001package org.apache.turbine.services.jsonrpc;
002
003/*
004 * Licensed to the Apache Software Foundation (ASF) under one
005 * or more contributor license agreements.  See the NOTICE file
006 * distributed with this work for additional information
007 * regarding copyright ownership.  The ASF licenses this file
008 * to you under the Apache License, Version 2.0 (the
009 * "License"); you may not use this file except in compliance
010 * with the License.  You may obtain a copy of the License at
011 *
012 *   http://www.apache.org/licenses/LICENSE-2.0
013 *
014 * Unless required by applicable law or agreed to in writing,
015 * software distributed under the License is distributed on an
016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
017 * KIND, either express or implied.  See the License for the
018 * specific language governing permissions and limitations
019 * under the License.
020 */
021
022import java.io.CharArrayWriter;
023
024import javax.servlet.http.HttpServletRequest;
025import javax.servlet.http.HttpSession;
026
027import org.apache.turbine.services.TurbineBaseService;
028import org.jabsorb.JSONRPCBridge;
029
030
031/**
032 * This is a service that will respond to JSON-RPC calls.
033 *
034 * @author <a href="mailto:seade@backstagetech.com.au">Scott Eade</a>
035 * @version $Id$
036 */
037public class TurbineJsonRpcService
038        extends TurbineBaseService
039        implements JsonRpcService
040{
041    /** The key used to store the bridge in the session. */
042    public static final String JSON_BRIDGE_KEY = "JSONRPCBridge";
043
044    @Override
045    public Object processCall(CharArrayWriter cdata,
046            JSONRPCBridge json_bridge, HttpServletRequest request)
047    {
048        return JSONProcessor.processCall(cdata, json_bridge, request);
049    }
050
051    @Override
052    public void registerObjectGlobal(String key, Object value)
053    {
054        JSONRPCBridge.getGlobalBridge().registerObject(key, value);
055    }
056
057    @Override
058    public void registerObject(HttpSession session, String key, Object value)
059    {
060        JSONRPCBridge json_bridge = getBridge(session);
061        json_bridge.registerObject(key, value);
062    }
063
064    @Override
065    public JSONRPCBridge getBridge(HttpSession session)
066    {
067        JSONRPCBridge json_bridge = (JSONRPCBridge) session.getAttribute(JSON_BRIDGE_KEY);
068        if (json_bridge == null)
069        {
070            json_bridge = new JSONRPCBridge();
071            session.setAttribute(JSON_BRIDGE_KEY, json_bridge);
072        }
073        return json_bridge;
074    }
075
076    @Override
077    public void clearBridge(HttpSession session)
078    {
079        session.removeAttribute(JSON_BRIDGE_KEY);
080    }
081
082// The following is modeled on XmlRpcSercice.
083//    /**
084//     * Initialize the JsonRpcService.
085//     *
086//     * @throws InitializationException Something went wrong in the init stage.
087//     */
088//    public void init() throws InitializationException
089//    {
090//        //Configuration conf = getConfiguration();
091//        setInit(true);
092//    }
093//
094//    /**
095//     * Shuts down this service, stopping running threads.
096//     */
097//    public void shutdown()
098//    {
099//        setInit(false);
100//    }
101
102}