package com.huiton.mainframe.control.web.handlers;import com.huiton.cerp.pub.util.*;import com.huiton.cerp.pub.util.functions.*;import com.huiton.mainframe.control.event.CERPEvent;import com.huiton.mainframe.control.exceptions.DuplicateRecordException;import com.huiton.mainframe.control.web.CustomerWebImpl;import com.huiton.mainframe.control.web.ModelManager;import com.huiton.mainframe.control.web.handlers.RequestHandlerSupport;import com.huiton.mainframe.util.tracer.Debug;import com.huiton.pub.dbx.*;import java.sql.*;import java.util.ArrayList;import java.util.Vector;import javax.servlet.ServletRequest;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpSession;public class ExitHandler extends RequestHandlerSupport{    public ExitHandler()    {    }    public CERPEvent processRequest(HttpServletRequest request)        throws Exception, DuplicateRecordException, SQLException    {        Debug.println("----ExitHandler: processRequest()");        HttpSession session = request.getSession();        ModelManager mm = (ModelManager)session.getAttribute("mm");        if (mm == null)  return null;        CustomerWebImpl customer = mm.getCustomerWebImpl();        if (customer==null) return null ;        if (!customer.isLoggedIn()) return null ;        String companyCode = customer.getCompanyCode();        String sessionCode = customer.getSessionCode();        CerpSAM cs = new CerpSAM();        cs.logout(companyCode,sessionCode);        session.invalidate();        return null;    }}