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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 MySql.Data.MySqlClient;
namespace MySql.Data.Types
{
internal struct MySqlTimeSpan : IMySqlValue
{
private TimeSpan mValue;
private bool isNull;
public MySqlTimeSpan(bool isNull)
{
this.isNull = isNull;
mValue = TimeSpan.MinValue;
}
public MySqlTimeSpan(TimeSpan val)
{
this.isNull = false;
mValue = val;
}
#region IMySqlValue Members
public bool IsNull
{
get { return isNull; }
}
MySqlDbType IMySqlValue.MySqlDbType
{
get { return MySqlDbType.Time; }
}
DbType IMySqlValue.DbType
{
get { return DbType.Time; }
}
object IMySqlValue.Value
{
get { return mValue; }
}
public TimeSpan Value
{
get { return mValue; }
}
Type IMySqlValue.SystemType
{
get { return typeof(TimeSpan); }
}
string IMySqlValue.MySqlTypeName
{
get { return "TIME"; }
}
void IMySqlValue.WriteValue(MySqlPacket packet, bool binary, object val, int length)
{
if (!(val is TimeSpan))
throw new MySqlException("Only TimeSpan objects can be serialized by MySqlTimeSpan");
TimeSpan ts = (TimeSpan)val;
bool negative = ts.TotalMilliseconds < 0;
ts = ts.Duration();
if (binary)
{
packet.WriteByte(8);
packet.WriteByte((byte)(negative ? 1 : 0));
packet.WriteInteger(ts.Days, 4);
packet.WriteByte((byte)ts.Hours);
packet.WriteByte((byte)ts.Minutes);
packet.WriteByte((byte)ts.Seconds);
}
else
{
String s = String.Format("'{0}{1} {2:00}:{3:00}:{4:00}.{5}'",
negative ? "-" : "", ts.Days, ts.Hours, ts.Minutes, ts.Seconds, ts.Milliseconds);
packet.WriteStringNoNull(s);
}
}
IMySqlValue IMySqlValue.ReadValue(MySqlPacket packet, long length, bool nullVal)
{
if (nullVal) return new MySqlTimeSpan(true);
if (length >= 0)
{
string value = packet.ReadString(length);
ParseMySql(value);
return this;
}
long bufLength = packet.ReadByte();
int negate = 0;
if (bufLength > 0)
negate = packet.ReadByte();
isNull = false;
if (bufLength == 0)
isNull = true;
else if (bufLength == 5)
mValue = new TimeSpan(packet.ReadInteger(4), 0, 0, 0);
else if (bufLength == 8)
mValue = new TimeSpan(packet.ReadInteger(4),
packet.ReadByte(), packet.ReadByte(), packet.ReadByte());
else
mValue = new TimeSpan(packet.ReadInteger(4),
packet.ReadByte(), packet.ReadByte(), packet.ReadByte(),
packet.ReadInteger(4) / 1000000);
if (negate == 1)
mValue = mValue.Negate();
return this;
}
void IMySqlValue.SkipValue(MySqlPacket packet)
{
int len = packet.ReadByte();
packet.Position += len;
}
#endregion
internal static void SetDSInfo(DataTable dsTable)
{
// 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.
DataRow row = dsTable.NewRow();
row["TypeName"] = "TIME";
row["ProviderDbType"] = MySqlDbType.Time;
row["ColumnSize"] = 0;
row["CreateFormat"] = "TIME";
row["CreateParameters"] = null;
row["DataType"] = "System.TimeSpan";
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);
}
public override string ToString()
{
return String.Format("{0} {1:00}:{2:00}:{3:00}.{4}",
mValue.Days, mValue.Hours, mValue.Minutes, mValue.Seconds, mValue.Milliseconds);
}
private void ParseMySql(string s)
{
string[] parts = s.Split(':');
int hours = Int32.Parse(parts[0]);
int mins = Int32.Parse(parts[1]);
int secs = Int32.Parse(parts[2]);
if (hours < 0 || parts[0].StartsWith("-"))
{
mins *= -1;
secs *= -1;
}
int days = hours / 24;
hours = hours - (days * 24);
mValue = new TimeSpan(days, hours, mins, secs, 0);
isNull = false;
}
}
}
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