Publicly exposed Signal in alljoyn

Question

I am trying to create an application witch will announce the signal through all the bus. The idea that you do not need to connect to particular object in the bus. I saw that interfaces could be Introspectable, but as I found this interfaces automatically added to bus object when it is registering on bus. So the question is how to make signal visible in the bus.

Interface:

@BusInterface(name = Door.DOOR_INTF_NAME, announced = "true")
public interface Door {

    String DOOR_INTF_NAME = "com.example.Door";
    String PERSON_PASSED_THROUGH = "PersonPassedThrough";

    @BusSignal(name = PERSON_PASSED_THROUGH, sessionless = true)
    void personPassedThrough(String person) throws BusException;
}

publushing:

private void doRegisterBusObject(Object obj) {
    LocatableBusObject object = (LocatableBusObject) obj;
    String location = object.getBusObjectLocation();
    if (!location.startsWith("/")) {
        location = "/" + location;
    }
    // Register the object on the local bus
    Status status = bus.registerBusObject(object, location);
    if (Status.OK != status) {
        return;
    }
    // Have About send a signal a new door is available.
    aboutObj.announce(CONTACT_PORT, aboutData);
}

The object is visible, but signal is not.

Answer 1

Basically, the interface org.allseen.Introspectable is added by the router, only in case when we announce description for the @BusInterface.

Until then, we will not have this interface.