compositebestforcustomerpricingstrategy.java

网上购物系统,实现了一个具体的框架

/**
 * @name CompositeBestForCustomerPricingStrategy.java
 * @author Administrator/pan
 * @version 1.1
 * @date 2009/2/16
 */
package com.digitstore.process.server.sale;

import sun.text.CompactShortArray.Iterator;

import com.digitstore.process.sale.Sale;

public class CompositeBestForCustomerPricingStrategy extends
		CompositePricingStrategy {

	@Override
	public double getTotal(Sale sale) {
		double lowestTotal = 0;
		for(java.util.Iterator<ISalePricingStrategy> i = pricingStrategies.iterator(); i.hasNext();){
			ISalePricingStrategy strategy =
				                (ISalePricingStrategy)i.next();
			double total = strategy.getTotal(sale);
			if(total <= lowestTotal){
			lowestTotal = total;
			}
		}
		return lowestTotal;
	}

}