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