1 /*
2 * Copyright (c) 1996, 2010, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package java.sql;
27
28 /**
29 * <P>A thin wrapper around a millisecond value that allows
30 * JDBC to identify this as an SQL <code>DATE</code> value. A
31 * milliseconds value represents the number of milliseconds that
32 * have passed since January 1, 1970 00:00:00.000 GMT.
33 * <p>
34 * To conform with the definition of SQL <code>DATE</code>, the
35 * millisecond values wrapped by a <code>java.sql.Date</code> instance
36 * must be 'normalized' by setting the
37 * hours, minutes, seconds, and milliseconds to zero in the particular
38 * time zone with which the instance is associated.
39 */
40 public class Date extends java.util.Date {
41
42 /**
43 * Constructs a <code>Date</code> object initialized with the given
44 * year, month, and day.
45 * <P>
46 * The result is undefined if a given argument is out of bounds.
47 *
48 * @param year the year minus 1900; must be 0 to 8099. (Note that
49 * 8099 is 9999 minus 1900.)
50 * @param month 0 to 11
51 * @param day 1 to 31
52 * @deprecated instead use the constructor <code>Date(long date)</code>
53 */
54 public Date(int year, int month, int day) {
55 super(year, month, day);
56 }
57
58 /**
59 * Constructs a <code>Date</code> object using the given milliseconds
60 * time value. If the given milliseconds value contains time
61 * information, the driver will set the time components to the
62 * time in the default time zone (the time zone of the Java virtual
63 * machine running the application) that corresponds to zero GMT.
64 *
65 * @param date milliseconds since January 1, 1970, 00:00:00 GMT not
66 * to exceed the milliseconds representation for the year 8099.
67 * A negative number indicates the number of milliseconds
68 * before January 1, 1970, 00:00:00 GMT.
69 */
70 public Date(long date) {
71 // If the millisecond date value contains time info, mask it out.
72 super(date);
73
74 }
75
76 /**
77 * Sets an existing <code>Date</code> object
78 * using the given milliseconds time value.
79 * If the given milliseconds value contains time information,
80 * the driver will set the time components to the
81 * time in the default time zone (the time zone of the Java virtual
82 * machine running the application) that corresponds to zero GMT.
83 *
84 * @param date milliseconds since January 1, 1970, 00:00:00 GMT not
85 * to exceed the milliseconds representation for the year 8099.
86 * A negative number indicates the number of milliseconds
87 * before January 1, 1970, 00:00:00 GMT.
88 */
89 public void setTime(long date) {
90 // If the millisecond date value contains time info, mask it out.
91 super.setTime(date);
92 }
93
94 /**
95 * Converts a string in JDBC date escape format to
96 * a <code>Date</code> value.
97 *
98 * @param s a <code>String</code> object representing a date in
99 * in the format "yyyy-[m]m-[d]d". The leading zero for <code>mm</code>
100 * and <code>dd</code> may also be omitted.
101 * @return a <code>java.sql.Date</code> object representing the
102 * given date
103 * @throws IllegalArgumentException if the date given is not in the
104 * JDBC date escape format (yyyy-[m]m-[d]d)
105 */
106 public static Date valueOf(String s) {
107 final int YEAR_LENGTH = 4;
108 final int MONTH_LENGTH = 2;
109 final int DAY_LENGTH = 2;
110 final int MAX_MONTH = 12;
111 final int MAX_DAY = 31;
112 int firstDash;
113 int secondDash;
114 Date d = null;
115
116 if (s == null) {
117 throw new java.lang.IllegalArgumentException();
118 }
119
120 firstDash = s.indexOf('-');
121 secondDash = s.indexOf('-', firstDash + 1);
122
123 if ((firstDash > 0) && (secondDash > 0) && (secondDash < s.length() - 1)) {
124 String yyyy = s.substring(0, firstDash);
125 String mm = s.substring(firstDash + 1, secondDash);
126 String dd = s.substring(secondDash + 1);
127 if (yyyy.length() == YEAR_LENGTH &&
128 (mm.length() >= 1 && mm.length() <= MONTH_LENGTH) &&
129 (dd.length() >= 1 && dd.length() <= DAY_LENGTH)) {
130 int year = Integer.parseInt(yyyy);
131 int month = Integer.parseInt(mm);
132 int day = Integer.parseInt(dd);
133
134 if ((month >= 1 && month <= MAX_MONTH) && (day >= 1 && day <= MAX_DAY)) {
135 d = new Date(year - 1900, month - 1, day);
136 }
137 }
138 }
139 if (d == null) {
140 throw new java.lang.IllegalArgumentException();
141 }
142
143 return d;
144
145 }
146
147
148 /**
149 * Formats a date in the date escape format yyyy-mm-dd.
150 * <P>
151 * @return a String in yyyy-mm-dd format
152 */
153 public String toString () {
154 int year = super.getYear() + 1900;
155 int month = super.getMonth() + 1;
156 int day = super.getDate();
157
158 char buf[] = "2000-00-00".toCharArray();
159 buf[0] = Character.forDigit(year/1000,10);
160 buf[1] = Character.forDigit((year/100)%10,10);
161 buf[2] = Character.forDigit((year/10)%10,10);
162 buf[3] = Character.forDigit(year%10,10);
163 buf[5] = Character.forDigit(month/10,10);
164 buf[6] = Character.forDigit(month%10,10);
165 buf[8] = Character.forDigit(day/10,10);
166 buf[9] = Character.forDigit(day%10,10);
167
168 return new String(buf);
169 }
170
171 // Override all the time operations inherited from java.util.Date;
172
173 /**
174 * This method is deprecated and should not be used because SQL Date
175 * values do not have a time component.
176 *
177 * @deprecated
178 * @exception java.lang.IllegalArgumentException if this method is invoked
179 * @see #setHours
180 */
181 public int getHours() {
182 throw new java.lang.IllegalArgumentException();
183 }
184
185 /**
186 * This method is deprecated and should not be used because SQL Date
187 * values do not have a time component.
188 *
189 * @deprecated
190 * @exception java.lang.IllegalArgumentException if this method is invoked
191 * @see #setMinutes
192 */
193 public int getMinutes() {
194 throw new java.lang.IllegalArgumentException();
195 }
196
197 /**
198 * This method is deprecated and should not be used because SQL Date
199 * values do not have a time component.
200 *
201 * @deprecated
202 * @exception java.lang.IllegalArgumentException if this method is invoked
203 * @see #setSeconds
204 */
205 public int getSeconds() {
206 throw new java.lang.IllegalArgumentException();
207 }
208
209 /**
210 * This method is deprecated and should not be used because SQL Date
211 * values do not have a time component.
212 *
213 * @deprecated
214 * @exception java.lang.IllegalArgumentException if this method is invoked
215 * @see #getHours
216 */
217 public void setHours(int i) {
218 throw new java.lang.IllegalArgumentException();
219 }
220
221 /**
222 * This method is deprecated and should not be used because SQL Date
223 * values do not have a time component.
224 *
225 * @deprecated
226 * @exception java.lang.IllegalArgumentException if this method is invoked
227 * @see #getMinutes
228 */
229 public void setMinutes(int i) {
230 throw new java.lang.IllegalArgumentException();
231 }
232
233 /**
234 * This method is deprecated and should not be used because SQL Date
235 * values do not have a time component.
236 *
237 * @deprecated
238 * @exception java.lang.IllegalArgumentException if this method is invoked
239 * @see #getSeconds
240 */
241 public void setSeconds(int i) {
242 throw new java.lang.IllegalArgumentException();
243 }
244
245 /**
246 * Private serial version unique ID to ensure serialization
247 * compatibility.
248 */
249 static final long serialVersionUID = 1511598038487230103L;
250 }