1 //
2 // ========================================================================
3 // Copyright (c) 1995-2016 Mort Bay Consulting Pty. Ltd.
4 // ------------------------------------------------------------------------
5 // All rights reserved. This program and the accompanying materials
6 // are made available under the terms of the Eclipse Public License v1.0
7 // and Apache License v2.0 which accompanies this distribution.
8 //
9 // The Eclipse Public License is available at
10 // http://www.eclipse.org/legal/epl-v10.html
11 //
12 // The Apache License v2.0 is available at
13 // http://www.opensource.org/licenses/apache2.0.php
14 //
15 // You may elect to redistribute this code under either of these licenses.
16 // ========================================================================
17 //
18
19 package org.eclipse.jetty.util.ajax;
20
21 import java.util.Map;
22
23 import org.eclipse.jetty.util.Loader;
24 import org.eclipse.jetty.util.ajax.JSON.Convertor;
25 import org.eclipse.jetty.util.ajax.JSON.Output;
26
27 public class JSONPojoConvertorFactory implements JSON.Convertor
28 {
29 private final JSON _json;
30 private final boolean _fromJson;
31
32 public JSONPojoConvertorFactory(JSON json)
33 {
34 if (json==null)
35 {
36 throw new IllegalArgumentException();
37 }
38 _json=json;
39 _fromJson=true;
40 }
41
42 /* ------------------------------------------------------------ */
43 /**
44 * @param json The JSON instance to use
45 * @param fromJSON If true, the class name of the objects is included
46 * in the generated JSON and is used to instantiate the object when
47 * JSON is parsed (otherwise a Map is used).
48 */
49 public JSONPojoConvertorFactory(JSON json,boolean fromJSON)
50 {
51 if (json==null)
52 {
53 throw new IllegalArgumentException();
54 }
55 _json=json;
56 _fromJson=fromJSON;
57 }
58
59 /* ------------------------------------------------------------ */
60 public void toJSON(Object obj, Output out)
61 {
62 String clsName=obj.getClass().getName();
63 Convertor convertor=_json.getConvertorFor(clsName);
64 if (convertor==null)
65 {
66 try
67 {
68 Class cls=Loader.loadClass(JSON.class,clsName);
69 convertor=new JSONPojoConvertor(cls,_fromJson);
70 _json.addConvertorFor(clsName, convertor);
71 }
72 catch (ClassNotFoundException e)
73 {
74 JSON.LOG.warn(e);
75 }
76 }
77 if (convertor!=null)
78 {
79 convertor.toJSON(obj, out);
80 }
81 }
82
83 public Object fromJSON(Map object)
84 {
85 Map map=object;
86 String clsName=(String)map.get("class");
87 if (clsName!=null)
88 {
89 Convertor convertor=_json.getConvertorFor(clsName);
90 if (convertor==null)
91 {
92 try
93 {
94 Class cls=Loader.loadClass(JSON.class,clsName);
95 convertor=new JSONPojoConvertor(cls,_fromJson);
96 _json.addConvertorFor(clsName, convertor);
97 }
98 catch (ClassNotFoundException e)
99 {
100 JSON.LOG.warn(e);
101 }
102 }
103 if (convertor!=null)
104 {
105 return convertor.fromJSON(object);
106 }
107 }
108 return map;
109 }
110 }