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