desmoj.core.observer

Class SubjectAdministration<T,X>

java.lang.Object

desmoj.core.observer.SubjectAdministration<T,X>

Type Parameters:

T - Class of an possible Subject

X - Type of the Event which is passed in the update Method Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

public class SubjectAdministration<T,X>
extends java.lang.Object

Helper class for the subject interface to make the administration code reusable

Author:

Christian Mentz

Constructor Summary

Constructors

Constructor and Description
SubjectAdministration()

Method Summary

Modifier and Type	Method and Description
void	addObserver(Observer<T,X> observer) Adds an observer to the observer list
void	deleteObserver(Observer<T,X> observer) Deletes an observer from the observer list
void	notifyObservers(T subject, X eventObject) Notifies all registered observers and passes a reference of the subject and a eventtype to the observer

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SubjectAdministration

public SubjectAdministration()

Method Detail

addObserver

public void addObserver(Observer<T,X> observer)

Adds an observer to the observer list

Parameters:

observer - the observer to be added

deleteObserver

public void deleteObserver(Observer<T,X> observer)

Deletes an observer from the observer list

Parameters:

observer - the observer to be deleted

notifyObservers

public void notifyObservers(T subject,
                            X eventObject)

Notifies all registered observers and passes a reference of the subject and a eventtype to the observer

Parameters:

subject - the reference of the actual subject

eventObject - the event type of the notify call. This is optional to distinguish the events and can be null