basebizlogichandler.java

以前做的一个j2ee的项目

package gov.gdlt.ssgly.taxcore.comm.blh;

import gov.gdlt.ssgly.taxcore.comm.event.RequestEvent;
import gov.gdlt.ssgly.taxcore.comm.event.ResponseEvent;
import gov.gdlt.ssgly.taxcore.comm.exception.TaxBaseSystemException;
import gov.gdlt.ssgly.taxcore.comm.exception.TaxBaseBizException;

/**
 * <p>Title: BaseBizLogicHandler</p>
 * <p>Description: 税收管理员系统</p>
 * <p>Copyright: Copyright (c) 2005 广州市地方税务局</p>
 * <p>Company: 信息中心</p>
 * since 2005.08.08.
 */

public abstract class BaseBizLogicHandler implements IBizLogicHandler {

    public BaseBizLogicHandler() {

    }

    protected abstract ResponseEvent performTask(RequestEvent req) throws
            TaxBaseBizException, TaxBaseSystemException;

    protected abstract ResponseEvent validateData(RequestEvent req) throws
            Exception;

    public final ResponseEvent execute(RequestEvent req) throws
            Exception {
        ResponseEvent respEvent = null;

        // validate request data
        respEvent = this.validateData(req);
        if (respEvent != null && (!respEvent.getRepCode().equals("0"))) {
            return respEvent;
        }

        // process request data
        respEvent = this.performTask(req);

        return respEvent;
    }
}