枚举的另一种使用

sunxboy

枚举类型一般属性的值为常量，不可动态的变化。
由于系统需要，配置信息是写在数量库中的，在加载系统时，需要读入配置信息去填充枚举类型属性。
故想出这种办法，共享之。
/*************************************************  Copyright (C), 2008-2009, Sunsoft Team Tech. Co., Ltd.  File name:           TradeState.java  Author:   sunbeam    Version:  1.0      Date: 2008-11-5  Description:           Others:           Function List:             History:                 *************************************************/package com.sztelecom.vbao.enumer;import com.sztelecom.vbao.exception.ServiceException;import com.sztelecom.vbao.service.CommonParmeterService;/** * 交易状态 * @author sunbeam * @version 1.0 * @Date 2008-11-5 */public enum TradeState {WAIT_PAY("TRADE_STATE_WAIT_PAY"), // 等待付款HAS_CREATED("TRADE_STATE_HAS_CREATED"), // 交易已创建WAIT_SEND_GOODS("TRADE_STATE_WAIT_SEND_GOODS"), // 等待卖家发货WAIT_CFM_GOODS("TRADE_STATE_WAIT_CFM_GOODS"), // 等待买家确认收货FINISHED("TRADE_STATE_FINISHED"), // 交易已完成CLOSED("TRADE_STATE_CLOSED"), // 交易已关闭WAIT_DEAL_REFUND("TRADE_STATE_WAIT_DEAL_REFUND");// 等待处理退款private String status;static String wait_pay;static String has_created;static String wait_send_goods;static String wait_cfm_goods;static String finished;static String closed;static String wait_deal_refund;private TradeState(String status) {this.status = status;}public void init(CommonParmeterService cps) throws ServiceException {if (wait_pay == null)wait_pay = cps.queryTradeState(WAIT_PAY.getStatus());if (has_created == null)has_created = cps.queryTradeState(HAS_CREATED.getStatus());if (wait_send_goods == null)wait_send_goods = cps.queryTradeState(WAIT_SEND_GOODS.getStatus());if (wait_cfm_goods == null)wait_cfm_goods = cps.queryTradeState(WAIT_CFM_GOODS.getStatus());if (finished == null)finished = cps.queryTradeState(FINISHED.getStatus());if (closed == null)closed = cps.queryTradeState(CLOSED.getStatus());if (wait_deal_refund == null)wait_deal_refund = cps.queryTradeState(WAIT_DEAL_REFUND.getStatus());}public String toString() {super.toString();switch (this) {case WAIT_PAY:return wait_pay;case HAS_CREATED:return has_created;case WAIT_SEND_GOODS:return wait_send_goods;case WAIT_CFM_GOODS:return wait_cfm_goods;case FINISHED:return finished;case CLOSED:return closed;case WAIT_DEAL_REFUND:return wait_deal_refund;default:return "";}}public String getStatus() {return status;}public void setStatus(String status) {this.status = status;}}