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1   package org.apache.turbine.services.jsonrpc;
2   
3   /*
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *   http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  import java.io.CharArrayWriter;
23  
24  import javax.servlet.http.HttpServletRequest;
25  import javax.servlet.http.HttpSession;
26  
27  import org.apache.turbine.services.Service;
28  import org.jabsorb.JSONRPCBridge;
29  
30  
31  /**
32   * The interface an JsonRpcService implements.
33   *
34   * @author <a href="mailto:seade@backstagetech.com.au">Scott Eade</a>
35   * @version $Id$
36   */
37  public interface JsonRpcService
38          extends Service
39  {
40      /** TurbineJsonRpcService. */
41      String SERVICE_NAME = "JsonRpcService";
42  
43      /**
44       * Process a JSON RPC call
45       * @param cdata the JSON data
46       * @param json_bridge the {@link JSONRPCBridge} object
47       * @param request the request
48       * @return the return object of the JSON RPC call
49       */
50      Object processCall(CharArrayWriter cdata,
51              JSONRPCBridge json_bridge, HttpServletRequest request);
52  
53      /**
54       * Register an object with the {@link JSONRPCBridge} in a given session
55       *
56       * @param session the session
57       * @param key the name of the object in the session
58       * @param value the object to register (not null)
59       */
60      void registerObject(HttpSession session, String key, Object value);
61  
62      /**
63       * Register an object with the {@link JSONRPCBridge} globally
64       *
65       * @param key the name of the object in the session
66       * @param value the object to register (not null)
67       */
68      void registerObjectGlobal(String key, Object value);
69  
70      /**
71       * Get the {@link JSONRPCBridge} from the session
72       *
73       * @param session the session
74       * @return the {@link JSONRPCBridge} instance
75       */
76      JSONRPCBridge getBridge(HttpSession session);
77  
78      /**
79       * Remove the {@link JSONRPCBridge} from the session
80       *
81       * @param session the session
82       */
83      void clearBridge(HttpSession session);
84  }