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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 MySql.Data.MySqlClient;
using System.Globalization;
namespace MySql.Data.Types
{
internal class MetaData
{
public static bool IsNumericType(string typename)
{
string lowerType = typename.ToLower(CultureInfo.InvariantCulture);
switch (lowerType)
{
case "int":
case "integer":
case "numeric":
case "decimal":
case "dec":
case "fixed":
case "tinyint":
case "mediumint":
case "bigint":
case "real":
case "double":
case "float":
case "serial":
case "smallint": return true;
}
return false;
}
public static bool IsTextType(string typename)
{
string lowerType = typename.ToLower(CultureInfo.InvariantCulture);
switch (lowerType)
{
case "varchar":
case "char":
case "text":
case "longtext":
case "tinytext":
case "mediumtext":
case "nchar":
case "nvarchar":
case "enum":
case "set":
return true;
}
return false;
}
public static bool SupportScale(string typename)
{
string lowerType = typename.ToLower(CultureInfo.InvariantCulture);
switch (lowerType)
{
case "numeric":
case "decimal":
case "dec":
case "real": return true;
}
return false;
}
public static MySqlDbType NameToType(string typeName, bool unsigned,
bool realAsFloat, MySqlConnection connection)
{
switch (typeName.ToUpper(CultureInfo.InvariantCulture))
{
case "CHAR": return MySqlDbType.String;
case "VARCHAR": return MySqlDbType.VarChar;
case "DATE": return MySqlDbType.Date;
case "DATETIME": return MySqlDbType.DateTime;
case "NUMERIC":
case "DECIMAL":
case "DEC":
case "FIXED":
if (connection.driver.Version.isAtLeast(5, 0, 3))
return MySqlDbType.NewDecimal;
else
return MySqlDbType.Decimal;
case "YEAR":
return MySqlDbType.Year;
case "TIME":
return MySqlDbType.Time;
case "TIMESTAMP":
return MySqlDbType.Timestamp;
case "SET": return MySqlDbType.Set;
case "ENUM": return MySqlDbType.Enum;
case "BIT": return MySqlDbType.Bit;
case "TINYINT":
return unsigned ? MySqlDbType.UByte : MySqlDbType.Byte;
case "BOOL":
case "BOOLEAN":
return MySqlDbType.Byte;
case "SMALLINT":
return unsigned ? MySqlDbType.UInt16 : MySqlDbType.Int16;
case "MEDIUMINT":
return unsigned ? MySqlDbType.UInt24 : MySqlDbType.Int24;
case "INT":
case "INTEGER":
return unsigned ? MySqlDbType.UInt32 : MySqlDbType.Int32;
case "SERIAL":
return MySqlDbType.UInt64;
case "BIGINT":
return unsigned ? MySqlDbType.UInt64 : MySqlDbType.Int64;
case "FLOAT": return MySqlDbType.Float;
case "DOUBLE": return MySqlDbType.Double;
case "REAL": return
realAsFloat ? MySqlDbType.Float : MySqlDbType.Double;
case "TEXT":
return MySqlDbType.Text;
case "BLOB":
return MySqlDbType.Blob;
case "LONGBLOB":
return MySqlDbType.LongBlob;
case "LONGTEXT":
return MySqlDbType.LongText;
case "MEDIUMBLOB":
return MySqlDbType.MediumBlob;
case "MEDIUMTEXT":
return MySqlDbType.MediumText;
case "TINYBLOB":
return MySqlDbType.TinyBlob;
case "TINYTEXT":
return MySqlDbType.TinyText;
case "BINARY":
return MySqlDbType.Binary;
case "VARBINARY":
return MySqlDbType.VarBinary;
}
throw new MySqlException("Unhandled type encountered");
}
}
}
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