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347 lines
12 KiB
347 lines
12 KiB
#if MYSQL_6_9
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// Copyright © 2004, 2013, Oracle and/or its affiliates. All rights reserved.
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//
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// MySQL Connector/NET is licensed under the terms of the GPLv2
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// <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most
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// MySQL Connectors. There are special exceptions to the terms and
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// conditions of the GPLv2 as it is applied to this software, see the
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// FLOSS License Exception
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// <http://www.mysql.com/about/legal/licensing/foss-exception.html>.
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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 as published
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// by the Free Software Foundation; version 2 of the License.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with this program; if not, write to the Free Software Foundation, Inc.,
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// 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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using System;
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using System.ComponentModel;
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using System.ComponentModel.Design.Serialization;
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using System.Data;
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using System.Data.Common;
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using System.Globalization;
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using System.Reflection;
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using ParameterDirection = System.Data.ParameterDirection;
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namespace Externals.MySql.Data.MySqlClient
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{
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[TypeConverter(typeof(MySqlParameterConverter))]
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internal sealed partial class MySqlParameter : DbParameter, IDataParameter, IDbDataParameter
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{
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private DbType dbType;
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/// <summary>
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/// Initializes a new instance of the <see cref="MySqlParameter"/> class with the parameter name, the <see cref="MySqlDbType"/>, the size, and the source column name.
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/// </summary>
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/// <param name="parameterName">The name of the parameter to map. </param>
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/// <param name="dbType">One of the <see cref="MySqlDbType"/> values. </param>
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/// <param name="size">The length of the parameter. </param>
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/// <param name="sourceColumn">The name of the source column. </param>
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public MySqlParameter(string parameterName, MySqlDbType dbType, int size, string sourceColumn) : this(parameterName, dbType)
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{
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Size = size;
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Direction = ParameterDirection.Input;
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SourceColumn = sourceColumn;
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SourceVersion = DataRowVersion.Current;
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="MySqlParameter"/> class with the parameter name, the type of the parameter, the size of the parameter, a <see cref="ParameterDirection"/>, the precision of the parameter, the scale of the parameter, the source column, a <see cref="DataRowVersion"/> to use, and the value of the parameter.
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/// </summary>
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/// <param name="parameterName">The name of the parameter to map. </param>
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/// <param name="dbType">One of the <see cref="MySqlDbType"/> values. </param>
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/// <param name="size">The length of the parameter. </param>
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/// <param name="direction">One of the <see cref="ParameterDirection"/> values. </param>
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/// <param name="isNullable">true if the value of the field can be null, otherwise false. </param>
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/// <param name="precision">The total number of digits to the left and right of the decimal point to which <see cref="MySqlParameter.Value"/> is resolved.</param>
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/// <param name="scale">The total number of decimal places to which <see cref="MySqlParameter.Value"/> is resolved. </param>
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/// <param name="sourceColumn">The name of the source column. </param>
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/// <param name="sourceVersion">One of the <see cref="DataRowVersion"/> values. </param>
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/// <param name="value">An <see cref="Object"/> that is the value of the <see cref="MySqlParameter"/>. </param>
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/// <exception cref="ArgumentException"/>
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public MySqlParameter(string parameterName, MySqlDbType dbType, int size, ParameterDirection direction,
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bool isNullable, byte precision, byte scale, string sourceColumn,
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DataRowVersion sourceVersion,
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object value)
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: this(parameterName, dbType, size, sourceColumn)
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{
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Direction = direction;
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SourceVersion = sourceVersion;
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IsNullable = isNullable;
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Precision = precision;
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Scale = scale;
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Value = value;
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}
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internal MySqlParameter(string name, MySqlDbType type, ParameterDirection dir, string col, DataRowVersion ver, object val)
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: this(name, type)
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{
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Direction = dir;
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SourceColumn = col;
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SourceVersion = ver;
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Value = val;
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}
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partial void Init()
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{
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SourceVersion = DataRowVersion.Current;
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Direction = ParameterDirection.Input;
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}
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/// <summary>
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/// Gets or sets the <see cref="DataRowVersion"/> to use when loading <see cref="Value"/>.
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/// </summary>
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[Category("Data")]
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public override DataRowVersion SourceVersion { get; set; }
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/// <summary>
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/// Gets or sets the name of the source column that is mapped to the <see cref="DataSet"/> and used for loading or returning the <see cref="Value"/>.
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/// </summary>
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[Category("Data")]
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public override String SourceColumn { get; set; }
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/// <summary>
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/// Resets the <b>DbType</b> property to its original settings.
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/// </summary>
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public override void ResetDbType()
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{
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inferType = true;
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}
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/// <summary>
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/// Sets or gets a value which indicates whether the source column is nullable.
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/// This allows <see cref="DbCommandBuilder"/> to correctly generate Update statements
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/// for nullable columns.
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/// </summary>
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public override bool SourceColumnNullMapping { get; set; }
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/// <summary>
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/// Gets or sets the <see cref="DbType"/> of the parameter.
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/// </summary>
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public override DbType DbType
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{
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get { return dbType; }
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set
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{
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SetDbType(value);
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inferType = false;
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}
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}
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partial void SetDbTypeFromMySqlDbType()
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{
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switch (mySqlDbType)
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{
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case MySqlDbType.NewDecimal:
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case MySqlDbType.Decimal:
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dbType = DbType.Decimal;
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break;
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case MySqlDbType.Byte:
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dbType = DbType.SByte;
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break;
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case MySqlDbType.UByte:
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dbType = DbType.Byte;
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break;
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case MySqlDbType.Int16:
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dbType = DbType.Int16;
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break;
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case MySqlDbType.UInt16:
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dbType = DbType.UInt16;
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break;
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case MySqlDbType.Int24:
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case MySqlDbType.Int32:
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dbType = DbType.Int32;
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break;
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case MySqlDbType.UInt24:
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case MySqlDbType.UInt32:
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dbType = DbType.UInt32;
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break;
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case MySqlDbType.Int64:
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dbType = DbType.Int64;
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break;
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case MySqlDbType.UInt64:
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dbType = DbType.UInt64;
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break;
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case MySqlDbType.Bit:
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dbType = DbType.UInt64;
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break;
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case MySqlDbType.Float:
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dbType = DbType.Single;
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break;
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case MySqlDbType.Double:
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dbType = DbType.Double;
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break;
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case MySqlDbType.Timestamp:
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case MySqlDbType.DateTime:
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dbType = DbType.DateTime;
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break;
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case MySqlDbType.Date:
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case MySqlDbType.Newdate:
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case MySqlDbType.Year:
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dbType = DbType.Date;
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break;
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case MySqlDbType.Time:
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dbType = DbType.Time;
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break;
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case MySqlDbType.Enum:
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case MySqlDbType.Set:
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case MySqlDbType.VarChar:
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dbType = DbType.String;
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break;
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case MySqlDbType.TinyBlob:
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case MySqlDbType.MediumBlob:
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case MySqlDbType.LongBlob:
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case MySqlDbType.Blob:
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dbType = DbType.Object;
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break;
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case MySqlDbType.String:
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dbType = DbType.StringFixedLength;
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break;
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case MySqlDbType.Guid:
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dbType = DbType.Guid;
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break;
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}
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}
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private void SetDbType(DbType db_type)
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{
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dbType = db_type;
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switch (dbType)
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{
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case DbType.Guid:
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mySqlDbType = MySqlDbType.Guid;
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break;
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case DbType.AnsiString:
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case DbType.String:
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mySqlDbType = MySqlDbType.VarChar;
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break;
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case DbType.AnsiStringFixedLength:
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case DbType.StringFixedLength:
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mySqlDbType = MySqlDbType.String;
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break;
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case DbType.Boolean:
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case DbType.Byte:
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mySqlDbType = MySqlDbType.UByte;
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break;
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case DbType.SByte:
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mySqlDbType = MySqlDbType.Byte;
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break;
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case DbType.Date:
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mySqlDbType = MySqlDbType.Date;
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break;
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case DbType.DateTime:
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mySqlDbType = MySqlDbType.DateTime;
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break;
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case DbType.Time:
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mySqlDbType = MySqlDbType.Time;
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break;
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case DbType.Single:
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mySqlDbType = MySqlDbType.Float;
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break;
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case DbType.Double:
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mySqlDbType = MySqlDbType.Double;
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break;
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case DbType.Int16:
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mySqlDbType = MySqlDbType.Int16;
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break;
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case DbType.UInt16:
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mySqlDbType = MySqlDbType.UInt16;
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break;
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case DbType.Int32:
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mySqlDbType = MySqlDbType.Int32;
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break;
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case DbType.UInt32:
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mySqlDbType = MySqlDbType.UInt32;
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break;
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case DbType.Int64:
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mySqlDbType = MySqlDbType.Int64;
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break;
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case DbType.UInt64:
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mySqlDbType = MySqlDbType.UInt64;
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break;
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case DbType.Decimal:
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case DbType.Currency:
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mySqlDbType = MySqlDbType.Decimal;
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break;
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case DbType.Object:
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case DbType.VarNumeric:
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case DbType.Binary:
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default:
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mySqlDbType = MySqlDbType.Blob;
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break;
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}
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if (dbType == DbType.Object)
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{
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var value = this.paramValue as byte[];
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if (value != null && value.Length == GEOMETRY_LENGTH)
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mySqlDbType = MySqlDbType.Geometry;
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}
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ValueObject = MySqlField.GetIMySqlValue(mySqlDbType);
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}
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}
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internal class MySqlParameterConverter : TypeConverter
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{
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public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType)
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{
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if (destinationType == typeof(InstanceDescriptor))
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{
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return true;
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}
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// Always call the base to see if it can perform the conversion.
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return base.CanConvertTo(context, destinationType);
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}
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public override object ConvertTo(ITypeDescriptorContext context,
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CultureInfo culture, object value, Type destinationType)
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{
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if (destinationType == typeof(InstanceDescriptor))
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{
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ConstructorInfo ci = typeof(MySqlParameter).GetConstructor(
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new Type[]
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{
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typeof (string), typeof (MySqlDbType), typeof (int), typeof (ParameterDirection),
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typeof (bool), typeof (byte), typeof (byte), typeof (string), typeof (DataRowVersion),
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typeof (object)
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});
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MySqlParameter p = (MySqlParameter)value;
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return new InstanceDescriptor(ci, new object[]
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{
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p.ParameterName, p.DbType, p.Size, p.Direction,
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p.IsNullable, p.Precision,
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p.Scale, p.SourceColumn, p.SourceVersion, p.Value
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});
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}
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// Always call base, even if you can't convert.
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return base.ConvertTo(context, culture, value, destinationType);
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}
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}
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}
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#endif
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