asterstarpress.java

本书透彻讲解了经典的《设计模式：可复用面向对象软件的基础》一书涵盖的23种基本设计模式。本书将这些设计模式分成五类：接口型模式、责任型模式、构造型模式、操作型模式

package com.oozinoz.aster;

/*
 * Copyright (c) 2001 Steven J. Metsker.
 * 
 * Steve Metsker makes no representations or warranties about
 * the fitness of this software for any particular purpose, 
 * including the implied warranty of merchantability.
 *
 * Please use this software as you wish with the sole
 * restriction that you may not claim that you wrote it.
 */
/**
 * This class runs on the (fictional) Aster star press and 
 * aids communication with the factory in which the star press 
 * runs. In fact this class is a mock-up that shows how
 * a client might supply a template method.
 * <p>
 * The "Template Method" chapter in "The Design Patterns
 * Java Workbook" describes this class.
 * 
 * @author Steven J. Metsker
 */
public abstract class AsterStarPress 
{
	private int currentMoldID;

/**
 * Extrude all of the chemical paste (used for firework
 * stars) to waste area.
 */
public void dischargePaste()
{
}
/**
 * Spray water over the processing and discharge areas,
 * keeping the press from getting gunky.
 */
public void flush()
{
}
/**
 * Return true if the machine is processing a mold.
 *
 * @return true if the machine is processing a mold
 */
public boolean inProcess()
{
	return false;
}
/**
 * Start up a little server for an Aster star press.
 */
public static void main(String[] args)
{
}
/**
 * Subclasses have to fill in how the host factory can
 * deal with the problem of an incompletely processed
 * mold.
 */
public abstract void markMoldIncomplete(int id);
/**
 * Stop processing, mark the current mold as incomplete,
 * move off all molds, discharge any prepared paste, and
 * flush the processing area with water.
 */
public void shutDown()
{
	if (inProcess())
	{
		stopProcessing();
		markMoldIncomplete(currentMoldID);
	}
	usherInputMolds();
	dischargePaste();
	flush();
}
/**
 * Stop the processing subassembly.
 */
public void stopProcessing()
{
}
/**
 * Move all molds to the output conveyor.
 */
public void usherInputMolds()
{
}
}