source: trunk/src/gcc/libjava/java/sql/Timestamp.java@ 2071

/* Time.java -- Wrapper around java.util.Date
   Copyright (C) 1999, 2000, 2003 Free Software Foundation, Inc.

This file is part of GNU Classpath.

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it under the terms of the GNU General Public License as published by
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GNU Classpath is distributed in the hope that it will be useful, but
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02111-1307 USA.

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As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
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package java.sql;

import java.text.SimpleDateFormat;

/**
 * This class is a wrapper around java.util.Date to allow the JDBC
 * driver to identify the value as a SQL Timestamp.  Note that this
 * class also adds an additional field for nano-seconds, and so 
 * is not completely identical to <code>java.util.Date</code> as
 * the <code>java.sql.Date</code> and <code>java.sql.Time</code>
 * classes are.
 *
 * @author Aaron M. Renn ([email protected])
 */
public class Timestamp extends java.util.Date
{
  static final long serialVersionUID = 2745179027874758501L;

  /**
   * Used for parsing and formatting this date.
   */
  // Millisecond will have to be close enough for now.
  private static SimpleDateFormat parse_sdf = 
    new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSSS");

  private static SimpleDateFormat format_sdf =
    new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

  /**
    * The nanosecond value for this object
    */
  private int nanos;

  /**
   * This method returns a new instance of this class by parsing a
   * date in JDBC format into a Java date.
   *
   * @param str The string to parse.
   * @return The resulting <code>java.sql.Timestamp</code> value. 
   */
  public static Timestamp valueOf(String str)
  {
    try
      {
        Date d = (Date) parse_sdf.parseObject(str);
        return new Timestamp(d.getTime());
      }
    catch (Exception e)
      {
        return null;
      }
  }

  /**
   * This method initializes a new instance of this class with the
   * specified year, month, and day.
   *
   * @param year The year for this Timestamp (year - 1900)
   * @param month The month for this Timestamp (0-11)
   * @param day The day for this Timestamp (1-31)
   * @param hour The hour for this Timestamp (0-23)
   * @param minute The minute for this Timestamp (0-59)
   * @param second The second for this Timestamp (0-59)
   * @param nanos The nanosecond value for this Timestamp (0 to 999,999,9999)
   * @deprecated
   */
  public Timestamp(int year, int month, int day, int hour, int minute, 
    int second, int nanos)
  {
    super(year, month, day, hour, minute, second);
    this.nanos = nanos;
  }

  /**
   * This method initializes a new instance of this class with the
   * specified time value representing the number of seconds since 
   * Jan 1, 1970 at 12:00 midnight GMT.
   *
   * @param time The time value to intialize this <code>Time</code> to.
   */
  public Timestamp(long date)
  {
    super(date);
  }

  /**
   * This method returns this date in JDBC format.
   *
   * @return This date as a string.
   */
  public String toString()
  {
    return format_sdf.format(this) + "." + getNanos();
  }

  /**
    * This method returns the nanosecond value for this object.
    * @return The nanosecond value for this object.
    */