56 lines
1.7 KiB
Java
56 lines
1.7 KiB
Java
/*
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File: InfoObserver.java
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University of Applied Science Berne,HTA-Biel/Bienne,
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Computer Science Department.
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Diploma thesis J3D Solar System Simulator
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Originally written by Marcel Portner & Bernhard Hari (c) 2000
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CVS - Information :
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$Header: /var/cvsreps/projects/c450/2000/sss3d/source_diploma/sss3d/utils/observer/InfoObserver.java,v 1.4 2000/12/13 13:42:03 portm Exp $
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$Author: portm $
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$Date: 2000/12/13 13:42:03 $
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$State: Exp $
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*/
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package sss3d.utils.observer;
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import sss3d.contentbranch.*;
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/**
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* The interface InfoObserver is part of the information observer - defined
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* by the observer pattern.
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* References : E.Gamma; Design Patterns ISBN 0-201-63361-2, Addison Wesley, 1995<br>
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* It defines an updating interface for objects that should be notified of changes
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* in a ObjectInfo.
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* @author Marcel Portner & Bernhard Hari
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* @version $Revision: 1.4 $
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* @see ObjectInfo
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* @see ObjectsInformation
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*/
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public interface InfoObserver {
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/**
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* The update methode is used to keep the state of the concrete observer
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* consistent with the state of the ObjectInfo.<br>
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*
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* @param objInfo a reference to the ObjectInfo
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* @param id the id of the concrete object that has to be updated
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*/
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void update(String id, int parameter);
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/**
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* Returns the id of the concrete observer.
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*
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* @return String the id of the concrete observer
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*/
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String getId();
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/**
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* Returns the information object from the concrete observer.
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*
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* @return CelestialObjectInfo the info object from the concrete observer
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*/
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CelestialObjectInfo getInfo();
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}
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