#region Apache Notice
/*****************************************************************************
* $Revision: 374175 $
* $LastChangedDate: 2006-04-25 19:40:27 +0200 (mar., 25 avr. 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
using System.Data;
using IBatisNet.DataMapper.Configuration.ResultMapping;
using IBatisNet.DataMapper.Scope;
namespace IBatisNet.DataMapper.MappedStatements.PropertyStrategy{
/// <summary>
/// <see cref="IPropertyStrategy"/> implementation when a 'resultMapping' attribute exists
/// on a <see cref="ResultProperty"/>.
/// </summary>
public sealed class ResultMapStrategy : BaseStrategy, IPropertyStrategy
{
#region IPropertyStrategy Members
/// <summary>
/// Sets value of the specified <see cref="ResultProperty"/> on the target object
/// when a 'resultMapping' attribute exists
/// on the <see cref="ResultProperty"/>.
/// </summary>
/// <param name="request">The request.</param>
/// <param name="resultMap">The result map.</param>
/// <param name="mapping">The ResultProperty.</param>
/// <param name="target">The target.</param>
/// <param name="reader">The reader.</param>
/// <param name="keys">The keys</param>
public void Set(RequestScope request, IResultMap resultMap,
ResultProperty mapping, ref object target, IDataReader reader, object keys)
{
object obj = Get(request, resultMap, mapping, ref target, reader);
// Sets created object on the property
resultMap.SetValueOfProperty( ref target, mapping, obj );
}
/// <summary>
/// Gets the value of the specified <see cref="ResultProperty"/> that must be set on the target object.
/// </summary>
/// <param name="request">The request.</param>
/// <param name="resultMap">The result map.</param>
/// <param name="mapping">The mapping.</param>
/// <param name="reader">The reader.</param>
/// <param name="target">The target object</param>
public object Get(RequestScope request, IResultMap resultMap, ResultProperty mapping, ref object target, IDataReader reader)
{
object[] parameters = null;
bool isParameterFound = false;
IResultMap resultMapping = mapping.NestedResultMap.ResolveSubMap(reader);
if (resultMapping.Parameters.Count > 0)
{
parameters = new object[resultMapping.Parameters.Count];
// Fill parameters array
for (int index = 0; index < resultMapping.Parameters.Count; index++)
{
ResultProperty resultProperty = resultMapping.Parameters[index];
parameters[index] = resultProperty.ArgumentStrategy.GetValue(request, resultProperty, ref reader, null);
request.IsRowDataFound = request.IsRowDataFound || (parameters[index] != null);
isParameterFound = isParameterFound || (parameters[index] != null);
}
}
object obj = null;
// If I have a constructor tag and all argumments values are null, the obj is null
if (resultMapping.Parameters.Count > 0 && isParameterFound == false)
{
obj = null;
}
else
{
obj = resultMapping.CreateInstanceOfResult(parameters);
// Fills properties on the new object
if (this.FillObjectWithReaderAndResultMap(request, reader, resultMapping, ref obj) == false)
{
obj = null;
}
}
return obj;
}
#endregion
}
}
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