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// created on 18/5/2002 at 01:25
// Npgsql.NpgsqlParameter.cs
//
// Author:
// Francisco Jr. (fxjrlists@yahoo.com.br)
//
// Copyright (C) 2002 The Npgsql Development Team
// npgsql-general@gborg.postgresql.org
// http://gborg.postgresql.org/project/npgsql/projdisplay.php
//
// Permission to use, copy, modify, and distribute this software and its
// documentation for any purpose, without fee, and without a written
// agreement is hereby granted, provided that the above copyright notice
// and this paragraph and the following two paragraphs appear in all copies.
//
// IN NO EVENT SHALL THE NPGSQL DEVELOPMENT TEAM BE LIABLE TO ANY PARTY
// FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
// INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS
// DOCUMENTATION, EVEN IF THE NPGSQL DEVELOPMENT TEAM HAS BEEN ADVISED OF
// THE POSSIBILITY OF SUCH DAMAGE.
//
// THE NPGSQL DEVELOPMENT TEAM SPECIFICALLY DISCLAIMS ANY WARRANTIES,
// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
// AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
// ON AN "AS IS" BASIS, AND THE NPGSQL DEVELOPMENT TEAM HAS NO OBLIGATIONS
// TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
using System;
using System.ComponentModel;
using System.Data;
using System.Data.Common;
using System.Reflection;
using System.Resources;
using NpgsqlTypes;
#if WITHDESIGN
using Npgsql.Design;
#endif
namespace Npgsql
{
///<summary>
/// This class represents a parameter to a command that will be sent to server
///</summary>
#if WITHDESIGN
[TypeConverter(typeof(NpgsqlParameterConverter))]
#endif
public sealed class NpgsqlParameter : DbParameter, ICloneable
{
// Logging related values
private static readonly String CLASSNAME = MethodBase.GetCurrentMethod().DeclaringType.Name;
// Fields to implement IDbDataParameter interface.
private byte precision = 0;
private byte scale = 0;
private Int32 size = 0;
// Fields to implement IDataParameter
//private NpgsqlDbType npgsqldb_type = NpgsqlDbType.Text;
//private DbType db_type = DbType.String;
private NpgsqlNativeTypeInfo type_info;
private NpgsqlBackendTypeInfo backendTypeInfo;
private ParameterDirection direction = ParameterDirection.Input;
private Boolean is_nullable = false;
private String m_Name = String.Empty;
private String source_column = String.Empty;
private DataRowVersion source_version = DataRowVersion.Current;
private Object value = null;
private Object npgsqlValue = null;
private Boolean sourceColumnNullMapping;
private NpgsqlParameterCollection collection = null;
private static readonly ResourceManager resman = new ResourceManager(MethodBase.GetCurrentMethod().DeclaringType);
private Boolean useCast = false;
private static readonly NpgsqlNativeTypeInfo defaultTypeInfo = NpgsqlTypesHelper.GetNativeTypeInfo(typeof(String));
private bool bound = false;
/// <summary>
/// Initializes a new instance of the <see cref="Npgsql.NpgsqlParameter">NpgsqlParameter</see> class.
/// </summary>
public NpgsqlParameter()
{
NpgsqlEventLog.LogMethodEnter(LogLevel.Debug, CLASSNAME, CLASSNAME);
//type_info = NpgsqlTypesHelper.GetNativeTypeInfo(typeof(String));
}
/// <summary>
/// Initializes a new instance of the <see cref="Npgsql.NpgsqlParameter">NpgsqlParameter</see>
/// class with the parameter m_Name and a value of the new <b>NpgsqlParameter</b>.
/// </summary>
/// <param m_Name="parameterName">The m_Name of the parameter to map.</param>
/// <param m_Name="value">An <see cref="System.Object">Object</see> that is the value of the <see cref="Npgsql.NpgsqlParameter">NpgsqlParameter</see>.</param>
/// <remarks>
/// <p>When you specify an <see cref="System.Object">Object</see>
/// in the value parameter, the <see cref="System.Data.DbType">DbType</see> is
/// inferred from the .NET Framework type of the <b>Object</b>.</p>
/// <p>When using this constructor, you must be aware of a possible misuse of the constructor which takes a DbType parameter.
/// This happens when calling this constructor passing an int 0 and the compiler thinks you are passing a value of DbType.
/// Use <code> Convert.ToInt32(value) </code> for example to have compiler calling the correct constructor.</p>
/// </remarks>
public NpgsqlParameter(String parameterName, object value)
{
NpgsqlEventLog.LogMethodEnter(LogLevel.Debug, CLASSNAME, CLASSNAME, parameterName, value);
this.ParameterName = parameterName;
this.Value = value;
/*if ((this.value == null) || (this.value == DBNull.Value))
{
// don't really know what to do - leave default and do further exploration
// Default type for null values is String.
this.value = DBNull.Value;
type_info = NpgsqlTypesHelper.GetNativeTypeInfo(typeof(String));
}
else if (!NpgsqlTypesHelper.TryGetNativeTypeInfo(value.GetType(), out type_info))
{
throw new InvalidCastException(String.Format(resman.GetString("Exception_ImpossibleToCast"), value.GetType()));
}*/
}
/// <summary>
/// The collection to which this parameter belongs, if any.
/// </summary>
public NpgsqlParameterCollection Collection
{
get { return collection; }
internal set
{
collection = value;
bound = false;
}
}
/// <summary>
/// Initializes a new instance of the <see cref="Npgsql.NpgsqlParameter">NpgsqlParameter</see>
/// class with the parameter m_Name and the data type.
/// </summary>
/// <param m_Name="parameterName">The m_Name of the parameter to map.</param>
/// <param m_Name="parameterType">One of the <see cref="System.Data.DbType">DbType</see> values.</param>
public NpgsqlParameter(String parameterName, NpgsqlDbType parameterType)
: this(parameterName, parameterType, 0, String.Empty)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="Npgsql.NpgsqlParameter">NpgsqlParameter</see>.
/// </summary>
/// <param m_Name="parameterName">The m_Name of the parameter to map.</param>
/// <param m_Name="parameterType">One of the <see cref="System.Data.DbType">DbType</see> values.</param>
public NpgsqlParameter(String parameterName, DbType parameterType)
: this(parameterName, NpgsqlTypesHelper.GetNativeTypeInfo(parameterType).NpgsqlDbType, 0, String.Empty)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="Npgsql.NpgsqlParameter">NpgsqlParameter</see>.
/// </summary>
/// <param m_Name="parameterName">The m_Name of the parameter to map.</param>
/// <param m_Name="parameterType">One of the <see cref="NpgsqlTypes.NpgsqlDbType">NpgsqlDbType</see> values.</param>
/// <param m_Name="size">The length of the parameter.</param>
public NpgsqlParameter(String parameterName, NpgsqlDbType parameterType, Int32 size)
: this(parameterName, parameterType, size, String.Empty)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="Npgsql.NpgsqlParameter">NpgsqlParameter</see>.
/// </summary>
/// <param m_Name="parameterName">The m_Name of the parameter to map.</param>
/// <param m_Name="parameterType">One of the <see cref="System.Data.DbType">DbType</see> values.</param>
/// <param m_Name="size">The length of the parameter.</param>
public NpgsqlParameter(String parameterName, DbType parameterType, Int32 size)
: this(parameterName, NpgsqlTypesHelper.GetNativeTypeInfo(parameterType).NpgsqlDbType, size, String.Empty)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="Npgsql.NpgsqlParameter">NpgsqlParameter</see>
/// </summary>
/// <param m_Name="parameterName">The m_Name of the parameter to map.</param>
/// <param m_Name="parameterType">One of the <see cref="NpgsqlTypes.NpgsqlDbType">NpgsqlDbType</see> values.</param>
/// <param m_Name="size">The length of the parameter.</param>
/// <param m_Name="sourceColumn">The m_Name of the source column.</param>
public NpgsqlParameter(String parameterName, NpgsqlDbType parameterType, Int32 size, String sourceColumn)
{
NpgsqlEventLog.LogMethodEnter(LogLevel.Debug, CLASSNAME, CLASSNAME, parameterName, parameterType, size, source_column);
this.ParameterName = parameterName;
NpgsqlDbType = parameterType; //Allow the setter to catch any exceptions.
this.size = size;
source_column = sourceColumn;
}
/// <summary>
/// Initializes a new instance of the <see cref="Npgsql.NpgsqlParameter">NpgsqlParameter</see>.
/// </summary>
/// <param m_Name="parameterName">The m_Name of the parameter to map.</param>
/// <param m_Name="parameterType">One of the <see cref="System.Data.DbType">DbType</see> values.</param>
/// <param m_Name="size">The length of the parameter.</param>
/// <param m_Name="sourceColumn">The m_Name of the source column.</param>
public NpgsqlParameter(String parameterName, DbType parameterType, Int32 size, String sourceColumn)
: this(parameterName, NpgsqlTypesHelper.GetNativeTypeInfo(parameterType).NpgsqlDbType, size, sourceColumn)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="Npgsql.NpgsqlParameter">NpgsqlParameter</see>.
/// </summary>
/// <param m_Name="parameterName">The m_Name of the parameter to map.</param>
/// <param m_Name="parameterType">One of the <see cref="NpgsqlTypes.NpgsqlDbType">NpgsqlDbType</see> values.</param>
/// <param m_Name="size">The length of the parameter.</param>
/// <param m_Name="sourceColumn">The m_Name of the source column.</param>
/// <param m_Name="direction">One of the <see cref="System.Data.ParameterDirection">ParameterDirection</see> values.</param>
/// <param m_Name="isNullable"><b>true</b> if the value of the field can be null, otherwise <b>false</b>.</param>
/// <param m_Name="precision">The total number of digits to the left and right of the decimal point to which
/// <see cref="Npgsql.NpgsqlParameter.Value">Value</see> is resolved.</param>
/// <param m_Name="scale">The total number of decimal places to which
/// <see cref="Npgsql.NpgsqlParameter.Value">Value</see> is resolved.</param>
/// <param m_Name="sourceVersion">One of the <see cref="System.Data.DataRowVersion">DataRowVersion</see> values.</param>
/// <param m_Name="value">An <see cref="System.Object">Object</see> that is the value
/// of the <see cref="Npgsql.NpgsqlParameter">NpgsqlParameter</see>.</param>
public NpgsqlParameter(String parameterName, NpgsqlDbType parameterType, Int32 size, String sourceColumn,
ParameterDirection direction, bool isNullable, byte precision, byte scale,
DataRowVersion sourceVersion, object value)
{
this.ParameterName = parameterName;
this.Size = size;
this.SourceColumn = sourceColumn;
this.Direction = direction;
this.IsNullable = isNullable;
this.Precision = precision;
this.Scale = scale;
this.SourceVersion = sourceVersion;
this.Value = value;
if (this.value == null)
{
this.value = DBNull.Value;
type_info = NpgsqlTypesHelper.GetNativeTypeInfo(typeof(String));
}
else
{
NpgsqlDbType = parameterType; //allow the setter to catch exceptions if necessary.
}
}
/// <summary>
/// Initializes a new instance of the <see cref="Npgsql.NpgsqlParameter">NpgsqlParameter</see>.
/// </summary>
/// <param m_Name="parameterName">The m_Name of the parameter to map.</param>
/// <param m_Name="parameterType">One of the <see cref="System.Data.DbType">DbType</see> values.</param>
/// <param m_Name="size">The length of the parameter.</param>
/// <param m_Name="sourceColumn">The m_Name of the source column.</param>
/// <param m_Name="direction">One of the <see cref="System.Data.ParameterDirection">ParameterDirection</see> values.</param>
/// <param m_Name="isNullable"><b>true</b> if the value of the field can be null, otherwise <b>false</b>.</param>
/// <param m_Name="precision">The total number of digits to the left and right of the decimal point to which
/// <see cref="Npgsql.NpgsqlParameter.Value">Value</see> is resolved.</param>
/// <param m_Name="scale">The total number of decimal places to which
/// <see cref="Npgsql.NpgsqlParameter.Value">Value</see> is resolved.</param>
/// <param m_Name="sourceVersion">One of the <see cref="System.Data.DataRowVersion">DataRowVersion</see> values.</param>
/// <param m_Name="value">An <see cref="System.Object">Object</see> that is the value
/// of the <see cref="Npgsql.NpgsqlParameter">NpgsqlParameter</see>.</param>
public NpgsqlParameter(String parameterName, DbType parameterType, Int32 size, String sourceColumn,
ParameterDirection direction, bool isNullable, byte precision, byte scale,
DataRowVersion sourceVersion, object value)
: this(
parameterName, NpgsqlTypesHelper.GetNativeTypeInfo(parameterType).NpgsqlDbType, size, sourceColumn, direction,
isNullable, precision, scale, sourceVersion, value)
{
}
// Implementation of IDbDataParameter
/// <summary>
/// Gets or sets the maximum number of digits used to represent the
/// <see cref="Npgsql.NpgsqlParameter.Value">Value</see> property.
/// </summary>
/// <value>The maximum number of digits used to represent the
/// <see cref="Npgsql.NpgsqlParameter.Value">Value</see> property.
/// The default value is 0, which indicates that the data provider
/// sets the precision for <b>Value</b>.</value>
[Category("Data"), DefaultValue((Byte)0)]
public Byte Precision
{
get
{
NpgsqlEventLog.LogPropertyGet(LogLevel.Debug, CLASSNAME, "Precision");
return precision;
}
set
{
NpgsqlEventLog.LogPropertySet(LogLevel.Normal, CLASSNAME, "Precision", value);
precision = value;
bound = false;
}
}
/// <summary>
/// Whether to use an explicit cast when included in a query.
/// </summary>
public Boolean UseCast
{
get
{
// Prevents casts to be added for null values when they aren't needed.
if (!useCast && (value == DBNull.Value || value == null))
return false;
//return useCast; //&& (value != DBNull.Value);
// This check for Datetime.minvalue and maxvalue is needed in order to
// workaround a problem when comparing date values with infinity.
// This is a known issue with postgresql and it is reported here:
// http://archives.postgresql.org/pgsql-general/2008-10/msg00535.php
// Josh's solution to add cast is documented here:
// http://pgfoundry.org/forum/message.php?msg_id=1004118
return useCast || DateTime.MinValue.Equals(value) || DateTime.MaxValue.Equals(value) || !NpgsqlTypesHelper.DefinedType(Value);
}
}
/// <summary>
/// Gets or sets the number of decimal places to which
/// <see cref="Npgsql.NpgsqlParameter.Value">Value</see> is resolved.
/// </summary>
/// <value>The number of decimal places to which
/// <see cref="Npgsql.NpgsqlParameter.Value">Value</see> is resolved. The default is 0.</value>
[Category("Data"), DefaultValue((Byte)0)]
public Byte Scale
{
get
{
NpgsqlEventLog.LogPropertyGet(LogLevel.Debug, CLASSNAME, "Scale");
return scale;
}
set
{
NpgsqlEventLog.LogPropertySet(LogLevel.Normal, CLASSNAME, "Scale", value);
scale = value;
bound = false;
}
}
/// <summary>
/// Gets or sets the maximum size, in bytes, of the data within the column.
/// </summary>
/// <value>The maximum size, in bytes, of the data within the column.
/// The default value is inferred from the parameter value.</value>
[Category("Data"), DefaultValue(0)]
public override Int32 Size
{
get
{
NpgsqlEventLog.LogPropertyGet(LogLevel.Debug, CLASSNAME, "Size");
return size;
}
set
{
NpgsqlEventLog.LogPropertySet(LogLevel.Normal, CLASSNAME, "Size", value);
size = value;
bound = false;
}
}
/// <summary>
/// Gets or sets the <see cref="System.Data.DbType">DbType</see> of the parameter.
/// </summary>
/// <value>One of the <see cref="System.Data.DbType">DbType</see> values. The default is <b>String</b>.</value>
[Category("Data"), RefreshProperties(RefreshProperties.All), DefaultValue(DbType.String)]
public override DbType DbType
{
get
{
NpgsqlEventLog.LogPropertyGet(LogLevel.Debug, CLASSNAME, "DbType");
if (type_info == null)
return defaultTypeInfo.DbType;
else
return TypeInfo.DbType;
} // [TODO] Validate data type.
set
{
NpgsqlEventLog.LogPropertySet(LogLevel.Normal, CLASSNAME, "DbType", value);
useCast = value != DbType.Object;
bound = false;
if (!NpgsqlTypesHelper.TryGetNativeTypeInfo(value, out type_info))
{
throw new InvalidCastException(String.Format(resman.GetString("Exception_ImpossibleToCast"), value));
}
}
}
/// <summary>
/// Gets or sets the <see cref="System.Data.DbType">DbType</see> of the parameter.
/// </summary>
/// <value>One of the <see cref="System.Data.DbType">DbType</see> values. The default is <b>String</b>.</value>
[Category("Data"), RefreshProperties(RefreshProperties.All), DefaultValue(NpgsqlDbType.Text)]
public NpgsqlDbType NpgsqlDbType
{
get
{
NpgsqlEventLog.LogPropertyGet(LogLevel.Debug, CLASSNAME, "NpgsqlDbType");
if (type_info == null)
return defaultTypeInfo.NpgsqlDbType;
else
return TypeInfo.NpgsqlDbType;
} // [TODO] Validate data type.
set
{
NpgsqlEventLog.LogPropertySet(LogLevel.Normal, CLASSNAME, "NpgsqlDbType", value);
useCast = true;
bound = false;
if (value == NpgsqlDbType.Array)
{
throw new ArgumentOutOfRangeException("value", resman.GetString("Exception_ParameterTypeIsOnlyArray"));
}
if (!NpgsqlTypesHelper.TryGetNativeTypeInfo(value, out type_info))
{
throw new InvalidCastException(String.Format(resman.GetString("Exception_ImpossibleToCast"), value));
}
}
}
internal NpgsqlNativeTypeInfo TypeInfo
{
get
{
if (type_info == null)
{
//type_info = NpgsqlTypesHelper.GetNativeTypeInfo(typeof(String));
return defaultTypeInfo;
}
return type_info;
}
}
/// <summary>
/// Gets or sets a value indicating whether the parameter is input-only,
/// output-only, bidirectional, or a stored procedure return value parameter.
/// </summary>
/// <value>One of the <see cref="System.Data.ParameterDirection">ParameterDirection</see>
/// values. The default is <b>Input</b>.</value>
[Category("Data"), DefaultValue(ParameterDirection.Input)]
public override ParameterDirection Direction
{
get
{
NpgsqlEventLog.LogPropertyGet(LogLevel.Normal, CLASSNAME, "Direction");
return direction;
}
set
{
NpgsqlEventLog.LogPropertySet(LogLevel.Normal, CLASSNAME, "Direction", value);
direction = value;
}
}
/// <summary>
/// Gets or sets a value indicating whether the parameter accepts null values.
/// </summary>
/// <value><b>true</b> if null values are accepted; otherwise, <b>false</b>. The default is <b>false</b>.</value>
#if WITHDESIGN
[EditorBrowsable(EditorBrowsableState.Advanced), Browsable(false), DefaultValue(false), DesignOnly(true)]
#endif
public override Boolean IsNullable
{
get
{
NpgsqlEventLog.LogPropertyGet(LogLevel.Debug, CLASSNAME, "IsNullable");
return is_nullable;
}
set
{
NpgsqlEventLog.LogPropertySet(LogLevel.Normal, CLASSNAME, "IsNullable", value);
is_nullable = value;
}
}
/// <summary>
/// Gets or sets the m_Name of the <see cref="Npgsql.NpgsqlParameter">NpgsqlParameter</see>.
/// </summary>
/// <value>The m_Name of the <see cref="Npgsql.NpgsqlParameter">NpgsqlParameter</see>.
/// The default is an empty string.</value>
[DefaultValue("")]
public override String ParameterName
{
get
{
NpgsqlEventLog.LogPropertyGet(LogLevel.Normal, CLASSNAME, "ParameterName");
return m_Name;
}
set
{
m_Name = value;
if (value == null)
{
m_Name = String.Empty;
}
// no longer prefix with : so that the m_Name returned is the m_Name set
m_Name = m_Name.Trim();
if (collection != null)
{
collection.InvalidateHashLookups();
bound = false;
}
NpgsqlEventLog.LogPropertySet(LogLevel.Normal, CLASSNAME, "ParameterName", m_Name);
}
}
/// <summary>
/// The m_Name scrubbed of any optional marker
/// </summary>
internal string CleanName
{
get
{
string name = ParameterName;
if (name[0] == ':' || name[0] == '@')
{
return name.Length > 1 ? name.Substring(1) : string.Empty;
}
return name;
}
}
/// <summary>
/// Gets or sets the m_Name of the source column that is mapped to the
/// <see cref="System.Data.DataSet">DataSet</see> and used for loading or
/// returning the <see cref="Npgsql.NpgsqlParameter.Value">Value</see>.
/// </summary>
/// <value>The m_Name of the source column that is mapped to the
/// <see cref="System.Data.DataSet">DataSet</see>. The default is an empty string.</value>
[Category("Data"), DefaultValue("")]
public override String SourceColumn
{
get
{
NpgsqlEventLog.LogPropertyGet(LogLevel.Normal, CLASSNAME, "SourceColumn");
return source_column;
}
set
{
NpgsqlEventLog.LogPropertySet(LogLevel.Normal, CLASSNAME, "SourceColumn", value);
source_column = value;
}
}
/// <summary>
/// Gets or sets the <see cref="System.Data.DataRowVersion">DataRowVersion</see>
/// to use when loading <see cref="Npgsql.NpgsqlParameter.Value">Value</see>.
/// </summary>
/// <value>One of the <see cref="System.Data.DataRowVersion">DataRowVersion</see> values.
/// The default is <b>Current</b>.</value>
[Category("Data"), DefaultValue(DataRowVersion.Current)]
public override DataRowVersion SourceVersion
{
get
{
NpgsqlEventLog.LogPropertyGet(LogLevel.Normal, CLASSNAME, "SourceVersion");
return source_version;
}
set
{
NpgsqlEventLog.LogPropertySet(LogLevel.Normal, CLASSNAME, "SourceVersion", value);
source_version = value;
}
}
/// <summary>
/// Gets or sets the value of the parameter.
/// </summary>
/// <value>An <see cref="System.Object">Object</see> that is the value of the parameter.
/// The default value is null.</value>
[TypeConverter(typeof(StringConverter)), Category("Data")]
public override Object Value
{
get
{
return this.value;
/*
NpgsqlEventLog.LogPropertyGet(LogLevel.Normal, CLASSNAME, "Value");
//return value;
NpgsqlBackendTypeInfo backendTypeInfo;
if (NpgsqlTypesHelper.TryGetBackendTypeInfo(type_info.Name, out backendTypeInfo))
{
return backendTypeInfo.ConvertToFrameworkType(NpgsqlValue);
}
throw new NotSupportedException();
*/
} // [TODO] Check and validate data type.
set
{
NpgsqlEventLog.LogPropertySet(LogLevel.Normal, CLASSNAME, "Value", value);
if ((value == null) || (value == DBNull.Value))
{
// don't really know what to do - leave default and do further exploration
// Default type for null values is String.
this.value = value;
this.npgsqlValue = value;
bound = false;
//if (type_info == null)
//{
// type_info = NpgsqlTypesHelper.GetNativeTypeInfo(typeof(String));
//}
return;
}
if (type_info == null && !NpgsqlTypesHelper.TryGetNativeTypeInfo(value.GetType(), out type_info))
{
throw new InvalidCastException(String.Format(resman.GetString("Exception_ImpossibleToCast"), value.GetType()));
}
if (backendTypeInfo == null && !NpgsqlTypesHelper.TryGetBackendTypeInfo(type_info.Name, out backendTypeInfo))
{
throw new InvalidCastException(String.Format(resman.GetString("Exception_ImpossibleToCast"), value.GetType()));
}
else
{
this.npgsqlValue = backendTypeInfo.ConvertToProviderType(value);
this.value = backendTypeInfo.ConvertToFrameworkType(npgsqlValue);
bound = false;
}
}
}
/// <summary>
/// Gets or sets the value of the parameter.
/// </summary>
/// <value>An <see cref="System.Object">Object</see> that is the value of the parameter.
/// The default value is null.</value>
[TypeConverter(typeof(StringConverter)), Category("Data")]
public Object NpgsqlValue
{
get
{
NpgsqlEventLog.LogPropertyGet(LogLevel.Normal, CLASSNAME, "NpgsqlValue");
return npgsqlValue;
}
set
{
NpgsqlEventLog.LogPropertySet(LogLevel.Normal, CLASSNAME, "NpgsqlValue", value);
Value = value;
bound = false;
}
}
/// <summary>
/// Reset DBType.
/// </summary>
public override void ResetDbType()
{
//type_info = NpgsqlTypesHelper.GetNativeTypeInfo(typeof(String));
type_info = null;
this.Value = Value;
bound = false;
}
/// <summary>
/// Source column mapping.
/// </summary>
public override bool SourceColumnNullMapping
{
get { return sourceColumnNullMapping; }
set { sourceColumnNullMapping = value; }
}
/// <summary>
/// Creates a new <see cref="Npgsql.NpgsqlParameter">NpgsqlParameter</see> that
/// is a copy of the current instance.
/// </summary>
/// <returns>A new <see cref="Npgsql.NpgsqlParameter">NpgsqlParameter</see> that is a copy of this instance.</returns>
public NpgsqlParameter Clone()
{
// use fields instead of properties
// to avoid auto-initializing something like type_info
NpgsqlParameter clone = new NpgsqlParameter();
clone.precision = precision;
clone.scale = scale;
clone.size = size;
clone.type_info = type_info;
clone.direction = direction;
clone.is_nullable = is_nullable;
clone.m_Name = m_Name;
clone.source_column = source_column;
clone.source_version = source_version;
clone.value = value;
clone.sourceColumnNullMapping = sourceColumnNullMapping;
return clone;
}
object ICloneable.Clone()
{
return Clone();
}
internal bool Bound
{
get { return bound; }
set { bound = value; }
}
}
}