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307 lines
9.5 KiB
307 lines
9.5 KiB
/*
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* Copyright (c) 1996, 2013, Oracle and/or its affiliates. All rights reserved.
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*
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*
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*
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*
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*
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*
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*
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*
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*/
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package java.sql;
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import java.time.Instant;
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import java.time.LocalDate;
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/**
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* <P>A thin wrapper around a millisecond value that allows
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* JDBC to identify this as an SQL <code>DATE</code> value. A
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* milliseconds value represents the number of milliseconds that
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* have passed since January 1, 1970 00:00:00.000 GMT.
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* <p>
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* To conform with the definition of SQL <code>DATE</code>, the
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* millisecond values wrapped by a <code>java.sql.Date</code> instance
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* must be 'normalized' by setting the
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* hours, minutes, seconds, and milliseconds to zero in the particular
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* time zone with which the instance is associated.
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*/
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public class Date extends java.util.Date {
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/**
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* Constructs a <code>Date</code> object initialized with the given
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* year, month, and day.
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* <P>
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* The result is undefined if a given argument is out of bounds.
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*
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* @param year the year minus 1900; must be 0 to 8099. (Note that
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* 8099 is 9999 minus 1900.)
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* @param month 0 to 11
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* @param day 1 to 31
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* @deprecated instead use the constructor <code>Date(long date)</code>
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*/
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@Deprecated
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public Date(int year, int month, int day) {
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super(year, month, day);
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}
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/**
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* Constructs a <code>Date</code> object using the given milliseconds
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* time value. If the given milliseconds value contains time
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* information, the driver will set the time components to the
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* time in the default time zone (the time zone of the Java virtual
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* machine running the application) that corresponds to zero GMT.
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*
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* @param date milliseconds since January 1, 1970, 00:00:00 GMT not
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* to exceed the milliseconds representation for the year 8099.
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* A negative number indicates the number of milliseconds
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* before January 1, 1970, 00:00:00 GMT.
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*/
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public Date(long date) {
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// If the millisecond date value contains time info, mask it out.
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super(date);
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}
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/**
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* Sets an existing <code>Date</code> object
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* using the given milliseconds time value.
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* If the given milliseconds value contains time information,
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* the driver will set the time components to the
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* time in the default time zone (the time zone of the Java virtual
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* machine running the application) that corresponds to zero GMT.
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*
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* @param date milliseconds since January 1, 1970, 00:00:00 GMT not
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* to exceed the milliseconds representation for the year 8099.
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* A negative number indicates the number of milliseconds
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* before January 1, 1970, 00:00:00 GMT.
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*/
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public void setTime(long date) {
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// If the millisecond date value contains time info, mask it out.
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super.setTime(date);
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}
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/**
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* Converts a string in JDBC date escape format to
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* a <code>Date</code> value.
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*
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* @param s a <code>String</code> object representing a date in
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* in the format "yyyy-[m]m-[d]d". The leading zero for <code>mm</code>
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* and <code>dd</code> may also be omitted.
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* @return a <code>java.sql.Date</code> object representing the
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* given date
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* @throws IllegalArgumentException if the date given is not in the
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* JDBC date escape format (yyyy-[m]m-[d]d)
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*/
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public static Date valueOf(String s) {
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final int YEAR_LENGTH = 4;
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final int MONTH_LENGTH = 2;
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final int DAY_LENGTH = 2;
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final int MAX_MONTH = 12;
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final int MAX_DAY = 31;
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int firstDash;
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int secondDash;
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Date d = null;
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if (s == null) {
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throw new java.lang.IllegalArgumentException();
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}
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firstDash = s.indexOf('-');
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secondDash = s.indexOf('-', firstDash + 1);
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if ((firstDash > 0) && (secondDash > 0) && (secondDash < s.length() - 1)) {
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String yyyy = s.substring(0, firstDash);
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String mm = s.substring(firstDash + 1, secondDash);
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String dd = s.substring(secondDash + 1);
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if (yyyy.length() == YEAR_LENGTH &&
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(mm.length() >= 1 && mm.length() <= MONTH_LENGTH) &&
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(dd.length() >= 1 && dd.length() <= DAY_LENGTH)) {
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int year = Integer.parseInt(yyyy);
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int month = Integer.parseInt(mm);
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int day = Integer.parseInt(dd);
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if ((month >= 1 && month <= MAX_MONTH) && (day >= 1 && day <= MAX_DAY)) {
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d = new Date(year - 1900, month - 1, day);
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}
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}
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}
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if (d == null) {
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throw new java.lang.IllegalArgumentException();
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}
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return d;
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}
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/**
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* Formats a date in the date escape format yyyy-mm-dd.
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* <P>
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* @return a String in yyyy-mm-dd format
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*/
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@SuppressWarnings("deprecation")
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public String toString () {
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int year = super.getYear() + 1900;
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int month = super.getMonth() + 1;
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int day = super.getDate();
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char buf[] = "2000-00-00".toCharArray();
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buf[0] = Character.forDigit(year/1000,10);
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buf[1] = Character.forDigit((year/100)%10,10);
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buf[2] = Character.forDigit((year/10)%10,10);
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buf[3] = Character.forDigit(year%10,10);
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buf[5] = Character.forDigit(month/10,10);
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buf[6] = Character.forDigit(month%10,10);
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buf[8] = Character.forDigit(day/10,10);
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buf[9] = Character.forDigit(day%10,10);
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return new String(buf);
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}
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// Override all the time operations inherited from java.util.Date;
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/**
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* This method is deprecated and should not be used because SQL Date
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* values do not have a time component.
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*
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* @deprecated
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* @exception java.lang.IllegalArgumentException if this method is invoked
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* @see #setHours
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*/
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@Deprecated
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public int getHours() {
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throw new java.lang.IllegalArgumentException();
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}
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/**
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* This method is deprecated and should not be used because SQL Date
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* values do not have a time component.
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*
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* @deprecated
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* @exception java.lang.IllegalArgumentException if this method is invoked
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* @see #setMinutes
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*/
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@Deprecated
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public int getMinutes() {
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throw new java.lang.IllegalArgumentException();
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}
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/**
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* This method is deprecated and should not be used because SQL Date
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* values do not have a time component.
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*
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* @deprecated
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* @exception java.lang.IllegalArgumentException if this method is invoked
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* @see #setSeconds
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*/
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@Deprecated
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public int getSeconds() {
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throw new java.lang.IllegalArgumentException();
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}
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/**
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* This method is deprecated and should not be used because SQL Date
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* values do not have a time component.
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*
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* @deprecated
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* @exception java.lang.IllegalArgumentException if this method is invoked
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* @see #getHours
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*/
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@Deprecated
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public void setHours(int i) {
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throw new java.lang.IllegalArgumentException();
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}
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/**
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* This method is deprecated and should not be used because SQL Date
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* values do not have a time component.
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*
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* @deprecated
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* @exception java.lang.IllegalArgumentException if this method is invoked
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* @see #getMinutes
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*/
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@Deprecated
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public void setMinutes(int i) {
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throw new java.lang.IllegalArgumentException();
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}
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/**
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* This method is deprecated and should not be used because SQL Date
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* values do not have a time component.
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*
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* @deprecated
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* @exception java.lang.IllegalArgumentException if this method is invoked
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* @see #getSeconds
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*/
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@Deprecated
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public void setSeconds(int i) {
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throw new java.lang.IllegalArgumentException();
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}
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/**
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* Private serial version unique ID to ensure serialization
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* compatibility.
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*/
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static final long serialVersionUID = 1511598038487230103L;
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/**
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* Obtains an instance of {@code Date} from a {@link LocalDate} object
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* with the same year, month and day of month value as the given
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* {@code LocalDate}.
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* <p>
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* The provided {@code LocalDate} is interpreted as the local date
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* in the local time zone.
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*
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* @param date a {@code LocalDate} to convert
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* @return a {@code Date} object
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* @exception NullPointerException if {@code date} is null
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* @since 1.8
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*/
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@SuppressWarnings("deprecation")
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public static Date valueOf(LocalDate date) {
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return new Date(date.getYear() - 1900, date.getMonthValue() -1,
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date.getDayOfMonth());
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}
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/**
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* Converts this {@code Date} object to a {@code LocalDate}
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* <p>
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* The conversion creates a {@code LocalDate} that represents the same
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* date value as this {@code Date} in local time zone
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*
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* @return a {@code LocalDate} object representing the same date value
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*
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* @since 1.8
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*/
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@SuppressWarnings("deprecation")
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public LocalDate toLocalDate() {
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return LocalDate.of(getYear() + 1900, getMonth() + 1, getDate());
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}
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/**
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* This method always throws an UnsupportedOperationException and should
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* not be used because SQL {@code Date} values do not have a time
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* component.
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*
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* @exception java.lang.UnsupportedOperationException if this method is invoked
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*/
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@Override
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public Instant toInstant() {
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throw new java.lang.UnsupportedOperationException();
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}
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}
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