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| 1 | /* | ||
| 2 | * Copyright (c) 1996, 2011, 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 | import java.util.StringTokenizer; | ||
| 29 | |||
| 30 | /** | ||
| 31 | * <P>A thin wrapper around <code>java.util.Date</code> that allows | ||
| 32 | * the JDBC API to identify this as an SQL <code>TIMESTAMP</code> value. | ||
| 33 | * It adds the ability | ||
| 34 | * to hold the SQL <code>TIMESTAMP</code> fractional seconds value, by allowing | ||
| 35 | * the specification of fractional seconds to a precision of nanoseconds. | ||
| 36 | * A Timestamp also provides formatting and | ||
| 37 | * parsing operations to support the JDBC escape syntax for timestamp values. | ||
| 38 | * | ||
| 39 | * <p>The precision of a Timestamp object is calculated to be either: | ||
| 40 | * <ul> | ||
| 41 | * <li><code>19 </code>, which is the number of characters in yyyy-mm-dd hh:mm:ss | ||
| 42 | * <li> <code> 20 + s </code>, which is the number | ||
| 43 | * of characters in the yyyy-mm-dd hh:mm:ss.[fff...] and <code>s</code> represents the scale of the given Timestamp, | ||
| 44 | * its fractional seconds precision. | ||
| 45 | *</ul> | ||
| 46 | * | ||
| 47 | * <P><B>Note:</B> This type is a composite of a <code>java.util.Date</code> and a | ||
| 48 | * separate nanoseconds value. Only integral seconds are stored in the | ||
| 49 | * <code>java.util.Date</code> component. The fractional seconds - the nanos - are | ||
| 50 | * separate. The <code>Timestamp.equals(Object)</code> method never returns | ||
| 51 | * <code>true</code> when passed an object | ||
| 52 | * that isn't an instance of <code>java.sql.Timestamp</code>, | ||
| 53 | * because the nanos component of a date is unknown. | ||
| 54 | * As a result, the <code>Timestamp.equals(Object)</code> | ||
| 55 | * method is not symmetric with respect to the | ||
| 56 | * <code>java.util.Date.equals(Object)</code> | ||
| 57 | * method. Also, the <code>hashCode</code> method uses the underlying | ||
| 58 | * <code>java.util.Date</code> | ||
| 59 | * implementation and therefore does not include nanos in its computation. | ||
| 60 | * <P> | ||
| 61 | * Due to the differences between the <code>Timestamp</code> class | ||
| 62 | * and the <code>java.util.Date</code> | ||
| 63 | * class mentioned above, it is recommended that code not view | ||
| 64 | * <code>Timestamp</code> values generically as an instance of | ||
| 65 | * <code>java.util.Date</code>. The | ||
| 66 | * inheritance relationship between <code>Timestamp</code> | ||
| 67 | * and <code>java.util.Date</code> really | ||
| 68 | * denotes implementation inheritance, and not type inheritance. | ||
| 69 | */ | ||
| 70 | public class Timestamp extends java.util.Date { | ||
| 71 | |||
| 72 | /** | ||
| 73 | * Constructs a <code>Timestamp</code> object initialized | ||
| 74 | * with the given values. | ||
| 75 | * | ||
| 76 | * @param year the year minus 1900 | ||
| 77 | * @param month 0 to 11 | ||
| 78 | * @param date 1 to 31 | ||
| 79 | * @param hour 0 to 23 | ||
| 80 | * @param minute 0 to 59 | ||
| 81 | * @param second 0 to 59 | ||
| 82 | * @param nano 0 to 999,999,999 | ||
| 83 | * @deprecated instead use the constructor <code>Timestamp(long millis)</code> | ||
| 84 | * @exception IllegalArgumentException if the nano argument is out of bounds | ||
| 85 | */ | ||
| 86 | @Deprecated | ||
| 87 | public Timestamp(int year, int month, int date, | ||
| 88 | int hour, int minute, int second, int nano) { | ||
| 89 | super(year, month, date, hour, minute, second); | ||
| 90 | if (nano > 999999999 || nano < 0) { | ||
| 91 | throw new IllegalArgumentException("nanos > 999999999 or < 0"); | ||
| 92 | } | ||
| 93 | nanos = nano; | ||
| 94 | } | ||
| 95 | |||
| 96 | /** | ||
| 97 | * Constructs a <code>Timestamp</code> object | ||
| 98 | * using a milliseconds time value. The | ||
| 99 | * integral seconds are stored in the underlying date value; the | ||
| 100 | * fractional seconds are stored in the <code>nanos</code> field of | ||
| 101 | * the <code>Timestamp</code> object. | ||
| 102 | * | ||
| 103 | * @param time milliseconds since January 1, 1970, 00:00:00 GMT. | ||
| 104 | * A negative number is the number of milliseconds before | ||
| 105 | * January 1, 1970, 00:00:00 GMT. | ||
| 106 | * @see java.util.Calendar | ||
| 107 | */ | ||
| 108 | public Timestamp(long time) { | ||
| 109 | super((time/1000)*1000); | ||
| 110 | nanos = (int)((time%1000) * 1000000); | ||
| 111 | if (nanos < 0) { | ||
| 112 | nanos = 1000000000 + nanos; | ||
| 113 | super.setTime(((time/1000)-1)*1000); | ||
| 114 | } | ||
| 115 | } | ||
| 116 | |||
| 117 | /** | ||
| 118 | * Sets this <code>Timestamp</code> object to represent a point in time that is | ||
| 119 | * <tt>time</tt> milliseconds after January 1, 1970 00:00:00 GMT. | ||
| 120 | * | ||
| 121 | * @param time the number of milliseconds. | ||
| 122 | * @see #getTime | ||
| 123 | * @see #Timestamp(long time) | ||
| 124 | * @see java.util.Calendar | ||
| 125 | */ | ||
| 126 | public void setTime(long time) { | ||
| 127 | super.setTime((time/1000)*1000); | ||
| 128 | nanos = (int)((time%1000) * 1000000); | ||
| 129 | if (nanos < 0) { | ||
| 130 | nanos = 1000000000 + nanos; | ||
| 131 | super.setTime(((time/1000)-1)*1000); | ||
| 132 | } | ||
| 133 | } | ||
| 134 | |||
| 135 | /** | ||
| 136 | * Returns the number of milliseconds since January 1, 1970, 00:00:00 GMT | ||
| 137 | * represented by this <code>Timestamp</code> object. | ||
| 138 | * | ||
| 139 | * @return the number of milliseconds since January 1, 1970, 00:00:00 GMT | ||
| 140 | * represented by this date. | ||
| 141 | * @see #setTime | ||
| 142 | */ | ||
| 143 | public long getTime() { | ||
| 144 | long time = super.getTime(); | ||
| 145 | return (time + (nanos / 1000000)); | ||
| 146 | } | ||
| 147 | |||
| 148 | |||
| 149 | /** | ||
| 150 | * @serial | ||
| 151 | */ | ||
| 152 | private int nanos; | ||
| 153 | |||
| 154 | /** | ||
| 155 | * Converts a <code>String</code> object in JDBC timestamp escape format to a | ||
| 156 | * <code>Timestamp</code> value. | ||
| 157 | * | ||
| 158 | * @param s timestamp in format <code>yyyy-[m]m-[d]d hh:mm:ss[.f...]</code>. The | ||
| 159 | * fractional seconds may be omitted. The leading zero for <code>mm</code> | ||
| 160 | * and <code>dd</code> may also be omitted. | ||
| 161 | * | ||
| 162 | * @return corresponding <code>Timestamp</code> value | ||
| 163 | * @exception java.lang.IllegalArgumentException if the given argument | ||
| 164 | * does not have the format <code>yyyy-[m]m-[d]d hh:mm:ss[.f...]</code> | ||
| 165 | */ | ||
| 166 | public static Timestamp valueOf(String s) { | ||
| 167 | final int YEAR_LENGTH = 4; | ||
| 168 | final int MONTH_LENGTH = 2; | ||
| 169 | final int DAY_LENGTH = 2; | ||
| 170 | final int MAX_MONTH = 12; | ||
| 171 | final int MAX_DAY = 31; | ||
| 172 | String date_s; | ||
| 173 | String time_s; | ||
| 174 | String nanos_s; | ||
| 175 | int year = 0; | ||
| 176 | int month = 0; | ||
| 177 | int day = 0; | ||
| 178 | int hour; | ||
| 179 | int minute; | ||
| 180 | int second; | ||
| 181 | int a_nanos = 0; | ||
| 182 | int firstDash; | ||
| 183 | int secondDash; | ||
| 184 | int dividingSpace; | ||
| 185 | int firstColon = 0; | ||
| 186 | int secondColon = 0; | ||
| 187 | int period = 0; | ||
| 188 | String formatError = "Timestamp format must be yyyy-mm-dd hh:mm:ss[.fffffffff]"; | ||
| 189 | String zeros = "000000000"; | ||
| 190 | String delimiterDate = "-"; | ||
| 191 | String delimiterTime = ":"; | ||
| 192 | |||
| 193 | if (s == null) throw new java.lang.IllegalArgumentException("null string"); | ||
| 194 | |||
| 195 | // Split the string into date and time components | ||
| 196 | s = s.trim(); | ||
| 197 | dividingSpace = s.indexOf(' '); | ||
| 198 | if (dividingSpace > 0) { | ||
| 199 | date_s = s.substring(0,dividingSpace); | ||
| 200 | time_s = s.substring(dividingSpace+1); | ||
| 201 | } else { | ||
| 202 | throw new java.lang.IllegalArgumentException(formatError); | ||
| 203 | } | ||
| 204 | |||
| 205 | // Parse the date | ||
| 206 | firstDash = date_s.indexOf('-'); | ||
| 207 | secondDash = date_s.indexOf('-', firstDash+1); | ||
| 208 | |||
| 209 | // Parse the time | ||
| 210 | if (time_s == null) | ||
| 211 | throw new java.lang.IllegalArgumentException(formatError); | ||
| 212 | firstColon = time_s.indexOf(':'); | ||
| 213 | secondColon = time_s.indexOf(':', firstColon+1); | ||
| 214 | period = time_s.indexOf('.', secondColon+1); | ||
| 215 | |||
| 216 | // Convert the date | ||
| 217 | boolean parsedDate = false; | ||
| 218 | if ((firstDash > 0) && (secondDash > 0) && (secondDash < date_s.length() - 1)) { | ||
| 219 | String yyyy = date_s.substring(0, firstDash); | ||
| 220 | String mm = date_s.substring(firstDash + 1, secondDash); | ||
| 221 | String dd = date_s.substring(secondDash + 1); | ||
| 222 | if (yyyy.length() == YEAR_LENGTH && | ||
| 223 | (mm.length() >= 1 && mm.length() <= MONTH_LENGTH) && | ||
| 224 | (dd.length() >= 1 && dd.length() <= DAY_LENGTH)) { | ||
| 225 | year = Integer.parseInt(yyyy); | ||
| 226 | month = Integer.parseInt(mm); | ||
| 227 | day = Integer.parseInt(dd); | ||
| 228 | |||
| 229 | if ((month >= 1 && month <= MAX_MONTH) && (day >= 1 && day <= MAX_DAY)) { | ||
| 230 | parsedDate = true; | ||
| 231 | } | ||
| 232 | } | ||
| 233 | } | ||
| 234 | if (! parsedDate) { | ||
| 235 | throw new java.lang.IllegalArgumentException(formatError); | ||
| 236 | } | ||
| 237 | |||
| 238 | // Convert the time; default missing nanos | ||
| 239 | if ((firstColon > 0) & (secondColon > 0) & | ||
| 240 | (secondColon < time_s.length()-1)) { | ||
| 241 | hour = Integer.parseInt(time_s.substring(0, firstColon)); | ||
| 242 | minute = | ||
| 243 | Integer.parseInt(time_s.substring(firstColon+1, secondColon)); | ||
| 244 | if ((period > 0) & (period < time_s.length()-1)) { | ||
| 245 | second = | ||
| 246 | Integer.parseInt(time_s.substring(secondColon+1, period)); | ||
| 247 | nanos_s = time_s.substring(period+1); | ||
| 248 | if (nanos_s.length() > 9) | ||
| 249 | throw new java.lang.IllegalArgumentException(formatError); | ||
| 250 | if (!Character.isDigit(nanos_s.charAt(0))) | ||
| 251 | throw new java.lang.IllegalArgumentException(formatError); | ||
| 252 | nanos_s = nanos_s + zeros.substring(0,9-nanos_s.length()); | ||
| 253 | a_nanos = Integer.parseInt(nanos_s); | ||
| 254 | } else if (period > 0) { | ||
| 255 | throw new java.lang.IllegalArgumentException(formatError); | ||
| 256 | } else { | ||
| 257 | second = Integer.parseInt(time_s.substring(secondColon+1)); | ||
| 258 | } | ||
| 259 | } else { | ||
| 260 | throw new java.lang.IllegalArgumentException(formatError); | ||
| 261 | } | ||
| 262 | |||
| 263 | return new Timestamp(year - 1900, month - 1, day, hour, minute, second, a_nanos); | ||
| 264 | } | ||
| 265 | |||
| 266 | /** | ||
| 267 | * Formats a timestamp in JDBC timestamp escape format. | ||
| 268 | * <code>yyyy-mm-dd hh:mm:ss.fffffffff</code>, | ||
| 269 | * where <code>ffffffffff</code> indicates nanoseconds. | ||
| 270 | * <P> | ||
| 271 | * @return a <code>String</code> object in | ||
| 272 | * <code>yyyy-mm-dd hh:mm:ss.fffffffff</code> format | ||
| 273 | */ | ||
| 274 | public String toString () { | ||
| 275 | |||
| 276 | int year = super.getYear() + 1900; | ||
| 277 | int month = super.getMonth() + 1; | ||
| 278 | int day = super.getDate(); | ||
| 279 | int hour = super.getHours(); | ||
| 280 | int minute = super.getMinutes(); | ||
| 281 | int second = super.getSeconds(); | ||
| 282 | String yearString; | ||
| 283 | String monthString; | ||
| 284 | String dayString; | ||
| 285 | String hourString; | ||
| 286 | String minuteString; | ||
| 287 | String secondString; | ||
| 288 | String nanosString; | ||
| 289 | String zeros = "000000000"; | ||
| 290 | String yearZeros = "0000"; | ||
| 291 | StringBuffer timestampBuf; | ||
| 292 | |||
| 293 | if (year < 1000) { | ||
| 294 | // Add leading zeros | ||
| 295 | yearString = "" + year; | ||
| 296 | yearString = yearZeros.substring(0, (4-yearString.length())) + | ||
| 297 | yearString; | ||
| 298 | } else { | ||
| 299 | yearString = "" + year; | ||
| 300 | } | ||
| 301 | if (month < 10) { | ||
| 302 | monthString = "0" + month; | ||
| 303 | } else { | ||
| 304 | monthString = Integer.toString(month); | ||
| 305 | } | ||
| 306 | if (day < 10) { | ||
| 307 | dayString = "0" + day; | ||
| 308 | } else { | ||
| 309 | dayString = Integer.toString(day); | ||
| 310 | } | ||
| 311 | if (hour < 10) { | ||
| 312 | hourString = "0" + hour; | ||
| 313 | } else { | ||
| 314 | hourString = Integer.toString(hour); | ||
| 315 | } | ||
| 316 | if (minute < 10) { | ||
| 317 | minuteString = "0" + minute; | ||
| 318 | } else { | ||
| 319 | minuteString = Integer.toString(minute); | ||
| 320 | } | ||
| 321 | if (second < 10) { | ||
| 322 | secondString = "0" + second; | ||
| 323 | } else { | ||
| 324 | secondString = Integer.toString(second); | ||
| 325 | } | ||
| 326 | if (nanos == 0) { | ||
| 327 | nanosString = "0"; | ||
| 328 | } else { | ||
| 329 | nanosString = Integer.toString(nanos); | ||
| 330 | |||
| 331 | // Add leading zeros | ||
| 332 | nanosString = zeros.substring(0, (9-nanosString.length())) + | ||
| 333 | nanosString; | ||
| 334 | |||
| 335 | // Truncate trailing zeros | ||
| 336 | char[] nanosChar = new char[nanosString.length()]; | ||
| 337 | nanosString.getChars(0, nanosString.length(), nanosChar, 0); | ||
| 338 | int truncIndex = 8; | ||
| 339 | while (nanosChar[truncIndex] == '0') { | ||
| 340 | truncIndex--; | ||
| 341 | } | ||
| 342 | |||
| 343 | nanosString = new String(nanosChar, 0, truncIndex + 1); | ||
| 344 | } | ||
| 345 | |||
| 346 | // do a string buffer here instead. | ||
| 347 | timestampBuf = new StringBuffer(20+nanosString.length()); | ||
| 348 | timestampBuf.append(yearString); | ||
| 349 | timestampBuf.append("-"); | ||
| 350 | timestampBuf.append(monthString); | ||
| 351 | timestampBuf.append("-"); | ||
| 352 | timestampBuf.append(dayString); | ||
| 353 | timestampBuf.append(" "); | ||
| 354 | timestampBuf.append(hourString); | ||
| 355 | timestampBuf.append(":"); | ||
| 356 | timestampBuf.append(minuteString); | ||
| 357 | timestampBuf.append(":"); | ||
| 358 | timestampBuf.append(secondString); | ||
| 359 | timestampBuf.append("."); | ||
| 360 | timestampBuf.append(nanosString); | ||
| 361 | |||
| 362 | return (timestampBuf.toString()); | ||
| 363 | } | ||
| 364 | |||
| 365 | /** | ||
| 366 | * Gets this <code>Timestamp</code> object's <code>nanos</code> value. | ||
| 367 | * | ||
| 368 | * @return this <code>Timestamp</code> object's fractional seconds component | ||
| 369 | * @see #setNanos | ||
| 370 | */ | ||
| 371 | public int getNanos() { | ||
| 372 | return nanos; | ||
| 373 | } | ||
| 374 | |||
| 375 | /** | ||
| 376 | * Sets this <code>Timestamp</code> object's <code>nanos</code> field | ||
| 377 | * to the given value. | ||
| 378 | * | ||
| 379 | * @param n the new fractional seconds component | ||
| 380 | * @exception java.lang.IllegalArgumentException if the given argument | ||
| 381 | * is greater than 999999999 or less than 0 | ||
| 382 | * @see #getNanos | ||
| 383 | */ | ||
| 384 | public void setNanos(int n) { | ||
| 385 | if (n > 999999999 || n < 0) { | ||
| 386 | throw new IllegalArgumentException("nanos > 999999999 or < 0"); | ||
| 387 | } | ||
| 388 | nanos = n; | ||
| 389 | } | ||
| 390 | |||
| 391 | /** | ||
| 392 | * Tests to see if this <code>Timestamp</code> object is | ||
| 393 | * equal to the given <code>Timestamp</code> object. | ||
| 394 | * | ||
| 395 | * @param ts the <code>Timestamp</code> value to compare with | ||
| 396 | * @return <code>true</code> if the given <code>Timestamp</code> | ||
| 397 | * object is equal to this <code>Timestamp</code> object; | ||
| 398 | * <code>false</code> otherwise | ||
| 399 | */ | ||
| 400 | public boolean equals(Timestamp ts) { | ||
| 401 | if (super.equals(ts)) { | ||
| 402 | if (nanos == ts.nanos) { | ||
| 403 | return true; | ||
| 404 | } else { | ||
| 405 | return false; | ||
| 406 | } | ||
| 407 | } else { | ||
| 408 | return false; | ||
| 409 | } | ||
| 410 | } | ||
| 411 | |||
| 412 | /** | ||
| 413 | * Tests to see if this <code>Timestamp</code> object is | ||
| 414 | * equal to the given object. | ||
| 415 | * | ||
| 416 | * This version of the method <code>equals</code> has been added | ||
| 417 | * to fix the incorrect | ||
| 418 | * signature of <code>Timestamp.equals(Timestamp)</code> and to preserve backward | ||
| 419 | * compatibility with existing class files. | ||
| 420 | * | ||
| 421 | * Note: This method is not symmetric with respect to the | ||
| 422 | * <code>equals(Object)</code> method in the base class. | ||
| 423 | * | ||
| 424 | * @param ts the <code>Object</code> value to compare with | ||
| 425 | * @return <code>true</code> if the given <code>Object</code> is an instance | ||
| 426 | * of a <code>Timestamp</code> that | ||
| 427 | * is equal to this <code>Timestamp</code> object; | ||
| 428 | * <code>false</code> otherwise | ||
| 429 | */ | ||
| 430 | public boolean equals(java.lang.Object ts) { | ||
| 431 | if (ts instanceof Timestamp) { | ||
| 432 | return this.equals((Timestamp)ts); | ||
| 433 | } else { | ||
| 434 | return false; | ||
| 435 | } | ||
| 436 | } | ||
| 437 | |||
| 438 | /** | ||
| 439 | * Indicates whether this <code>Timestamp</code> object is | ||
| 440 | * earlier than the given <code>Timestamp</code> object. | ||
| 441 | * | ||
| 442 | * @param ts the <code>Timestamp</code> value to compare with | ||
| 443 | * @return <code>true</code> if this <code>Timestamp</code> object is earlier; | ||
| 444 | * <code>false</code> otherwise | ||
| 445 | */ | ||
| 446 | public boolean before(Timestamp ts) { | ||
| 447 | return compareTo(ts) < 0; | ||
| 448 | } | ||
| 449 | |||
| 450 | /** | ||
| 451 | * Indicates whether this <code>Timestamp</code> object is | ||
| 452 | * later than the given <code>Timestamp</code> object. | ||
| 453 | * | ||
| 454 | * @param ts the <code>Timestamp</code> value to compare with | ||
| 455 | * @return <code>true</code> if this <code>Timestamp</code> object is later; | ||
| 456 | * <code>false</code> otherwise | ||
| 457 | */ | ||
| 458 | public boolean after(Timestamp ts) { | ||
| 459 | return compareTo(ts) > 0; | ||
| 460 | } | ||
| 461 | |||
| 462 | /** | ||
| 463 | * Compares this <code>Timestamp</code> object to the given | ||
| 464 | * <code>Timestamp</code> object. | ||
| 465 | * | ||
| 466 | * @param ts the <code>Timestamp</code> object to be compared to | ||
| 467 | * this <code>Timestamp</code> object | ||
| 468 | * @return the value <code>0</code> if the two <code>Timestamp</code> | ||
| 469 | * objects are equal; a value less than <code>0</code> if this | ||
| 470 | * <code>Timestamp</code> object is before the given argument; | ||
| 471 | * and a value greater than <code>0</code> if this | ||
| 472 | * <code>Timestamp</code> object is after the given argument. | ||
| 473 | * @since 1.4 | ||
| 474 | */ | ||
| 475 | public int compareTo(Timestamp ts) { | ||
| 476 | long thisTime = this.getTime(); | ||
| 477 | long anotherTime = ts.getTime(); | ||
| 478 | int i = (thisTime<anotherTime ? -1 :(thisTime==anotherTime?0 :1)); | ||
| 479 | if (i == 0) { | ||
| 480 | if (nanos > ts.nanos) { | ||
| 481 | return 1; | ||
| 482 | } else if (nanos < ts.nanos) { | ||
| 483 | return -1; | ||
| 484 | } | ||
| 485 | } | ||
| 486 | return i; | ||
| 487 | |||
| 488 | } | ||
| 489 | |||
| 490 | /** | ||
| 491 | * Compares this <code>Timestamp</code> object to the given | ||
| 492 | * <code>Date</code> object. | ||
| 493 | * | ||
| 494 | * @param o the <code>Date</code> to be compared to | ||
| 495 | * this <code>Timestamp</code> object | ||
| 496 | * @return the value <code>0</code> if this <code>Timestamp</code> object | ||
| 497 | * and the given object are equal; a value less than <code>0</code> | ||
| 498 | * if this <code>Timestamp</code> object is before the given argument; | ||
| 499 | * and a value greater than <code>0</code> if this | ||
| 500 | * <code>Timestamp</code> object is after the given argument. | ||
| 501 | * | ||
| 502 | * @since 1.5 | ||
| 503 | */ | ||
| 504 | public int compareTo(java.util.Date o) { | ||
| 505 | if(o instanceof Timestamp) { | ||
| 506 | // When Timestamp instance compare it with a Timestamp | ||
| 507 | // Hence it is basically calling this.compareTo((Timestamp))o); | ||
| 508 | // Note typecasting is safe because o is instance of Timestamp | ||
| 509 | return compareTo((Timestamp)o); | ||
| 510 | } else { | ||
| 511 | // When Date doing a o.compareTo(this) | ||
| 512 | // will give wrong results. | ||
| 513 | Timestamp ts = new Timestamp(o.getTime()); | ||
| 514 | return this.compareTo(ts); | ||
| 515 | } | ||
| 516 | } | ||
| 517 | |||
| 518 | /** | ||
| 519 | * {@inheritDoc} | ||
| 520 | * | ||
| 521 | * The {@code hashCode} method uses the underlying {@code java.util.Date} | ||
| 522 | * implementation and therefore does not include nanos in its computation. | ||
| 523 | * | ||
| 524 | */ | ||
| 525 | @Override | ||
| 526 | public int hashCode() { | ||
| 527 | return super.hashCode(); | ||
| 528 | } | ||
| 529 | |||
| 530 | static final long serialVersionUID = 2745179027874758501L; | ||
| 531 | |||
| 532 | } | ||