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137 lines
3.7 KiB
137 lines
3.7 KiB
// Copyright (c) 2004-2008 MySQL AB, 2008-2009 Sun Microsystems, Inc.
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License version 2 as published by
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// the Free Software Foundation
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//
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// There are special exceptions to the terms and conditions of the GPL
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// as it is applied to this software. View the full text of the
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// exception in file EXCEPTIONS in the directory of this software
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// distribution.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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using System;
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using System.Data;
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using MySql.Data.MySqlClient;
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namespace MySql.Data.Types
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{
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/// <summary>
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/// Summary description for MySqlUInt64.
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/// </summary>
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internal struct MySqlBit : IMySqlValue
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{
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private ulong mValue;
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private bool isNull;
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public MySqlBit(bool isnull)
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{
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mValue = 0;
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isNull = isnull;
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}
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public bool IsNull
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{
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get { return isNull; }
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}
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MySqlDbType IMySqlValue.MySqlDbType
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{
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get { return MySqlDbType.Bit; }
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}
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DbType IMySqlValue.DbType
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{
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get { return DbType.UInt64; }
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}
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object IMySqlValue.Value
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{
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get
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{
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return mValue;
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}
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}
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Type IMySqlValue.SystemType
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{
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get
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{
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return typeof(UInt64);
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}
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}
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string IMySqlValue.MySqlTypeName
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{
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get { return "BIT"; }
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}
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public void WriteValue(MySqlPacket packet, bool binary, object value, int length)
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{
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ulong v = (value is UInt64) ? (UInt64)value : Convert.ToUInt64(value);
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if (binary)
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packet.WriteInteger((long)v, 8);
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else
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packet.WriteStringNoNull(v.ToString());
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}
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public IMySqlValue ReadValue(MySqlPacket packet, long length, bool isNull)
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{
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this.isNull = isNull;
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if (isNull)
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return this;
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if (length == -1)
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length = packet.ReadFieldLength();
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mValue = (UInt64)packet.ReadBitValue((int)length);
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return this;
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}
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public void SkipValue(MySqlPacket packet)
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{
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int len = packet.ReadFieldLength();
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packet.Position += len;
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}
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public static void SetDSInfo(DataTable dsTable)
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{
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// we use name indexing because this method will only be called
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// when GetSchema is called for the DataSourceInformation
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// collection and then it wil be cached.
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DataRow row = dsTable.NewRow();
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row["TypeName"] = "BIT";
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row["ProviderDbType"] = MySqlDbType.Bit;
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row["ColumnSize"] = 64;
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row["CreateFormat"] = "BIT";
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row["CreateParameters"] = DBNull.Value; ;
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row["DataType"] = typeof(UInt64).ToString();
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row["IsAutoincrementable"] = false;
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row["IsBestMatch"] = true;
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row["IsCaseSensitive"] = false;
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row["IsFixedLength"] = false;
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row["IsFixedPrecisionScale"] = true;
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row["IsLong"] = false;
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row["IsNullable"] = true;
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row["IsSearchable"] = true;
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row["IsSearchableWithLike"] = false;
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row["IsUnsigned"] = false;
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row["MaximumScale"] = 0;
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row["MinimumScale"] = 0;
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row["IsConcurrencyType"] = DBNull.Value;
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row["IsLiteralSupported"] = false;
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row["LiteralPrefix"] = DBNull.Value;
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row["LiteralSuffix"] = DBNull.Value;
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row["NativeDataType"] = DBNull.Value;
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dsTable.Rows.Add(row);
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}
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}
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}
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