de.alpharogroup.design.pattern.observer.api

Interface Subject<T,O extends Observer<T>>

Type Parameters:

T - the generic type of the observable.

O - the generic type of the observer

All Known Implementing Classes:

AbstractSubject, ChatRoom

public interface Subject<T,O extends Observer<T>>

The interface Subject.

Method Summary

Modifier and Type	Method and Description
void	add(O observer) Adds the given observer.
void	addAll(Collection<O> observers) Adds the given observers.
T	getObservable() Gets the observable.
void	remove(O observer) Removes the given observer.
void	removeAll(Collection<O> observers) Removes the given observers.
void	setObservable(T observable) Sets the observable.
void	updateObservers() Update observers.

Method Detail

add

void add(O observer)

Adds the given observer.

Parameters:

observer - the observer to be added.

remove

void remove(O observer)

Removes the given observer.

Parameters:

observer - the observer to be remove.

addAll

void addAll(Collection<O> observers)

Adds the given observers.

Parameters:

observers - the observers to be added.

removeAll

void removeAll(Collection<O> observers)

Removes the given observers.

Parameters:

observers - the observers to be remove.

updateObservers

void updateObservers()

Update observers.

getObservable

T getObservable()

Gets the observable.

Returns:

the observable

setObservable

void setObservable(T observable)

Sets the observable.

Parameters:

observable - the new observable