private Set<CDORemoteSession> sendMessage(
CDORemoteSessionMessage message, Iterator<CDORemoteSession> recipients) {
List<CDORemoteSession> subscribed = new ArrayList<CDORemoteSession>();
while (recipients.hasNext()) {
CDORemoteSession recipient = recipients.next();
if (recipient.isSubscribed()) {
subscribed.add(recipient);
}
}
if (subscribed.isEmpty()) {
return Collections.emptySet();
}
Set<Integer> sessionIDs =
localSession.getSessionProtocol().sendRemoteMessage(message, subscribed);
Set<CDORemoteSession> result = new HashSet<CDORemoteSession>();
for (CDORemoteSession recipient : subscribed) {
if (sessionIDs.contains(recipient.getSessionID())) {
result.add(recipient);
}
}
return result;
}
public CDORemoteSession[] getRemoteSessions() {
synchronized (this) {
if (subscribed) {
Collection<CDORemoteSession> values = remoteSessions.values();
return values.toArray(new CDORemoteSession[values.size()]);
}
List<CDORemoteSession> loadedRemoteSessions =
localSession.getSessionProtocol().getRemoteSessions(this, false);
return loadedRemoteSessions.toArray(new CDORemoteSession[loadedRemoteSessions.size()]);
}
}
/** Needs to be synchronized externally. */
private IEvent[] subscribe() {
List<CDORemoteSession> result = localSession.getSessionProtocol().getRemoteSessions(this, true);
ContainerEvent<CDORemoteSession> event = new ContainerEvent<CDORemoteSession>(this);
for (CDORemoteSession remoteSession : result) {
remoteSessions.put(remoteSession.getSessionID(), remoteSession);
event.addDelta(remoteSession, IContainerDelta.Kind.ADDED);
}
subscribed = true;
IEvent[] events = {new LocalSubscriptionChangedEventImpl(true), event.isEmpty() ? null : event};
return events;
}
/** Needs to be synchronized externally. */
private IEvent[] unsubscribe() {
localSession.getSessionProtocol().unsubscribeRemoteSessions();
ContainerEvent<CDORemoteSession> event = new ContainerEvent<CDORemoteSession>(this);
for (CDORemoteSession remoteSession : remoteSessions.values()) {
event.addDelta(remoteSession, IContainerDelta.Kind.REMOVED);
}
remoteSessions.clear();
subscribed = false;
IEvent[] events = {
new LocalSubscriptionChangedEventImpl(false), event.isEmpty() ? null : event
};
return events;
}