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#if MYSQL_6_9
// Copyright 2004, 2013, Oracle and/or its affiliates. All rights reserved.
//
// 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 Externals.MySql.Data.Types;
using System.ComponentModel;
using System.Globalization;
using System.Reflection;
using System.Text;
using System.Collections;
using System.Data;
using System.Data.Common;
namespace Externals.MySql.Data.MySqlClient
{
/// <summary>
/// Represents a parameter to a <see cref="MySqlCommand"/>, and optionally, its mapping to <see cref="DataSet"/> columns. This class cannot be inherited.
/// </summary>
internal sealed partial class MySqlParameter : ICloneable
{
private const int UNSIGNED_MASK = 0x8000;
private object paramValue;
private string paramName;
private MySqlDbType mySqlDbType;
private bool inferType = true;
private const int GEOMETRY_LENGTH = 25;
#region Constructors
public MySqlParameter()
{
Init();
}
/// <summary>
/// Initializes a new instance of the <see cref="MySqlParameter"/> class with the parameter name and a value of the new MySqlParameter.
/// </summary>
/// <param name="parameterName">The name of the parameter to map. </param>
/// <param name="value">An <see cref="Object"/> that is the value of the <see cref="MySqlParameter"/>. </param>
public MySqlParameter(string parameterName, object value) : this()
{
ParameterName = parameterName;
Value = value;
}
/// <summary>
/// Initializes a new instance of the <see cref="MySqlParameter"/> class with the parameter name and the data type.
/// </summary>
/// <param name="parameterName">The name of the parameter to map. </param>
/// <param name="dbType">One of the <see cref="MySqlDbType"/> values. </param>
public MySqlParameter(string parameterName, MySqlDbType dbType) : this(parameterName, null)
{
MySqlDbType = dbType;
}
/// <summary>
/// Initializes a new instance of the <see cref="MySqlParameter"/> class with the parameter name, the <see cref="MySqlDbType"/>, and the size.
/// </summary>
/// <param name="parameterName">The name of the parameter to map. </param>
/// <param name="dbType">One of the <see cref="MySqlDbType"/> values. </param>
/// <param name="size">The length of the parameter. </param>
public MySqlParameter(string parameterName, MySqlDbType dbType, int size) : this(parameterName, dbType)
{
Size = size;
}
partial void Init();
#endregion
#region Properties
[Category("Misc")]
public override String ParameterName
{
get { return paramName; }
set { SetParameterName(value); }
}
internal MySqlParameterCollection Collection { get; set; }
internal Encoding Encoding { get; set; }
internal bool TypeHasBeenSet
{
get { return inferType == false; }
}
internal string BaseName
{
get
{
if (ParameterName.StartsWith("@", StringComparison.Ordinal) || ParameterName.StartsWith("?", StringComparison.Ordinal))
return ParameterName.Substring(1);
return ParameterName;
}
}
/// <summary>
/// Gets or sets a value indicating whether the parameter is input-only, output-only, bidirectional, or a stored procedure return value parameter.
/// As of MySql version 4.1 and earlier, input-only is the only valid choice.
/// </summary>
[Category("Data")]
public override ParameterDirection Direction { get; set; }
/// <summary>
/// Gets or sets a value indicating whether the parameter accepts null values.
/// </summary>
[Browsable(false)]
public override Boolean IsNullable { get; set; }
/// <summary>
/// Gets or sets the MySqlDbType of the parameter.
/// </summary>
[Category("Data")]
[DbProviderSpecificTypeProperty(true)]
public MySqlDbType MySqlDbType
{
get { return mySqlDbType; }
set
{
SetMySqlDbType(value);
inferType = false;
}
}
/// <summary>
/// Gets or sets the maximum number of digits used to represent the <see cref="Value"/> property.
/// </summary>
[Category("Data")]
#if NET40
public byte Precision { get; set; }
#else
public override byte Precision { get; set; }
#endif
/// <summary>
/// Gets or sets the number of decimal places to which <see cref="Value"/> is resolved.
/// </summary>
[Category("Data")]
#if NET40
public byte Scale { get; set; }
#else
public override byte Scale { get; set; }
#endif
/// <summary>
/// Gets or sets the maximum size, in bytes, of the data within the column.
/// </summary>
[Category("Data")]
public override int Size { get; set; }
/// <summary>
/// Gets or sets the value of the parameter.
/// </summary>
[TypeConverter(typeof(StringConverter))]
[Category("Data")]
public override object Value
{
get { return paramValue; }
set
{
paramValue = value;
byte[] valueAsByte = value as byte[];
string valueAsString = value as string;
if (valueAsByte != null)
Size = valueAsByte.Length;
else if (valueAsString != null)
Size = valueAsString.Length;
if (inferType)
SetTypeFromValue();
}
}
private IMySqlValue _valueObject;
internal IMySqlValue ValueObject
{
get { return _valueObject; }
private set
{
_valueObject = value;
}
}
/// <summary>
/// Returns the possible values for this parameter if this parameter is of type
/// SET or ENUM. Returns null otherwise.
/// </summary>
public IList PossibleValues { get; internal set; }
#endregion
private void SetParameterName(string name)
{
if (Collection != null)
Collection.ParameterNameChanged(this, paramName, name);
paramName = name;
}
/// <summary>
/// Overridden. Gets a string containing the <see cref="ParameterName"/>.
/// </summary>
/// <returns></returns>
public override string ToString()
{
return paramName;
}
internal int GetPSType()
{
switch (mySqlDbType)
{
case MySqlDbType.Bit:
return (int)MySqlDbType.Int64 | UNSIGNED_MASK;
case MySqlDbType.UByte:
return (int)MySqlDbType.Byte | UNSIGNED_MASK;
case MySqlDbType.UInt64:
return (int)MySqlDbType.Int64 | UNSIGNED_MASK;
case MySqlDbType.UInt32:
return (int)MySqlDbType.Int32 | UNSIGNED_MASK;
case MySqlDbType.UInt24:
return (int)MySqlDbType.Int32 | UNSIGNED_MASK;
case MySqlDbType.UInt16:
return (int)MySqlDbType.Int16 | UNSIGNED_MASK;
default:
return (int)mySqlDbType;
}
}
internal void Serialize(MySqlPacket packet, bool binary, MySqlConnectionStringBuilder settings)
{
if (!binary && (paramValue == null || paramValue == DBNull.Value))
packet.WriteStringNoNull("NULL");
else
{
if (ValueObject.MySqlDbType == MySqlDbType.Guid)
{
MySqlGuid g = (MySqlGuid)ValueObject;
g.OldGuids = settings.OldGuids;
ValueObject = g;
}
if (ValueObject.MySqlDbType == MySqlDbType.Geometry)
{
MySqlGeometry v = (MySqlGeometry)ValueObject;
if (v.IsNull && Value != null)
{
MySqlGeometry.TryParse(Value.ToString(), out v);
}
ValueObject = v;
}
ValueObject.WriteValue(packet, binary, paramValue, Size);
}
}
partial void SetDbTypeFromMySqlDbType();
private void SetMySqlDbType(MySqlDbType mysql_dbtype)
{
mySqlDbType = mysql_dbtype;
ValueObject = MySqlField.GetIMySqlValue(mySqlDbType);
SetDbTypeFromMySqlDbType();
}
private void SetTypeFromValue()
{
if (paramValue == null || paramValue == DBNull.Value) return;
if (paramValue is Guid)
MySqlDbType = MySqlDbType.Guid;
else if (paramValue is TimeSpan)
MySqlDbType = MySqlDbType.Time;
else if (paramValue is bool)
MySqlDbType = MySqlDbType.Byte;
else
{
Type t = paramValue.GetType();
switch (t.Name)
{
case "SByte": MySqlDbType = MySqlDbType.Byte; break;
case "Byte": MySqlDbType = MySqlDbType.UByte; break;
case "Int16": MySqlDbType = MySqlDbType.Int16; break;
case "UInt16": MySqlDbType = MySqlDbType.UInt16; break;
case "Int32": MySqlDbType = MySqlDbType.Int32; break;
case "UInt32": MySqlDbType = MySqlDbType.UInt32; break;
case "Int64": MySqlDbType = MySqlDbType.Int64; break;
case "UInt64": MySqlDbType = MySqlDbType.UInt64; break;
case "DateTime": MySqlDbType = MySqlDbType.DateTime; break;
case "String": MySqlDbType = MySqlDbType.VarChar; break;
case "Single": MySqlDbType = MySqlDbType.Float; break;
case "Double": MySqlDbType = MySqlDbType.Double; break;
case "Decimal": MySqlDbType = MySqlDbType.Decimal; break;
case "Object":
default:
if (t.BaseType == typeof(Enum))
MySqlDbType = MySqlDbType.Int32;
else
MySqlDbType = MySqlDbType.Blob;
break;
}
}
}
#region ICloneable
public MySqlParameter Clone()
{
MySqlParameter clone = new MySqlParameter(paramName, mySqlDbType, Direction, SourceColumn, SourceVersion, paramValue);
// if we have not had our type set yet then our clone should not either
clone.inferType = inferType;
return clone;
}
object ICloneable.Clone()
{
return this.Clone();
}
#endregion
// this method is pretty dumb but we want it to be fast. it doesn't return size based
// on value and type but just on the value.
internal long EstimatedSize()
{
if (Value == null || Value == DBNull.Value)
return 4; // size of NULL
if (Value is byte[])
return (Value as byte[]).Length;
if (Value is string)
return (Value as string).Length * 4; // account for UTF-8 (yeah I know)
if (Value is decimal || Value is float)
return 64;
return 32;
}
}
}
#endif