KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > com > caucho > hessian > io > MapDeserializer


1 /*
2  * Copyright (c) 2001-2004 Caucho Technology, Inc. All rights reserved.
3  *
4  * The Apache Software License, Version 1.1
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  *
10  * 1. Redistributions of source code must retain the above copyright
11  * notice, this list of conditions and the following disclaimer.
12  *
13  * 2. Redistributions in binary form must reproduce the above copyright
14  * notice, this list of conditions and the following disclaimer in
15  * the documentation and/or other materials provided with the
16  * distribution.
17  *
18  * 3. The end-user documentation included with the redistribution, if
19  * any, must include the following acknowlegement:
20  * "This product includes software developed by the
21  * Caucho Technology (http://www.caucho.com/)."
22  * Alternately, this acknowlegement may appear in the software itself,
23  * if and wherever such third-party acknowlegements normally appear.
24  *
25  * 4. The names "Hessian", "Resin", and "Caucho" must not be used to
26  * endorse or promote products derived from this software without prior
27  * written permission. For written permission, please contact
28  * info@caucho.com.
29  *
30  * 5. Products derived from this software may not be called "Resin"
31  * nor may "Resin" appear in their names without prior written
32  * permission of Caucho Technology.
33  *
34  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
35  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
36  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
37  * DISCLAIMED. IN NO EVENT SHALL CAUCHO TECHNOLOGY OR ITS CONTRIBUTORS
38  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
39  * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
40  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
41  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
42  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
43  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
44  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
45  *
46  * @author Scott Ferguson
47  */
48
49 package com.caucho.hessian.io;
50
51 import java.io.IOException JavaDoc;
52 import java.util.HashMap JavaDoc;
53 import java.util.Map JavaDoc;
54 import java.util.SortedMap JavaDoc;
55 import java.util.TreeMap JavaDoc;
56
57 /**
58  * Deserializing a JDK 1.2 Map.
59  */
60 public class MapDeserializer extends AbstractMapDeserializer {
61   private Class JavaDoc type;
62   
63   public MapDeserializer(Class JavaDoc type)
64   {
65     this.type = type;
66   }
67   
68   public Class JavaDoc getType()
69   {
70     if (this.type != null)
71       return this.type;
72     else
73       return HashMap JavaDoc.class;
74   }
75
76   public Object JavaDoc readMap(AbstractHessianInput in)
77     throws IOException JavaDoc
78   {
79     Map JavaDoc map;
80     
81     if (type == null)
82       map = new HashMap JavaDoc();
83     else if (type.equals(Map JavaDoc.class))
84       map = new HashMap JavaDoc();
85     else if (type.equals(SortedMap JavaDoc.class))
86       map = new TreeMap JavaDoc();
87     else {
88       try {
89         map = (Map JavaDoc) type.newInstance();
90       } catch (Exception JavaDoc e) {
91         throw new IOExceptionWrapper(e);
92       }
93     }
94
95     in.addRef(map);
96
97     while (! in.isEnd()) {
98       map.put(in.readObject(), in.readObject());
99     }
100
101     in.readEnd();
102
103     return map;
104   }
105 }
106
Popular Tags