1 /*
2 * Copyright 1996-2006 Sun Microsystems, Inc. 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. Sun designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 * CA 95054 USA or visit www.sun.com if you need additional information or
23 * have any 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-mm-dd"
100 * @return a <code>java.sql.Date</code> object representing the
101 * given date
102 * @throws IllegalArgumentException if the date given is not in the
103 * JDBC date escape format (yyyy-mm-dd)
104 */
105 public static Date valueOf(String s) {
106 int year;
107 int month;
108 int day;
109 int firstDash;
110 int secondDash;
111
112 if (s == null) throw new java.lang.IllegalArgumentException();
113
114 firstDash = s.indexOf('-');
115 secondDash = s.indexOf('-', firstDash+1);
116 if ((firstDash > 0) & (secondDash > 0) & (secondDash < s.length()-1)) {
117 year = Integer.parseInt(s.substring(0, firstDash)) - 1900;
118 month = Integer.parseInt(s.substring(firstDash+1, secondDash)) - 1;
119 day = Integer.parseInt(s.substring(secondDash+1));
120 } else {
121 throw new java.lang.IllegalArgumentException();
122 }
123
124 return new Date(year, month, day);
125 }
126
127 /**
128 * Formats a date in the date escape format yyyy-mm-dd.
129 * <P>
130 * @return a String in yyyy-mm-dd format
131 */
132 public String toString () {
133 int year = super.getYear() + 1900;
134 int month = super.getMonth() + 1;
135 int day = super.getDate();
136
137 char buf[] = "2000-00-00".toCharArray();
138 buf[0] = Character.forDigit(year/1000,10);
139 buf[1] = Character.forDigit((year/100)%10,10);
140 buf[2] = Character.forDigit((year/10)%10,10);
141 buf[3] = Character.forDigit(year%10,10);
142 buf[5] = Character.forDigit(month/10,10);
143 buf[6] = Character.forDigit(month%10,10);
144 buf[8] = Character.forDigit(day/10,10);
145 buf[9] = Character.forDigit(day%10,10);
146
147 return new String(buf);
148 }
149
150 // Override all the time operations inherited from java.util.Date;
151
152 /**
153 * This method is deprecated and should not be used because SQL Date
154 * values do not have a time component.
155 *
156 * @deprecated
157 * @exception java.lang.IllegalArgumentException if this method is invoked
158 * @see #setHours
159 */
160 public int getHours() {
161 throw new java.lang.IllegalArgumentException();
162 }
163
164 /**
165 * This method is deprecated and should not be used because SQL Date
166 * values do not have a time component.
167 *
168 * @deprecated
169 * @exception java.lang.IllegalArgumentException if this method is invoked
170 * @see #setMinutes
171 */
172 public int getMinutes() {
173 throw new java.lang.IllegalArgumentException();
174 }
175
176 /**
177 * This method is deprecated and should not be used because SQL Date
178 * values do not have a time component.
179 *
180 * @deprecated
181 * @exception java.lang.IllegalArgumentException if this method is invoked
182 * @see #setSeconds
183 */
184 public int getSeconds() {
185 throw new java.lang.IllegalArgumentException();
186 }
187
188 /**
189 * This method is deprecated and should not be used because SQL Date
190 * values do not have a time component.
191 *
192 * @deprecated
193 * @exception java.lang.IllegalArgumentException if this method is invoked
194 * @see #getHours
195 */
196 public void setHours(int i) {
197 throw new java.lang.IllegalArgumentException();
198 }
199
200 /**
201 * This method is deprecated and should not be used because SQL Date
202 * values do not have a time component.
203 *
204 * @deprecated
205 * @exception java.lang.IllegalArgumentException if this method is invoked
206 * @see #getMinutes
207 */
208 public void setMinutes(int i) {
209 throw new java.lang.IllegalArgumentException();
210 }
211
212 /**
213 * This method is deprecated and should not be used because SQL Date
214 * values do not have a time component.
215 *
216 * @deprecated
217 * @exception java.lang.IllegalArgumentException if this method is invoked
218 * @see #getSeconds
219 */
220 public void setSeconds(int i) {
221 throw new java.lang.IllegalArgumentException();
222 }
223
224 /**
225 * Private serial version unique ID to ensure serialization
226 * compatibility.
227 */
228 static final long serialVersionUID = 1511598038487230103L;
229 }
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