public StructureMapItem <TSource, TDestination, TResult> MapIdProperty <TResult>(Expression <Func <TSource, TResult> > sourceExpression, Expression <Func <TDestination, TResult> > destinationExpression = null)
{
destinationExpression = destinationExpression ?? sourceExpression as Expression <Func <TDestination, TResult> >;
StructureMapItem <TSource, TDestination, TResult> idMapping = new StructureMapItem <TSource, TDestination, TResult>(sourceExpression, destinationExpression);
idStructureMap = idMapping;
return(idMapping);
}
private static Expression GetIdEvaluatorFromMapper <TSource, TDestination>(IStructureMap mapper)
where TSource : class
{
IStructureMapItem <TSource, TDestination> idProperty =
(mapper as StructureMap <TSource, TDestination>).GetIdPropertyItem();
MethodInfo methodInfo =
ExpressionHelper.MakeGenericMethod(() => GetIdEvaluatorFromMappingItem <string, string, string>(null),
typeof(TSource), mapper.DestinationType, idProperty.ResultType);
return(methodInfo.Invoke(null, new object[] { idProperty }) as Expression);
}
public void Unmap <TResult>(Expression <Func <TSource, TResult> > sourceExpression)
{
string propertyName = ExpressionHelper.GetPropertyName(sourceExpression.Body);
if (idStructureMap != null && idStructureMap.SourceName == propertyName)
{
idStructureMap = null;
}
var structureMap = structureMapList.FirstOrDefault(m => m.SourceName == propertyName);
if (structureMap != null)
{
structureMapList.Remove(structureMap);
}
}
private static Expression GetIdEvaluatorFromMappingItem <TSource, TDestination, TResult>(
IStructureMapItem <TSource, TDestination> mappingItem)
{
return(Expression.Constant((mappingItem as StructureMapItem <TSource, TDestination, TResult>).PropertyGetter));
}
