Features > ActiveMQ Real Time > Group Membership
ActiveBlaze supports group membership using a GroupChannel - which can be created from a GroupChannelFactory. You have to explicitly say which group you want to join/leave - and you can join multiple groups. Each GroupChannel has both a globally unique id and a name.
import org.apache.activeblaze.group.*;
...
BlazeGroupChannelFactory factory = new BlazeGroupChannelFactory();
BlazeGroupChannel channel = factory.createGroupChannel("My Channel");
//join a group
channel.addToGroup("test");
channel.start();
//listen for other members
channel.addMemberChangedListener(new MemberChangedListener(){
public void memberStarted(Member member) {
System.out.println("Member started");
}
public void memberStopped(Member member) {
System.out.println("Member stopped");
}
});