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15 package org.mortbay.util.ajax;
16
17 import java.text.DateFormatSymbols;
18 import java.text.SimpleDateFormat;
19 import java.util.Date;
20 import java.util.Locale;
21 import java.util.Map;
22 import java.util.TimeZone;
23
24 import org.mortbay.log.Log;
25 import org.mortbay.util.DateCache;
26 import org.mortbay.util.ajax.JSON.Output;
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35 public class JSONDateConvertor implements JSON.Convertor
36 {
37 private boolean _fromJSON;
38 DateCache _dateCache;
39 SimpleDateFormat _format;
40
41 public JSONDateConvertor()
42 {
43 this(false);
44 }
45
46 public JSONDateConvertor(boolean fromJSON)
47 {
48 this(DateCache.DEFAULT_FORMAT,TimeZone.getTimeZone("GMT"),fromJSON);
49 }
50
51 public JSONDateConvertor(String format,TimeZone zone,boolean fromJSON)
52 {
53 _dateCache=new DateCache(format);
54 _dateCache.setTimeZone(zone);
55 _fromJSON=fromJSON;
56 _format=new SimpleDateFormat(format);
57 _format.setTimeZone(zone);
58 }
59
60 public JSONDateConvertor(String format, TimeZone zone, boolean fromJSON, Locale locale)
61 {
62 _dateCache = new DateCache(format, locale);
63 _dateCache.setTimeZone(zone);
64 _fromJSON = fromJSON;
65 _format = new SimpleDateFormat(format, new DateFormatSymbols(locale));
66 _format.setTimeZone(zone);
67 }
68
69 public Object fromJSON(Map map)
70 {
71 if (!_fromJSON)
72 throw new UnsupportedOperationException();
73 try
74 {
75 synchronized(_format)
76 {
77 return _format.parseObject((String)map.get("value"));
78 }
79 }
80 catch(Exception e)
81 {
82 Log.warn(e);
83 }
84 return null;
85 }
86
87 public void toJSON(Object obj, Output out)
88 {
89 String date = _dateCache.format((Date)obj);
90 if (_fromJSON)
91 {
92 out.addClass(obj.getClass());
93 out.add("value",date);
94 }
95 else
96 {
97 out.add(date);
98 }
99 }
100
101 }