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1 package org.jbpm.bpel.xml.util;
2
3 import java.util.Calendar  ;
4 import java.util.Date ;
5 import java.util.GregorianCalendar ;
6 import java.util.regex.Matcher ;
7 import java.util.regex.Pattern ;
8
9
15 public class Duration {
16
17 private short year;
18 private short month;
19 private short day;
20 private short hour;
21 private short minute;
22 private short second;
23 private short millis;
24
25 private boolean negative;
26
27 private static final Pattern durationPattern = Pattern.compile(
28 "(-)?" + "P" + "(?:(\\p{Digit}+)Y)?" + "(?:(\\p{Digit}+)M)?" + "(?:(\\p{Digit}+)D)?" + "(?:T" + "(?:(\\p{Digit}+)H)?" + "(?:(\\p{Digit}+)M)?" + "(?:" + "(\\p{Digit}+)" + "(?:\\." + "(\\p{Digit}{1,3})" + "\\p{Digit}*" + ")?" + "S)?" + ")?");
45 public Duration() {
46 }
47
48 public Duration(int year, int month, int day,
49 int hour, int minute, int second, int millis) {
50 setYear((short) year);
51 setMonth((short) month);
52 setDay((short) day);
53 setHour((short) hour);
54 setMinute((short) minute);
55 setSecond((short) second);
56 setMillis((short) millis);
57 }
58
59 public boolean isNegative() {
60 return negative;
61 }
62
63 public void setNegative(boolean negative) {
64 this.negative = negative;
65 }
66
67 public short getYear() {
68 return year;
69 }
70
71 public void setYear(short year) {
72 this.year = year;
73 }
74
75 public short getMonth() {
76 return month;
77 }
78
79 public void setMonth(short month) {
80 this.month = month;
81 }
82
83 public short getDay() {
84 return day;
85 }
86
87 public void setDay(short day) {
88 this.day = day;
89 }
90
91 public short getHour() {
92 return hour;
93 }
94
95 public void setHour(short hour) {
96 this.hour = hour;
97 }
98
99 public short getMinute() {
100 return minute;
101 }
102
103 public void setMinute(short minute) {
104 this.minute = minute;
105 }
106
107 public short getSecond() {
108 return second;
109 }
110
111 public void setSecond(short second) {
112 this.second = second;
113 }
114
115 public short getMillis() {
116 return millis;
117 }
118
119 public void setMillis(short millis) {
120 this.millis = millis;
121 }
122
123 public Date add(Date dateTime) {
124 Calendar calendar = Calendar.getInstance();
125 calendar.setTime(dateTime);
126
127 calendar.add(Calendar.YEAR, year);
128 calendar.add(Calendar.MONTH, month);
129 calendar.add(Calendar.DAY_OF_MONTH, day);
130 calendar.add(Calendar.HOUR_OF_DAY, hour);
131 calendar.add(Calendar.MINUTE, minute);
132 calendar.add(Calendar.SECOND, second);
133 calendar.add(Calendar.MILLISECOND, millis);
134
135 return calendar.getTime();
136 }
137
138 public boolean equals(Object obj) {
139 boolean equals = false;
140
141 if (obj instanceof Duration) {
142 Duration d = (Duration) obj;
143 equals =
144 year == d.year && month == d.month && day == d.day &&
145 hour == d.hour && minute == d.minute && second == d.second &&
146 millis == d.millis && negative == d.negative;
147 }
148 return equals;
149 }
150
151 public int hashCode() {
152 return year ^ month ^ day ^ hour ^ minute ^ second ^ millis ^ (negative ? 1231 : 1237);
153 }
154
155 public String toString() {
156 StringBuffer literal = new StringBuffer ();
157
158 if (negative)
159 literal.append('-');
160 literal.append('P');
161
162 if (year != 0)
163 literal.append(year).append('Y');
164 if (month != 0)
165 literal.append(month).append('M');
166 if (day != 0)
167 literal.append(day).append('D');
168
169 if (hour != 0 || minute != 0 || second != 0 || millis != 0) {
170 literal.append('T');
171
172 if (hour != 0)
173 literal.append(hour).append('H');
174 if (minute != 0)
175 literal.append(minute).append('M');
176
177 if (second != 0) {
178 literal.append(second);
179
180 if (millis != 0)
181 literal.append('.').append(formatDecimal(millis, 3));
182
183 literal.append('S');
184 }
185 else if (millis != 0)
186 literal.append('0').append(formatDecimal(millis, 3)).append('S');
187 }
188 return literal.toString();
189 }
190
191 public static Duration parseDuration(String literal) {
192 Matcher matcher = durationPattern.matcher(literal);
193 Duration duration = null;
194 if (matcher.matches()) {
195 duration = new Duration();
196 if (matcher.group(1) != null)
198 duration.setNegative(true);
199 String group = matcher.group(2);
201 if (group != null)
202 duration.setYear(Short.parseShort(group));
203 group = matcher.group(3);
205 if (group != null)
206 duration.setMonth(Short.parseShort(group));
207 group = matcher.group(4);
209 if (group != null)
210 duration.setDay(Short.parseShort(group));
211 group = matcher.group(5);
213 if (group != null)
214 duration.setHour(Short.parseShort(group));
215 group = matcher.group(6);
217 if (group != null)
218 duration.setMinute(Short.parseShort(group));
219 group = matcher.group(7);
221 if (group != null)
222 duration.setSecond(Short.parseShort(group));
223 group = matcher.group(8);
225 if (group != null)
226 duration.setMillis(parseDecimal(group, 3));
227 }
228 return duration;
229 }
230
231 private static short parseDecimal(String literal, int digitCount) {
232 short number = Short.parseShort(literal);
233
234 for (int i = 0, n = digitCount - literal.length(); i < n; i++)
235 number *= 10;
236
237 return number;
238 }
239
240 private static String formatDecimal(short number, int digitCount) {
241 String literal = Short.toString(number);
242
243 if (literal.length() < digitCount) {
244 StringBuffer buffer = new StringBuffer ();
245
246 for (int i = 0, n = digitCount - literal.length(); i < n; i++) {
247 buffer.append('0');
248 }
249 literal = buffer.append(literal).toString();
250 }
251
252 int i = digitCount;
253 while (--i > 0 && literal.charAt(i) == '0')
254 ;
256 return literal.substring(0, i + 1);
257 }
258
259 public Date getTime() {
260 Calendar calendar = new GregorianCalendar (year, month, day, hour, minute, second);
261 calendar.add(Calendar.MILLISECOND, millis);
262 return calendar.getTime();
263 }
264 }
265 |
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