#region Apache Notice
/*****************************************************************************
* $Revision: 408164 $
* $LastChangedDate: 2006-05-21 14:27:09 +0200 (dim., 21 mai 2006) $
* $LastChangedBy: gbayon $
*
* iBATIS.NET Data Mapper
* Copyright (C) 2006/2005 - The Apache Software Foundation
*
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
********************************************************************************/
#endregion
#region Using
using System.Data;
#endregion
namespace IBatisNet.DataMapper.TypeHandlers{
/// <summary>
/// Description rsume de ResultGetterImpl.
/// </summary>
public sealed class ResultGetterImpl : IResultGetter
{
#region Fields
private int _columnIndex = int.MinValue;
private string _columnName = string.Empty;
private object _outputValue = null;
private IDataReader _dataReader = null;
#endregion
#region Constructors
/// <summary>
/// Creates an instance for a IDataReader and column index
/// </summary>
/// <param name="dataReader">The dataReader</param>
/// <param name="columnIndex">the column index</param>
public ResultGetterImpl(IDataReader dataReader, int columnIndex)
{
_columnIndex = columnIndex;
_dataReader = dataReader;
}
/// <summary>
/// Creates an instance for a IDataReader and column name
/// </summary>
/// <param name="dataReader">The dataReader</param>
/// <param name="columnName">the column name</param>
public ResultGetterImpl(IDataReader dataReader, string columnName)
{
_columnName= columnName;
_dataReader = dataReader;
}
/// <summary>
/// Creates an instance for an output parameter
/// </summary>
/// <param name="outputValue">value of an output parameter (store procedure)</param>
public ResultGetterImpl(object outputValue)
{
_outputValue = outputValue;
}
#endregion
#region IResultGetter members
/// <summary>
/// Returns the underlying IDataReader
/// </summary>
/// <remarks>Null for an output parameter</remarks>
public IDataReader DataReader
{
get { return _dataReader; }
}
/// <summary>
/// Get the parameter value
/// </summary>
public object Value
{
get
{
if (_columnName.Length >0)
{
int index = _dataReader.GetOrdinal(_columnName);
return _dataReader.GetValue(index);
}
else if (_columnIndex>=0)
{
return _dataReader.GetValue(_columnIndex);
}
else
{
return _outputValue;
}
}
}
#endregion
}
}
|