/**
* Makes the Subscriber subscribe to data that is published in the Partitions that match the
* supplied expression. Remember that the Partitions must have been created within the Participant
* of this Subscriber prior to calling this function.
*
* @param expression The partition expression to apply.
* @throws CMException Thrown when Subscriber has already been freed or when publish failed.
*/
public void subscribe(String expression) throws CMException {
if (this.isFreed()) {
throw new CMException("Subscriber already freed.");
}
try {
CMFactory.getCommunicator().subscriberSubscribe(this, expression);
} catch (CommunicationException e) {
throw new CMException("subscribe failed for: " + expression);
}
}
public void setQoS(QoS qos) throws CMException {
if (freed) {
throw new CMException("Supplied entity is not available (anymore).");
} else if (qos instanceof SubscriberQoS) {
try {
CMFactory.getCommunicator().entitySetQoS(this, qos);
} catch (CommunicationException ce) {
throw new CMException(ce.getMessage());
}
} else {
throw new CMException("Supplied entity requires a SubscriberQoS.");
}
}
/**
* Creates a new Subscriber from the supplied arguments. The Subscriber is owned by the caller of
* this constructor.
*
* @param participant The Participant to create the Subscriber in.
* @param name The name of the Subscriber.
* @param qos The quality of service to apply to the Subscriber.
* @throws CMException Thrown when Subscriber could not be created.
*/
public SubscriberImpl(ParticipantImpl participant, String name, SubscriberQoS qos)
throws CMException {
super(0, 0, "", "");
owner = true;
SubscriberImpl s;
try {
s = (SubscriberImpl) CMFactory.getCommunicator().subscriberNew(participant, name, qos);
} catch (CommunicationException e) {
throw new CMException(e.getMessage());
}
if (s == null) {
throw new CMException("Subscriber could not be created.");
}
this.index = s.index;
this.serial = s.serial;
this.name = s.name;
this.pointer = s.pointer;
this.enabled = s.enabled;
s.freed = true;
}
