Closed
Description
Suppose the following LINQPad program:
void Main()
{
var mapper = new Mapper(new MapperConfiguration(config =>
{
config.CreateMap<Shape, ShapeDto>()
.ForMember(dto => dto.ShapeType, o => o.MapFrom(s => s is Triangle ? ShapeType.Triangle : s is Circle ? ShapeType.Circle : ShapeType.Unknown))
.ForMember(dto => dto.DynamicProperties, o => o.Ignore());
//config.CreateMap<Triangle, ShapeDto>()
// .IncludeBase<Shape, ShapeDto>();
//
//config.CreateMap<Circle, ShapeDto>()
// .IncludeBase<Shape, ShapeDto>();
}));
// Where clause where the parameter is not remapped.
Expression<Func<ShapeDto, bool>> where = x => x.ShapeType == ShapeType.Circle;
// Where clause where the parameter is remapped.
//Expression<Func<ShapeDto, bool>> where = x => x.Name == "A";
var whereMapped = mapper.MapExpression<Expression<Func<Shape, bool>>>(where).Dump();
whereMapped.Compile()(new Circle()).Dump();
}
// Define other methods and classes here
public class Shape
{
public string Name { get; set; }
}
public class Triangle : Shape
{
public double A { get; set; }
public double B { get; set; }
public double C { get; set; }
}
public class Circle : Shape
{
public double R { get; set; }
}
public enum ShapeType
{
Unknown,
Triangle,
Circle,
}
public class ShapeDto
{
public string Name { get; set; }
public IDictionary<string, object> DynamicProperties { get; set; }
public ShapeType ShapeType { get; set; }
}When mapping the where expression x => x.ShapeType == ShapeType.Circle, it should map to x => (Convert(IIF((x Is Triangle), Triangle, IIF((x Is Circle), Circle, Unknown))) == 2) but instead, it maps to x => (Convert(IIF((s Is Triangle), Triangle, IIF((s Is Circle), Circle, Unknown))) == 2) where the parameter x is not remapped to parameter s.
It ultimately throws an InvalidOperationException with the message variable 's' of type 'UserQuery+Shape' referenced from scope '', but it is not defined.
Is there a configuration missing or could it be related to a specific case not handled in the XpressionMapperVisitor?