/**
* Creates abstract DataReader for subscriber and topic
*
* @param subscriber DDS subscriber to attach reader
* @param topic Topic to read from
* @return DDS DataReader
* @throws IOException
*/
public DataReader createReader(final Subscriber subscriber, final Topic topic)
throws IOException {
final DataReader parentReader =
subscriber.create_datareader(
topic, Subscriber.DATAREADER_QOS_USE_TOPIC_QOS, null, StatusKind.STATUS_MASK_NONE);
if (parentReader == null) {
throw new IOException("Could not create DataReader");
}
return parentReader;
}
private static void subscriberMain(int domainId, int sampleCount) {
DomainParticipant participant = null;
Subscriber subscriber = null;
Topic topic = null;
DataReaderListener listener = null;
DoubleArrayDataDataReader reader = null;
try {
// --- Create participant --- //
/* To customize participant QoS, use
the configuration file
USER_QOS_PROFILES.xml */
participant =
DomainParticipantFactory.TheParticipantFactory.create_participant(
domainId,
DomainParticipantFactory.PARTICIPANT_QOS_DEFAULT,
null /* listener */,
StatusKind.STATUS_MASK_NONE);
if (participant == null) {
System.err.println("create_participant error\n");
return;
}
// --- Create subscriber --- //
/* To customize subscriber QoS, use
the configuration file USER_QOS_PROFILES.xml */
subscriber =
participant.create_subscriber(
DomainParticipant.SUBSCRIBER_QOS_DEFAULT,
null /* listener */,
StatusKind.STATUS_MASK_NONE);
if (subscriber == null) {
System.err.println("create_subscriber error\n");
return;
}
// --- Create topic --- //
/* Register type before creating topic */
String typeName = DoubleArrayDataTypeSupport.get_type_name();
DoubleArrayDataTypeSupport.register_type(participant, typeName);
/* To customize topic QoS, use
the configuration file USER_QOS_PROFILES.xml */
topic =
participant.create_topic(
"Example DoubleArrayData",
typeName,
DomainParticipant.TOPIC_QOS_DEFAULT,
null /* listener */,
StatusKind.STATUS_MASK_NONE);
if (topic == null) {
System.err.println("create_topic error\n");
return;
}
// --- Create reader --- //
listener = new DoubleArrayDataListener();
/* To customize data reader QoS, use
the configuration file USER_QOS_PROFILES.xml */
reader =
(DoubleArrayDataDataReader)
subscriber.create_datareader(
topic, Subscriber.DATAREADER_QOS_DEFAULT, listener, StatusKind.STATUS_MASK_ALL);
if (reader == null) {
System.err.println("create_datareader error\n");
return;
}
// --- Wait for data --- //
final long receivePeriodSec = 4;
for (int count = 0; (sampleCount == 0) || (count < sampleCount); ++count) {
System.out.println(
"DoubleArrayData subscriber sleeping for " + receivePeriodSec + " sec...");
try {
Thread.sleep(receivePeriodSec * 1000); // in millisec
} catch (InterruptedException ix) {
System.err.println("INTERRUPTED");
break;
}
}
} finally {
// --- Shutdown --- //
if (participant != null) {
participant.delete_contained_entities();
DomainParticipantFactory.TheParticipantFactory.delete_participant(participant);
}
/* RTI Data Distribution Service provides the finalize_instance()
method for users who want to release memory used by the
participant factory singleton. Uncomment the following block of
code for clean destruction of the participant factory
singleton. */
// DomainParticipantFactory.finalize_instance();
}
}