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;
}
