */ System.String type_name = market_dataTypeSupport.get_type_name(); try { market_dataTypeSupport.register_type( participant, type_name); } catch (DDS.Exception e) { Console.WriteLine("register_type error {0}", e); shutdown(participant); throw e; } /* To customize the topic QoS, use the configuration file USER_QOS_PROFILES.xml */ DDS.Topic topic = participant.create_topic( "Example market_data", type_name, DDS.DomainParticipant.TOPIC_QOS_DEFAULT, null /* listener */, DDS.StatusMask.STATUS_MASK_NONE); if (topic == null) { shutdown(participant); throw new ApplicationException("create_topic error"); } /* Start changes for MultiChannel */ DDS.StringSeq expression_parameters = new DDS.StringSeq(1); DDS.ContentFilteredTopic filtered_topic = participant.create_contentfilteredtopic_with_filter( "Example market_data", topic, "Symbol MATCH 'A'", expression_parameters, DDS.DomainParticipant.STRINGMATCHFILTER_NAME); // --- Create reader --- // /* Create a data reader listener */ market_dataListener reader_listener = new market_dataListener(); /* To customize the data reader QoS, use the configuration file USER_QOS_PROFILES.xml */ DDS.DataReader reader = subscriber.create_datareader( filtered_topic, DDS.Subscriber.DATAREADER_QOS_DEFAULT, reader_listener, DDS.StatusMask.STATUS_MASK_ALL); if (reader == null) { shutdown(participant); reader_listener = null; throw new ApplicationException("create_datareader error"); } // --- Wait for data --- // /* Main loop */ const System.Int32 receive_period = 4000; // milliseconds for (int count = 0; (sample_count == 0) || (count < sample_count); ++count) { /* Console.WriteLine( * "market_data subscriber sleeping for {0} sec...", * receive_period / 1000); * * System.Threading.Thread.Sleep(receive_period); */ if (count == 3) { filtered_topic.append_to_expression_parameter(0, "D"); Console.WriteLine("changed filter to Symbol MATCH 'AD'"); } if (count == 6) { filtered_topic.remove_from_expression_parameter(0, "A"); Console.WriteLine("changed filter to Symbol MATCH 'D'"); } System.Threading.Thread.Sleep(receive_period); } /* End changes for MultiChannel */ // --- Shutdown --- // /* Delete all entities */ shutdown(participant); reader_listener = null; }