net.metanotion.util.observers
Interface ObserverManager<O,M extends Message<O>>

All Known Implementing Classes:

ConcurrentObserverManager, SimpleObserverManager

public interface ObserverManager<O,M extends Message<O>>

This interface represents a common way to bulk send messages to any registered observers.

Method Summary

boolean	add(O observer) Register an Observer as a listener.
boolean	remove(O observer) Remove an Observer as a listener.
boolean	send(M message) Broadcast a message to all registered observers.

Method Detail

add

boolean add(O observer)

Register an Observer as a listener.

Parameters:

observer - Observer to start receiving messages.

Returns:

True if the observer was successfully registered, false otherwise.

remove

boolean remove(O observer)

Remove an Observer as a listener.

Parameters:

observer - Observer to remove

Returns:

True if the observer was successfully removed, false otherwise.

send

boolean send(M message)

Broadcast a message to all registered observers.

Parameters:

message - Message to send to observers.

Returns:

True if the message was queued, false otherwise