/* */package com.sun.j2ee.workflow.control.actions;import com.sun.j2ee.workflow.control.exceptions.WorkflowActionException;import java.util.HashMap;import javax.servlet.ServletContext;import javax.servlet.http.HttpSession;import javax.servlet.http.HttpServletRequest;/** This class is the base interface to request handlers on the * web tier. * @author */public interface ActionHandler extends java.io.Serializable {    public void setServletContext(ServletContext context);    public void setServletRequest(HttpServletRequest request);    public void doStart();    public void perform(HashMap event) throws WorkflowActionException;    public void doEnd();}