xworkexecutor.java

osworkflow修改版本

/*
 * 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.WorkflowException;

import com.opensymphony.xwork.ActionContext;
import com.opensymphony.xwork.ActionProxy;
import com.opensymphony.xwork.ActionProxyFactory;

import java.util.Collections;
import java.util.HashMap;
import java.util.Locale;
import java.util.Map;


/**
 * Executes an XWork function.
 * The following conversion is done:
 * <ul>
 *  <li>inputs -> ActionContext#parameters</li>
 *  <li>variables -> ActionContext#session</li>
 *  <li>args -> ActionContext#application</li>
 * </ul>
 * <p>
 *
 * <ul>
 *  <li><b>action.name</b> - the actionName to ask from the ActionProxy</li>
 *  <li><b>namespace</b> - the namespace to ask from the ActionProxy</li>
 * </ul>
 */
public class XWorkExecutor implements FunctionProvider {
    //~ Methods ////////////////////////////////////////////////////////////////

    public void execute(Map transientVars, Map args, PropertySet ps) throws WorkflowException {
        String actionName = (String) args.get("action.name");
        String namespace = (String) args.get("namespace");

        Map extraContext = new HashMap();
        extraContext.put(ActionContext.APPLICATION, args);
        extraContext.put(ActionContext.SESSION, ps.getProperties(""));
        extraContext.put(ActionContext.LOCALE, Locale.getDefault());

        Map params = new HashMap(transientVars);
        params.putAll(args);
        extraContext.put(ActionContext.PARAMETERS, Collections.unmodifiableMap(params));

        try {
            ActionProxy proxy = ActionProxyFactory.getFactory().createActionProxy(namespace, actionName, extraContext, false);
            proxy.execute();
        } catch (Exception e) {
            throw new WorkflowException("Could not execute action " + actionName, e);
        }
    }
}