frysk.proc
Class Observation

java.lang.Object
  frysk.proc.Observation

All Implemented Interfaces:

Event

Direct Known Subclasses:

TaskObservation

public abstract class Observation
extends Object
implements Event

The binding between an Observer and its Observable.

Field Summary

protected Observable	observable
protected Observer	observer

Constructor Summary

protected

Observation(Observable observable, Observer observer) Create a new Observer binding.

Method Summary

boolean	equals(Object o) Returns true if the Object's Observable:Observer binding is identical to this one.
void	fail(Throwable w) Tell the observer that the add is failing with w.
abstract void	handleAdd() Handle the addition of the Observer to the Observable.
abstract void	handleDelete() Handle the deletion of the Observer from the Observable.
int	hashCode() A somewhat arbitrary hash code.
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface frysk.event.Event

execute

Field Detail

observable

protected final Observable observable

observer

protected final Observer observer

Constructor Detail

Observation

protected Observation(Observable observable,
                      Observer observer)

Create a new Observer binding.

Method Detail

equals

public boolean equals(Object o)

Returns true if the Object's Observable:Observer binding is identical to this one.

Overrides:

equals in class Object

hashCode

public int hashCode()

A somewhat arbitrary hash code.

Overrides:

hashCode in class Object

fail

public void fail(Throwable w)

Tell the observer that the add is failing with w.

handleAdd

public abstract void handleAdd()

Handle the addition of the Observer to the Observable.

handleDelete

public abstract void handleDelete()

Handle the deletion of the Observer from the Observable.

toString

public String toString()

Overrides:

toString in class Object