BillDb.java

package com.extensiblejava.bill.data;

import java.math.*;
import java.util.*;

public class BillDb {

	private static CustomerDataBean custBean;
	private static TreeMap billBeans;

	static {
		custBean = new CustomerDataBean(new Integer(1), "Sue", "Smith");
		BillDataBean billBean1 = new BillDataBean(new Integer(1), new Integer(1), "ONE", new BigDecimal("25.00"), null, null);
		BillDataBean billBean2 = new BillDataBean(new Integer(2), new Integer(1), "TWO", new BigDecimal("50.00"), null, null);
		BillDataBean billBean3 = new BillDataBean(new Integer(3), new Integer(1), "THREE", new BigDecimal("75.00"), null, null);
		BillDataBean billBean4 = new BillDataBean(new Integer(4), new Integer(1), "FOUR", new BigDecimal("100.00"), null, null);
		BillDataBean billBean5 = new BillDataBean(new Integer(5), new Integer(1), "FIVE", new BigDecimal("1000.00"), null, null);
		billBeans = new TreeMap();
		billBeans.put(billBean1.getBillId(), billBean1);
		billBeans.put(billBean2.getBillId(), billBean2);
		billBeans.put(billBean3.getBillId(), billBean3);
		billBeans.put(billBean4.getBillId(), billBean4);
		billBeans.put(billBean5.getBillId(), billBean5);
	}

	public static CustomerDataBean getCustomer(Integer custId) {
		return custBean;
	}

	public static Collection getBills(Integer custId) {
		return billBeans.values();
	}

	public static BillDataBean getBill(Integer billId) {
		return (BillDataBean) billBeans.get(billId);
	}

	public static void update(BillDataBean bean) {
		billBeans.put(bean.getBillId(), bean);
	}

}