1 /**********************************************************************
2 * ServerHandler.java
3 * created on 07.08.2004 by netseeker
4 * $Source: /cvsroot/ejoe/EJOE/src/de/netseeker/ejoe/handler/ServerHandler.java,v $
5 * $Date: 2007/11/17 10:57:00 $
6 * $Revision: 1.8 $
7 *
8 * ====================================================================
9 *
10 * Copyright 2005-2006 netseeker aka Michael Manske
11 *
12 * Licensed under the Apache License, Version 2.0 (the "License");
13 * you may not use this file except in compliance with the License.
14 * You may obtain a copy of the License at
15 *
16 * http://www.apache.org/licenses/LICENSE-2.0
17 *
18 * Unless required by applicable law or agreed to in writing, software
19 * distributed under the License is distributed on an "AS IS" BASIS,
20 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
21 * See the License for the specific language governing permissions and
22 * limitations under the License.
23 * ====================================================================
24 *
25 * This file is part of the ejoe framework.
26 * For more information on the author, please see
27 * <http://www.manskes.de/>.
28 *
29 *********************************************************************/
30
31 package de.netseeker.ejoe.handler;
32
33 import java.io.Serializable;
34
35 /***
36 * Simple interface defining the entry point for all server handlers. Server handlers are the working horses which the
37 * caller must implement. Server handlers take the transported input objects send by the client application and return
38 * none, one or more return values.
39 *
40 * @author netseeker aka Michael Manske
41 * @since 0.3.0
42 */
43 public interface ServerHandler extends Serializable
44 {
45 /***
46 * Handles a client request
47 *
48 * @param obj The input object transported by EJOE
49 * @return null or an valid return value. If you want return custom datatypes, eg. your own beans and don't want (or
50 * are not able) to deploy the classes of these datatypes on the client you can turn on EJOEs remote
51 * classloading feature.
52 */
53 public Object handle( Object obj ) throws Exception;
54 }