- /*
- * @(#)Timestamp.java 1.58 04/05/18
- *
- * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
- * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
- */
-
- package java.sql;
-
- /**
- * <P>A thin wrapper around <code>java.util.Date</code> that allows
- * the JDBC API to identify this as an SQL <code>TIMESTAMP</code> value.
- * It adds the ability
- * to hold the SQL <code>TIMESTAMP</code> nanos value and provides formatting and
- * parsing operations to support the JDBC escape syntax for timestamp values.
- *
- * <P><B>Note:</B> This type is a composite of a <code>java.util.Date</code> and a
- * separate nanoseconds value. Only integral seconds are stored in the
- * <code>java.util.Date</code> component. The fractional seconds - the nanos - are
- * separate. The <code>Timestamp.equals(Object)</code> method never returns
- * <code>true</code> when passed a value of type <code>java.util.Date</code>
- * because the nanos component of a date is unknown.
- * As a result, the <code>Timestamp.equals(Object)</code>
- * method is not symmetric with respect to the
- * <code>java.util.Date.equals(Object)</code>
- * method. Also, the <code>hashcode</code> method uses the underlying
- * <code>java.util.Date</code>
- * implementation and therefore does not include nanos in its computation.
- * <P>
- * Due to the differences between the <code>Timestamp</code> class
- * and the <code>java.util.Date</code>
- * class mentioned above, it is recommended that code not view
- * <code>Timestamp</code> values generically as an instance of
- * <code>java.util.Date</code>. The
- * inheritance relationship between <code>Timestamp</code>
- * and <code>java.util.Date</code> really
- * denotes implementation inheritance, and not type inheritance.
- */
- public class Timestamp extends java.util.Date {
-
- /**
- * Constructs a <code>Timestamp</code> object initialized
- * with the given values.
- *
- * @param year the year minus 1900
- * @param month 0 to 11
- * @param date 1 to 31
- * @param hour 0 to 23
- * @param minute 0 to 59
- * @param second 0 to 59
- * @param nano 0 to 999,999,999
- * @deprecated instead use the constructor <code>Timestamp(long millis)</code>
- * @exception IllegalArgumentException if the nano argument is out of bounds
- */
- @Deprecated
- public Timestamp(int year, int month, int date,
- int hour, int minute, int second, int nano) {
- super(year, month, date, hour, minute, second);
- if (nano > 999999999 || nano < 0) {
- throw new IllegalArgumentException("nanos > 999999999 or < 0");
- }
- nanos = nano;
- }
-
- /**
- * Constructs a <code>Timestamp</code> object
- * using a milliseconds time value. The
- * integral seconds are stored in the underlying date value; the
- * fractional seconds are stored in the <code>nanos</code> field of
- * the <code>Timestamp</code> object.
- *
- * @param time milliseconds since January 1, 1970, 00:00:00 GMT.
- * A negative number is the number of milliseconds before
- * January 1, 1970, 00:00:00 GMT.
- * @see java.util.Calendar for more information
- */
- public Timestamp(long time) {
- super((time1000)*1000);
- nanos = (int)((time%1000) * 1000000);
- if (nanos < 0) {
- nanos = 1000000000 + nanos;
- super.setTime(((time1000)-1)*1000);
- }
- }
-
- /**
- * Sets this <code>Timestamp</code> object to represent a point in time that is
- * <tt>time</tt> milliseconds after January 1, 1970 00:00:00 GMT.
- *
- * @param time the number of milliseconds.
- * @see #getTime
- * @see #Timestamp(long time)
- * @see java.util.Calendar for more information
- */
- public void setTime(long time) {
- super.setTime((time1000)*1000);
- nanos = (int)((time%1000) * 1000000);
- if (nanos < 0) {
- nanos = 1000000000 + nanos;
- super.setTime(((time1000)-1)*1000);
- }
- }
-
- /**
- * Returns the number of milliseconds since January 1, 1970, 00:00:00 GMT
- * represented by this <code>Timestamp</code> object.
- *
- * @return the number of milliseconds since January 1, 1970, 00:00:00 GMT
- * represented by this date.
- * @see #setTime
- */
- public long getTime() {
- long time = super.getTime();
- return (time + (nanos / 1000000));
- }
-
-
- /**
- * @serial
- */
- private int nanos;
-
- /**
- * Converts a <code>String</code> object in JDBC timestamp escape format to a
- * <code>Timestamp</code> value.
- *
- * @param s timestamp in format <code>yyyy-mm-dd hh:mm:ss.fffffffff</code>
- * @return corresponding <code>Timestamp</code> value
- * @exception java.lang.IllegalArgumentException if the given argument
- * does not have the format <code>yyyy-mm-dd hh:mm:ss.fffffffff</code>
- */
- public static Timestamp valueOf(String s) {
- String date_s;
- String time_s;
- String nanos_s;
- int year;
- int month;
- int day;
- int hour;
- int minute;
- int second;
- int a_nanos = 0;
- int firstDash;
- int secondDash;
- int dividingSpace;
- int firstColon = 0;
- int secondColon = 0;
- int period = 0;
- String formatError = "Timestamp format must be yyyy-mm-dd hh:mm:ss.fffffffff";
- String zeros = "000000000";
-
- if (s == null) throw new java.lang.IllegalArgumentException("null string");
-
- // Split the string into date and time components
- s = s.trim();
- dividingSpace = s.indexOf(' ');
- if (dividingSpace > 0) {
- date_s = s.substring(0,dividingSpace);
- time_s = s.substring(dividingSpace+1);
- } else {
- throw new java.lang.IllegalArgumentException(formatError);
- }
-
-
- // Parse the date
- firstDash = date_s.indexOf('-');
- secondDash = date_s.indexOf('-', firstDash+1);
-
- // Parse the time
- if (time_s == null)
- throw new java.lang.IllegalArgumentException(formatError);
- firstColon = time_s.indexOf(':');
- secondColon = time_s.indexOf(':', firstColon+1);
- period = time_s.indexOf('.', secondColon+1);
-
- // Convert the date
- if ((firstDash > 0) & (secondDash > 0) &
- (secondDash < date_s.length()-1)) {
- year = Integer.parseInt(date_s.substring(0, firstDash)) - 1900;
- month =
- Integer.parseInt(date_s.substring
- (firstDash+1, secondDash)) - 1;
- day = Integer.parseInt(date_s.substring(secondDash+1));
- } else {
- throw new java.lang.IllegalArgumentException(formatError);
- }
-
- // Convert the time; default missing nanos
- if ((firstColon > 0) & (secondColon > 0) &
- (secondColon < time_s.length()-1)) {
- hour = Integer.parseInt(time_s.substring(0, firstColon));
- minute =
- Integer.parseInt(time_s.substring(firstColon+1, secondColon));
- if ((period > 0) & (period < time_s.length()-1)) {
- second =
- Integer.parseInt(time_s.substring(secondColon+1, period));
- nanos_s = time_s.substring(period+1);
- if (nanos_s.length() > 9)
- throw new java.lang.IllegalArgumentException(formatError);
- if (!Character.isDigit(nanos_s.charAt(0)))
- throw new java.lang.IllegalArgumentException(formatError);
- nanos_s = nanos_s + zeros.substring(0,9-nanos_s.length());
- a_nanos = Integer.parseInt(nanos_s);
- } else if (period > 0) {
- throw new java.lang.IllegalArgumentException(formatError);
- } else {
- second = Integer.parseInt(time_s.substring(secondColon+1));
- }
- } else {
- throw new java.lang.IllegalArgumentException();
- }
-
- return new Timestamp(year, month, day, hour, minute, second, a_nanos);
- }
-
- /**
- * Formats a timestamp in JDBC timestamp escape format.
- * <code>yyyy-mm-dd hh:mm:ss.fffffffff</code>,
- * where <code>ffffffffff</code> indicates nanoseconds.
- * <P>
- * NOTE: To specify a timestamp for the class
- * <code>java.text.SimpleDateFormat</code>, use "yyyy.MM.dd" rather than
- * "yyyy-mm-dd". In the context of <code>java.text.SimpleDateFormat</code>,
- * "mm" indicates minutes rather than the month. Note that
- * <code>java.text.SimpleDateFormat</code> does not allow for the
- * nanoseconds component of a <code>Timestamp</code> object.
- * For Example:
- * <PRE>
- *
- * Format Pattern Result
- * -------------- ------
- * "yyyy.MM.dd G 'at' hh:mm:ss z" --> 2002.07.10 AD at 15:08:56 PDT
- *
- * </PRE>
- * @return a <code>String</code> object in
- * <code>yyyy-mm-dd hh:mm:ss.fffffffff</code> format
- */
- public String toString () {
-
- int year = super.getYear() + 1900;
- int month = super.getMonth() + 1;
- int day = super.getDate();
- int hour = super.getHours();
- int minute = super.getMinutes();
- int second = super.getSeconds();
- String yearString;
- String monthString;
- String dayString;
- String hourString;
- String minuteString;
- String secondString;
- String nanosString;
- String zeros = "000000000";
- String yearZeros = "0000";
- StringBuffer timestampBuf;
-
- if (year < 1000) {
- // Add leading zeros
- yearString = "" + year;
- yearString = yearZeros.substring(0, (4-yearString.length())) +
- yearString;
- } else {
- yearString = "" + year;
- }
- if (month < 10) {
- monthString = "0" + month;
- } else {
- monthString = Integer.toString(month);
- }
- if (day < 10) {
- dayString = "0" + day;
- } else {
- dayString = Integer.toString(day);
- }
- if (hour < 10) {
- hourString = "0" + hour;
- } else {
- hourString = Integer.toString(hour);
- }
- if (minute < 10) {
- minuteString = "0" + minute;
- } else {
- minuteString = Integer.toString(minute);
- }
- if (second < 10) {
- secondString = "0" + second;
- } else {
- secondString = Integer.toString(second);
- }
- if (nanos == 0) {
- nanosString = "0";
- } else {
- nanosString = Integer.toString(nanos);
-
- // Add leading zeros
- nanosString = zeros.substring(0, (9-nanosString.length())) +
- nanosString;
-
- // Truncate trailing zeros
- char[] nanosChar = new char[nanosString.length()];
- nanosString.getChars(0, nanosString.length(), nanosChar, 0);
- int truncIndex = 8;
- while (nanosChar[truncIndex] == '0') {
- truncIndex--;
- }
-
- nanosString = new String(nanosChar, 0, truncIndex + 1);
- }
-
- // do a string buffer here instead.
- timestampBuf = new StringBuffer();
- timestampBuf.append(yearString);
- timestampBuf.append("-");
- timestampBuf.append(monthString);
- timestampBuf.append("-");
- timestampBuf.append(dayString);
- timestampBuf.append(" ");
- timestampBuf.append(hourString);
- timestampBuf.append(":");
- timestampBuf.append(minuteString);
- timestampBuf.append(":");
- timestampBuf.append(secondString);
- timestampBuf.append(".");
- timestampBuf.append(nanosString);
-
- return (timestampBuf.toString());
- }
-
- /**
- * Gets this <code>Timestamp</code> object's <code>nanos</code> value.
- *
- * @return this <code>Timestamp</code> object's fractional seconds component
- * @see #setNanos
- */
- public int getNanos() {
- return nanos;
- }
-
- /**
- * Sets this <code>Timestamp</code> object's <code>nanos</code> field
- * to the given value.
- *
- * @param n the new fractional seconds component
- * @exception java.lang.IllegalArgumentException if the given argument
- * is greater than 999999999 or less than 0
- * @see #getNanos
- */
- public void setNanos(int n) {
- if (n > 999999999 || n < 0) {
- throw new IllegalArgumentException("nanos > 999999999 or < 0");
- }
- nanos = n;
- }
-
- /**
- * Tests to see if this <code>Timestamp</code> object is
- * equal to the given <code>Timestamp</code> object.
- *
- * @param ts the <code>Timestamp</code> value to compare with
- * @return <code>true</code> if the given <code>Timestamp</code>
- * object is equal to this <code>Timestamp</code> object;
- * <code>false</code> otherwise
- */
- public boolean equals(Timestamp ts) {
- if (super.equals(ts)) {
- if (nanos == ts.nanos) {
- return true;
- } else {
- return false;
- }
- } else {
- return false;
- }
- }
-
- /**
- * Tests to see if this <code>Timestamp</code> object is
- * equal to the given object.
- *
- * This version of the method <code>equals</code> has been added
- * to fix the incorrect
- * signature of <code>Timestamp.equals(Timestamp)</code> and to preserve backward
- * compatibility with existing class files.
- *
- * Note: This method is not symmetric with respect to the
- * <code>equals(Object)</code> method in the base class.
- *
- * @param ts the <code>Object</code> value to compare with
- * @return <code>true</code> if the given <code>Object</code>
- * instance is equal to this <code>Timestamp</code> object;
- * <code>false</code> otherwise
- */
- public boolean equals(java.lang.Object ts) {
- if (ts instanceof Timestamp) {
- return this.equals((Timestamp)ts);
- } else {
- return false;
- }
- }
-
- /**
- * Indicates whether this <code>Timestamp</code> object is
- * earlier than the given <code>Timestamp</code> object.
- *
- * @param ts the <code>Timestamp</code> value to compare with
- * @return <code>true</code> if this <code>Timestamp</code> object is earlier;
- * <code>false</code> otherwise
- */
- public boolean before(Timestamp ts) {
- return compareTo(ts) < 0;
- }
-
- /**
- * Indicates whether this <code>Timestamp</code> object is
- * later than the given <code>Timestamp</code> object.
- *
- * @param ts the <code>Timestamp</code> value to compare with
- * @return <code>true</code> if this <code>Timestamp</code> object is later;
- * <code>false</code> otherwise
- */
- public boolean after(Timestamp ts) {
- return compareTo(ts) > 0;
- }
-
- /**
- * Compares this <code>Timestamp</code> object to the given
- * <code>Timestamp</code> object.
- *
- * @param ts the <code>Timestamp</code> object to be compared to
- * this <code>Timestamp</code> object
- * @return the value <code>0</code> if the two <code>Timestamp</code>
- * objects are equal; a value less than <code>0</code> if this
- * <code>Timestamp</code> object is before the given argument;
- * and a value greater than <code>0</code> if this
- * <code>Timestamp</code> object is after the given argument.
- * @since 1.2
- */
- public int compareTo(Timestamp ts) {
- int i = super.compareTo(ts);
- if (i == 0) {
- if (nanos > ts.nanos) {
- return 1;
- } else if (nanos < ts.nanos) {
- return -1;
- }
- }
- return i;
-
- }
-
- /**
- * Compares this <code>Timestamp</code> object to the given
- * <code>Date</code>, which must be a <code>Timestamp</code>
- * object. If the argument is not a <code>Timestamp</code> object,
- * this method throws a <code>ClassCastException</code> object.
- * (<code>Timestamp</code> objects are
- * comparable only to other <code>Timestamp</code> objects.)
- *
- * @param o the <code>Date</code> to be compared, which must be a
- * <code>Timestamp</code> object
- * @return the value <code>0</code> if this <code>Timestamp</code> object
- * and the given object are equal; a value less than <code>0</code>
- * if this <code>Timestamp</code> object is before the given argument;
- * and a value greater than <code>0</code> if this
- * <code>Timestamp</code> object is after the given argument.
- *
- * @exception ClassCastException if the argument is not a
- * <code>Timestamp</code> object
- * @since 1.5
- */
- // This forwarding method ensures that the compareTo(Date) method defined
- // in java.util.Date is not invoked on a Timestamp
- public int compareTo(java.util.Date o) {
- return compareTo((Timestamp)o);
- }
-
-
-
-
- static final long serialVersionUID = 2745179027874758501L;
-
- }
-