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// Copyright (c) 2004-2008 MySQL AB, 2008-2009 Sun Microsystems, Inc.
//
// MySQL Connector/NET is licensed under the terms of the GPLv2
// <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most
// MySQL Connectors. There are special exceptions to the terms and
// conditions of the GPLv2 as it is applied to this software, see the
// FLOSS License Exception
// <http://www.mysql.com/about/legal/licensing/foss-exception.html>.
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published
// by the Free Software Foundation; version 2 of the License.
//
// This program 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
// for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
using System;
using System.Data;
using System.IO;
using MySql.Data.MySqlClient;
using System.Globalization;
namespace MySql.Data.Types
{
/// <summary>
///
/// </summary>
public struct MySqlDateTime : IMySqlValue, IConvertible, IComparable
{
private bool isNull;
private MySqlDbType type;
private int year, month, day, hour, minute, second;
private int millisecond;
/// <summary>
/// Constructs a new <b>MySqlDateTime</b> object by setting the individual time properties to
/// the given values.
/// </summary>
/// <param name="year">The year to use.</param>
/// <param name="month">The month to use.</param>
/// <param name="day">The day to use.</param>
/// <param name="hour">The hour to use.</param>
/// <param name="minute">The minute to use.</param>
/// <param name="second">The second to use.</param>
public MySqlDateTime(int year, int month, int day, int hour, int minute, int second)
: this(MySqlDbType.DateTime, year, month, day, hour, minute, second)
{
}
/// <summary>
/// Constructs a new <b>MySqlDateTime</b> object by using values from the given <see cref="DateTime"/> object.
/// </summary>
/// <param name="dt">The <see cref="DateTime"/> object to copy.</param>
public MySqlDateTime(DateTime dt)
: this(MySqlDbType.DateTime, dt)
{
}
/// <summary>
/// Constructs a new <b>MySqlDateTime</b> object by copying the current value of the given object.
/// </summary>
/// <param name="mdt">The <b>MySqlDateTime</b> object to copy.</param>
public MySqlDateTime(MySqlDateTime mdt)
{
year = mdt.Year;
month = mdt.Month;
day = mdt.Day;
hour = mdt.Hour;
minute = mdt.Minute;
second = mdt.Second;
millisecond = 0;
type = MySqlDbType.DateTime;
isNull = false;
}
/// <summary>
/// Enables the contruction of a <b>MySqlDateTime</b> object by parsing a string.
/// </summary>
public MySqlDateTime(string dateTime)
: this(MySqlDateTime.Parse(dateTime))
{
}
internal MySqlDateTime(MySqlDbType type, int year, int month, int day, int hour, int minute,
int second)
{
this.isNull = false;
this.type = type;
this.year = year;
this.month = month;
this.day = day;
this.hour = hour;
this.minute = minute;
this.second = second;
this.millisecond = 0;
}
internal MySqlDateTime(MySqlDbType type, bool isNull)
: this(type, 0, 0, 0, 0, 0, 0)
{
this.isNull = isNull;
}
internal MySqlDateTime(MySqlDbType type, DateTime val)
: this(type, 0, 0, 0, 0, 0, 0)
{
this.isNull = false;
year = val.Year;
month = val.Month;
day = val.Day;
hour = val.Hour;
minute = val.Minute;
second = val.Second;
millisecond = val.Millisecond;
}
#region Properties
/// <summary>
/// Indicates if this object contains a value that can be represented as a DateTime
/// </summary>
public bool IsValidDateTime
{
get
{
return year != 0 && month != 0 && day != 0;
}
}
/// <summary>Returns the year portion of this datetime</summary>
public int Year
{
get { return year; }
set { year = value; }
}
/// <summary>Returns the month portion of this datetime</summary>
public int Month
{
get { return month; }
set { month = value; }
}
/// <summary>Returns the day portion of this datetime</summary>
public int Day
{
get { return day; }
set { day = value; }
}
/// <summary>Returns the hour portion of this datetime</summary>
public int Hour
{
get { return hour; }
set { hour = value; }
}
/// <summary>Returns the minute portion of this datetime</summary>
public int Minute
{
get { return minute; }
set { minute = value; }
}
/// <summary>Returns the second portion of this datetime</summary>
public int Second
{
get { return second; }
set { second = value; }
}
/// <summary>
/// Retrieves the millisecond value of this object.
/// </summary>
public int Millisecond
{
get { return millisecond; }
set { millisecond = value; }
}
#endregion
#region IMySqlValue Members
/// <summary>
/// Returns true if this datetime object has a null value
/// </summary>
public bool IsNull
{
get { return isNull; }
}
MySqlDbType IMySqlValue.MySqlDbType
{
get { return type; }
}
DbType IMySqlValue.DbType
{
get
{
if (type == MySqlDbType.Date || type == MySqlDbType.Newdate)
return DbType.Date;
return DbType.DateTime;
}
}
object IMySqlValue.Value
{
get { return GetDateTime(); }
}
/// <summary>
/// Retrieves the value of this <see cref="MySqlDateTime"/> as a DateTime object.
/// </summary>
public DateTime Value
{
get { return GetDateTime(); }
}
Type IMySqlValue.SystemType
{
get { return typeof(DateTime); }
}
string IMySqlValue.MySqlTypeName
{
get
{
switch (type)
{
case MySqlDbType.Date: return "DATE";
case MySqlDbType.Newdate: return "NEWDATE";
case MySqlDbType.Timestamp: return "TIMESTAMP";
}
return "DATETIME";
}
}
private void SerializeText(MySqlPacket packet, MySqlDateTime value)
{
string val = String.Empty;
val = String.Format("{0:0000}-{1:00}-{2:00}",
value.Year, value.Month, value.Day);
if (type != MySqlDbType.Date)
val = String.Format("{0} {1:00}:{2:00}:{3:00}", val,
value.Hour, value.Minute, value.Second);
packet.WriteStringNoNull("'" + val + "'");
}
void IMySqlValue.WriteValue(MySqlPacket packet, bool binary, object value, int length)
{
MySqlDateTime dtValue;
string valueAsString = value as string;
if (value is DateTime)
dtValue = new MySqlDateTime(type, (DateTime)value);
else if (valueAsString != null)
dtValue = new MySqlDateTime(type, DateTime.Parse(valueAsString, CultureInfo.CurrentCulture));
else if (value is MySqlDateTime)
dtValue = (MySqlDateTime)value;
else
throw new MySqlException("Unable to serialize date/time value.");
if (!binary)
{
SerializeText(packet, dtValue);
return;
}
if (type == MySqlDbType.Timestamp)
packet.WriteByte(11);
else
packet.WriteByte(7);
packet.WriteInteger(dtValue.Year, 2);
packet.WriteByte((byte)dtValue.Month);
packet.WriteByte((byte)dtValue.Day);
if (type == MySqlDbType.Date)
{
packet.WriteByte(0);
packet.WriteByte(0);
packet.WriteByte(0);
}
else
{
packet.WriteByte((byte)dtValue.Hour);
packet.WriteByte((byte)dtValue.Minute);
packet.WriteByte((byte)dtValue.Second);
}
if (type == MySqlDbType.Timestamp)
packet.WriteInteger(dtValue.Millisecond, 4);
}
static internal MySqlDateTime Parse(string s)
{
MySqlDateTime dt = new MySqlDateTime();
return dt.ParseMySql(s);
}
static internal MySqlDateTime Parse(string s, Common.DBVersion version)
{
MySqlDateTime dt = new MySqlDateTime();
return dt.ParseMySql(s);
}
private MySqlDateTime ParseMySql(string s)
{
string[] parts = s.Split('-', ' ', ':', '/');
int year = int.Parse(parts[0]);
int month = int.Parse(parts[1]);
int day = int.Parse(parts[2]);
int hour = 0, minute = 0, second = 0;
if (parts.Length > 3)
{
hour = int.Parse(parts[3]);
minute = int.Parse(parts[4]);
second = int.Parse(parts[5]);
}
return new MySqlDateTime(type, year, month, day, hour, minute, second);
}
IMySqlValue IMySqlValue.ReadValue(MySqlPacket packet, long length, bool nullVal)
{
if (nullVal) return new MySqlDateTime(type, true);
if (length >= 0)
{
string value = packet.ReadString(length);
return ParseMySql(value);
}
long bufLength = packet.ReadByte();
int year = 0, month = 0, day = 0;
int hour = 0, minute = 0, second = 0;
if (bufLength >= 4)
{
year = packet.ReadInteger(2);
month = packet.ReadByte();
day = packet.ReadByte();
}
if (bufLength > 4)
{
hour = packet.ReadByte();
minute = packet.ReadByte();
second = packet.ReadByte();
}
if (bufLength > 7)
packet.ReadInteger(4);
return new MySqlDateTime(type, year, month, day, hour, minute, second);
}
void IMySqlValue.SkipValue(MySqlPacket packet)
{
int len = packet.ReadByte();
packet.Position += len;
}
#endregion
/// <summary>Returns this value as a DateTime</summary>
public DateTime GetDateTime()
{
if (!IsValidDateTime)
throw new MySqlConversionException("Unable to convert MySQL date/time value to System.DateTime");
return new DateTime(year, month, day, hour, minute, second);
}
private static string FormatDateCustom(string format, int monthVal, int dayVal, int yearVal)
{
format = format.Replace("MM", "{0:00}");
format = format.Replace("M", "{0}");
format = format.Replace("dd", "{1:00}");
format = format.Replace("d", "{1}");
format = format.Replace("yyyy", "{2:0000}");
format = format.Replace("yy", "{3:00}");
format = format.Replace("y", "{4:0}");
int year2digit = yearVal - ((yearVal / 1000) * 1000);
year2digit -= ((year2digit / 100) * 100);
int year1digit = year2digit - ((year2digit / 10) * 10);
return String.Format(format, monthVal, dayVal, yearVal, year2digit, year1digit);
}
/// <summary>Returns a MySQL specific string representation of this value</summary>
public override string ToString()
{
if (this.IsValidDateTime)
{
DateTime d = new DateTime(year, month, day, hour, minute, second);
return (type == MySqlDbType.Date) ? d.ToString("d") : d.ToString();
}
string dateString = FormatDateCustom(
CultureInfo.CurrentUICulture.DateTimeFormat.ShortDatePattern, month, day, year);
if (type == MySqlDbType.Date)
return dateString;
DateTime dt = new DateTime(1, 2, 3, hour, minute, second);
dateString = String.Format("{0} {1}", dateString, dt.ToLongTimeString());
return dateString;
}
/// <summary></summary>
/// <param name="val"></param>
/// <returns></returns>
public static explicit operator DateTime(MySqlDateTime val)
{
if (!val.IsValidDateTime) return DateTime.MinValue;
return val.GetDateTime();
}
internal static void SetDSInfo(DataTable dsTable)
{
string[] types = new string[] { "DATE", "DATETIME", "TIMESTAMP" };
MySqlDbType[] dbtype = new MySqlDbType[] { MySqlDbType.Date,
MySqlDbType.DateTime, MySqlDbType.Timestamp };
// we use name indexing because this method will only be called
// when GetSchema is called for the DataSourceInformation
// collection and then it wil be cached.
for (int x = 0; x < types.Length; x++)
{
DataRow row = dsTable.NewRow();
row["TypeName"] = types[x];
row["ProviderDbType"] = dbtype[x];
row["ColumnSize"] = 0;
row["CreateFormat"] = types[x];
row["CreateParameters"] = null;
row["DataType"] = "System.DateTime";
row["IsAutoincrementable"] = false;
row["IsBestMatch"] = true;
row["IsCaseSensitive"] = false;
row["IsFixedLength"] = true;
row["IsFixedPrecisionScale"] = true;
row["IsLong"] = false;
row["IsNullable"] = true;
row["IsSearchable"] = true;
row["IsSearchableWithLike"] = false;
row["IsUnsigned"] = false;
row["MaximumScale"] = 0;
row["MinimumScale"] = 0;
row["IsConcurrencyType"] = DBNull.Value;
row["IsLiteralSupported"] = false;
row["LiteralPrefix"] = null;
row["LiteralSuffix"] = null;
row["NativeDataType"] = null;
dsTable.Rows.Add(row);
}
}
#region IConvertible Members
ulong IConvertible.ToUInt64(IFormatProvider provider)
{
return 0;
}
sbyte IConvertible.ToSByte(IFormatProvider provider)
{
// TODO: Add MySqlDateTime.ToSByte implementation
return 0;
}
double IConvertible.ToDouble(IFormatProvider provider)
{
return 0;
}
DateTime IConvertible.ToDateTime(IFormatProvider provider)
{
return this.GetDateTime();
}
float IConvertible.ToSingle(IFormatProvider provider)
{
return 0;
}
bool IConvertible.ToBoolean(IFormatProvider provider)
{
return false;
}
int IConvertible.ToInt32(IFormatProvider provider)
{
return 0;
}
ushort IConvertible.ToUInt16(IFormatProvider provider)
{
return 0;
}
short IConvertible.ToInt16(IFormatProvider provider)
{
return 0;
}
string System.IConvertible.ToString(IFormatProvider provider)
{
return null;
}
byte IConvertible.ToByte(IFormatProvider provider)
{
return 0;
}
char IConvertible.ToChar(IFormatProvider provider)
{
return '\0';
}
long IConvertible.ToInt64(IFormatProvider provider)
{
return 0;
}
System.TypeCode IConvertible.GetTypeCode()
{
return new System.TypeCode();
}
decimal IConvertible.ToDecimal(IFormatProvider provider)
{
return 0;
}
object IConvertible.ToType(Type conversionType, IFormatProvider provider)
{
return null;
}
uint IConvertible.ToUInt32(IFormatProvider provider)
{
return 0;
}
#endregion
#region IComparable Members
int IComparable.CompareTo(object obj)
{
MySqlDateTime otherDate = (MySqlDateTime)obj;
if (Year < otherDate.Year) return -1;
else if (Year > otherDate.Year) return 1;
if (Month < otherDate.Month) return -1;
else if (Month > otherDate.Month) return 1;
if (Day < otherDate.Day) return -1;
else if (Day > otherDate.Day) return 1;
if (Hour < otherDate.Hour) return -1;
else if (Hour > otherDate.Hour) return 1;
if (Minute < otherDate.Minute) return -1;
else if (Minute > otherDate.Minute) return 1;
if (Second < otherDate.Second) return -1;
else if (Second > otherDate.Second) return 1;
if (Millisecond < otherDate.Millisecond) return -1;
else if (Millisecond > otherDate.Millisecond) return 1;
return 0;
}
#endregion
}
}
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