/* * Copyright (c) 2002-2003 by OpenSymphony * All rights reserved. */package com.opensymphony.workflow.util;import com.opensymphony.module.propertyset.PropertySet;import com.opensymphony.workflow.FunctionProvider;import com.opensymphony.workflow.WorkflowContext;import java.util.Map;/** * Sets the transient variable "caller" to the current user executing an action. * * @author <a href="mailto:plightbo@hotmail.com">Pat Lightbody</a> * @version $Revision: 1.4 $ */public class Caller implements FunctionProvider {    //~ Methods ////////////////////////////////////////////////////////////////    public void execute(Map transientVars, Map args, PropertySet ps) {        WorkflowContext context = (WorkflowContext) transientVars.get("context");        transientVars.put("caller", context.getCaller());    }}