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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

package java.sql;

import java.time.Instant;

import java.time.LocalDate;

/**

 * <P>A thin wrapper around a millisecond value that allows

 * JDBC to identify this as an SQL <code>DATE</code> value.  A

 * milliseconds value represents the number of milliseconds that

 * have passed since January 1, 1970 00:00:00.000 GMT.

 * <p>

 * To conform with the definition of SQL <code>DATE</code>, the

 * millisecond values wrapped by a <code>java.sql.Date</code> instance

 * must be 'normalized' by setting the

 * hours, minutes, seconds, and milliseconds to zero in the particular

 * time zone with which the instance is associated.

 *

 * @since 1.1

 */

public class Date extends java.util.Date {

    /**

     * Constructs a <code>Date</code> object initialized with the given

     * year, month, and day.

     * <P>

     * The result is undefined if a given argument is out of bounds.

     *

     * @param year the year minus 1900; must be 0 to 8099. (Note that

     *        8099 is 9999 minus 1900.)

     * @param month 0 to 11

     * @param day 1 to 31

     * @deprecated instead use the constructor <code>Date(long date)</code>

     */

    @Deprecated(since="1.2")

    public Date(int year, int month, int day) {

        super(year, month, day);

    }

    /**

     * Constructs a <code>Date</code> object using the given milliseconds

     * time value.  If the given milliseconds value contains time

     * information, the driver will set the time components to the

     * time in the default time zone (the time zone of the Java virtual

     * machine running the application) that corresponds to zero GMT.

     *

     * @param date milliseconds since January 1, 1970, 00:00:00 GMT not

     *        to exceed the milliseconds representation for the year 8099.

     *        A negative number indicates the number of milliseconds

     *        before January 1, 1970, 00:00:00 GMT.

     */

    public Date(long date) {

        // If the millisecond date value contains time info, mask it out.

        super(date);

    }

    /**

     * Sets an existing <code>Date</code> object

     * using the given milliseconds time value.

     * If the given milliseconds value contains time information,

     * the driver will set the time components to the

     * time in the default time zone (the time zone of the Java virtual

     * machine running the application) that corresponds to zero GMT.

     *

     * @param date milliseconds since January 1, 1970, 00:00:00 GMT not

     *        to exceed the milliseconds representation for the year 8099.

     *        A negative number indicates the number of milliseconds

     *        before January 1, 1970, 00:00:00 GMT.

     */

    public void setTime(long date) {

        // If the millisecond date value contains time info, mask it out.

        super.setTime(date);

    }

    /**

     * Converts a string in JDBC date escape format to

     * a <code>Date</code> value.

     *

     * @param s a <code>String</code> object representing a date in

     *        in the format "yyyy-[m]m-[d]d". The leading zero for <code>mm</code>

     * and <code>dd</code> may also be omitted.

     * @return a <code>java.sql.Date</code> object representing the

     *         given date

     * @throws IllegalArgumentException if the date given is not in the

     *         JDBC date escape format (yyyy-[m]m-[d]d)

     */

    public static Date valueOf(String s) {

        if (s == null) {

            throw new java.lang.IllegalArgumentException();

        }

        final int YEAR_LENGTH = 4;

        final int MONTH_LENGTH = 2;

        final int DAY_LENGTH = 2;

        final int MAX_MONTH = 12;

        final int MAX_DAY = 31;

        Date d = null;

        int firstDash = s.indexOf('-');

        int secondDash = s.indexOf('-', firstDash + 1);

        int len = s.length();

        if ((firstDash > 0) && (secondDash > 0) && (secondDash < len - 1)) {

            if (firstDash == YEAR_LENGTH &&

                    (secondDash - firstDash > 1 && secondDash - firstDash <= MONTH_LENGTH + 1) &&

                    (len - secondDash > 1 && len - secondDash <= DAY_LENGTH + 1)) {

                int year = Integer.parseInt(s, 0, firstDash, 10);

                int month = Integer.parseInt(s, firstDash + 1, secondDash, 10);

                int day = Integer.parseInt(s, secondDash + 1, len, 10);

                if ((month >= 1 && month <= MAX_MONTH) && (day >= 1 && day <= MAX_DAY)) {

                    d = new Date(year - 1900, month - 1, day);

                }

            }

        }

        if (d == null) {

            throw new java.lang.IllegalArgumentException();

        }

        return d;

    }

    /**

     * Formats a date in the date escape format yyyy-mm-dd.

     *

     * @return a String in yyyy-mm-dd format

     */

    @SuppressWarnings("deprecation")

    public String toString () {

        int year = super.getYear() + 1900;

        int month = super.getMonth() + 1;

        int day = super.getDate();

        char buf[] = new char[10];

        formatDecimalInt(year, buf, 0, 4);

        buf[4] = '-';

        Date.formatDecimalInt(month, buf, 5, 2);

        buf[7] = '-';

        Date.formatDecimalInt(day, buf, 8, 2);

        return new String(buf);

    }

    /**

     * Formats an unsigned integer into a char array in decimal output format.

     * Numbers will be zero-padded or truncated if the string representation

     * of the integer is smaller than or exceeds len, respectively.

     *

     * Should consider moving this to Integer and expose it through

     * JavaLangAccess similar to Integer::formatUnsignedInt

     * @param val  Value to convert

     * @param buf  Array containing converted value

     * @param offset Starting pos in buf

     * @param len  length of output value

     */

    static void formatDecimalInt(int val, char[] buf, int offset, int len) {

        int charPos = offset + len;

        do {

            buf[--charPos] = (char)('0' + (val % 10));

            val /= 10;

        } while (charPos > offset);

    }

    // Override all the time operations inherited from java.util.Date;

   /**

    * This method is deprecated and should not be used because SQL Date

    * values do not have a time component.

    *

    * @deprecated

    * @exception java.lang.IllegalArgumentException if this method is invoked

    * @see #setHours

    */

    @Deprecated(since="1.2")

    public int getHours() {

        throw new java.lang.IllegalArgumentException();

    }

   /**

    * This method is deprecated and should not be used because SQL Date

    * values do not have a time component.

    *

    * @deprecated

    * @exception java.lang.IllegalArgumentException if this method is invoked

    * @see #setMinutes

    */

    @Deprecated(since="1.2")

    public int getMinutes() {

        throw new java.lang.IllegalArgumentException();

    }

   /**

    * This method is deprecated and should not be used because SQL Date

    * values do not have a time component.

    *

    * @deprecated

    * @exception java.lang.IllegalArgumentException if this method is invoked

    * @see #setSeconds

    */

    @Deprecated(since="1.2")

    public int getSeconds() {

        throw new java.lang.IllegalArgumentException();

    }

   /**

    * This method is deprecated and should not be used because SQL Date

    * values do not have a time component.

    *

    * @deprecated

    * @exception java.lang.IllegalArgumentException if this method is invoked

    * @see #getHours

    */

    @Deprecated(since="1.2")

    public void setHours(int i) {

        throw new java.lang.IllegalArgumentException();

    }

   /**

    * This method is deprecated and should not be used because SQL Date

    * values do not have a time component.

    *

    * @deprecated

    * @exception java.lang.IllegalArgumentException if this method is invoked

    * @see #getMinutes

    */

    @Deprecated(since="1.2")

    public void setMinutes(int i) {

        throw new java.lang.IllegalArgumentException();

    }

   /**

    * This method is deprecated and should not be used because SQL Date

    * values do not have a time component.

    *

    * @deprecated

    * @exception java.lang.IllegalArgumentException if this method is invoked

    * @see #getSeconds

    */

    @Deprecated(since="1.2")

    public void setSeconds(int i) {

        throw new java.lang.IllegalArgumentException();

    }

   /**

    * Private serial version unique ID to ensure serialization

    * compatibility.

    */

    static final long serialVersionUID = 1511598038487230103L;

    /**

     * Obtains an instance of {@code Date} from a {@link LocalDate} object

     * with the same year, month and day of month value as the given

     * {@code LocalDate}.

     * <p>

     * The provided {@code LocalDate} is interpreted as the local date

     * in the local time zone.

     *

     * @param date a {@code LocalDate} to convert

     * @return a {@code Date} object

     * @exception NullPointerException if {@code date} is null

     * @since 1.8

     */

    @SuppressWarnings("deprecation")

    public static Date valueOf(LocalDate date) {

        return new Date(date.getYear() - 1900, date.getMonthValue() -1,

                        date.getDayOfMonth());

    }

    /**

     * Creates a {@code LocalDate} instance using the year, month and day

     * from this {@code Date} object.

     * @return a {@code LocalDate} object representing the same date value

     *

     * @since 1.8

     */

    @SuppressWarnings("deprecation")

    public LocalDate toLocalDate() {

        return LocalDate.of(getYear() + 1900, getMonth() + 1, getDate());

    }

   /**

    * This method always throws an UnsupportedOperationException and should

    * not be used because SQL {@code Date} values do not have a time

    * component.

    *

    * @exception java.lang.UnsupportedOperationException if this method is invoked

    */

    @Override

    public Instant toInstant() {

        throw new java.lang.UnsupportedOperationException();

    }

}