#region Apache Notice
/*****************************************************************************
* $Revision: 476843 $
* $LastChangedDate: 2006-11-19 17:07:45 +0100 (dim., 19 nov. 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;
using System.Data;
using IBatisNet.DataMapper.Configuration.ParameterMapping;
using IBatisNet.DataMapper.Configuration.ResultMapping;
#endregion
namespace IBatisNet.DataMapper.TypeHandlers{
/// <summary>
/// Custom type handler for adding a TypeHandlerCallback
/// </summary>
public sealed class CustomTypeHandler : BaseTypeHandler
{
private ITypeHandlerCallback _callback = null;
/// <summary>
/// Initializes a new instance of the <see cref="CustomTypeHandler"/> class.
/// </summary>
/// <param name="callback">The callback.</param>
public CustomTypeHandler(ITypeHandlerCallback callback)
{
_callback = callback;
}
/// <summary>
/// Gets or sets the callback.
/// </summary>
/// <value>The callback.</value>
public ITypeHandlerCallback Callback
{
get { return _callback; }
set { /* nop */ }
}
/// <summary>
/// Performs processing on a value before it is used to set
/// the parameter of a IDbCommand.
/// </summary>
/// <param name="dataParameter"></param>
/// <param name="parameterValue">The value to be set</param>
/// <param name="dbType">Data base type</param>
public override void SetParameter(IDataParameter dataParameter, object parameterValue, string dbType)
{
IParameterSetter setter = new ParameterSetterImpl(dataParameter);
_callback.SetParameter(setter, parameterValue);
}
/// <summary>
/// Gets a column value by the name
/// </summary>
/// <param name="mapping"></param>
/// <param name="dataReader"></param>
/// <returns></returns>
public override object GetValueByName(ResultProperty mapping, IDataReader dataReader)
{
IResultGetter getter = new ResultGetterImpl(dataReader, mapping.ColumnName);
return _callback.GetResult(getter);
}
/// <summary>
/// Gets a column value by the index
/// </summary>
/// <param name="mapping"></param>
/// <param name="dataReader"></param>
/// <returns></returns>
public override object GetValueByIndex(ResultProperty mapping, IDataReader dataReader)
{
IResultGetter getter = new ResultGetterImpl(dataReader, mapping.ColumnIndex);
return _callback.GetResult(getter);
}
/// <summary>
/// Converts the String to the type that this handler deals with
/// </summary>
/// <param name="type">the tyepe of the property (used only for enum conversion)</param>
/// <param name="s">the String value</param>
/// <returns>the converted value</returns>
public override object ValueOf(Type type, string s)
{
return _callback.ValueOf(s);
}
/// <summary>
/// Retrieve ouput database value of an output parameter
/// </summary>
/// <param name="outputValue">ouput database value</param>
/// <param name="parameterType">type used in EnumTypeHandler</param>
/// <returns></returns>
public override object GetDataBaseValue(object outputValue, Type parameterType)
{
IResultGetter getter = new ResultGetterImpl(outputValue);
return _callback.GetResult(getter);
}
/// <summary>
/// Gets a value indicating whether this instance is simple type.
/// </summary>
/// <value>
/// <c>true</c> if this instance is simple type; otherwise, <c>false</c>.
/// </value>
public override bool IsSimpleType
{
get { return true; }
}
/// <summary>
/// The null value for this type
/// </summary>
/// <value></value>
public override object NullValue
{
get { return _callback.NullValue; }
}
}
}
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