Writing mapping methods is a machine job. Do not waste your time, let Mapster do it.
PM> Install-Package Mapster
Mapster creates the destination object and maps values to it.
var destObject = sourceObject.Adapt<Destination>();
You create the object, Mapster maps to the object.
sourceObject.Adapt(destObject);
Mapster also provides extensions to map queryables.
using (MyDbContext context = new MyDbContext())
{
// Build a Select Expression from DTO
var destinations = context.Sources.ProjectToType<Destination>().ToList();
// Versus creating by hand:
var destinations = context.Sources.Select(c => new Destination {
Id = p.Id,
Name = p.Name,
Surname = p.Surname,
....
})
.ToList();
}
- Automatically generate mapping code on build
- Define setting to nested mapping
ISet
,IDictionary
,IReadOnlyDictionary
supportEmptyCollectionIfNull
,CreateNewIfNull
DestinationTransform- Several fixes
- New plugins
Mapster was designed to be efficient on both speed and memory. You could gain a 4x performance improvement whilst using only 1/3 of memory. And you could gain up to 12x faster performance with
Method | Mean | StdDev | Error | Gen 0 | Gen 1 | Gen 2 | Allocated |
---|---|---|---|---|---|---|---|
'Mapster 6.0.0' | 108.59 ms | 1.198 ms | 1.811 ms | 31000.0000 | - | - | 124.36 MB |
'Mapster 6.0.0 (Roslyn)' | 38.45 ms | 0.494 ms | 0.830 ms | 31142.8571 | - | - | 124.36 MB |
'Mapster 6.0.0 (FEC)' | 37.03 ms | 0.281 ms | 0.472 ms | 29642.8571 | - | - | 118.26 MB |
'Mapster 6.0.0 (Codegen)' | 34.16 ms | 0.209 ms | 0.316 ms | 31133.3333 | - | - | 124.36 MB |
'ExpressMapper 1.9.1' | 205.78 ms | 5.357 ms | 8.098 ms | 59000.0000 | - | - | 236.51 MB |
'AutoMapper 10.0.0' | 420.97 ms | 23.266 ms | 35.174 ms | 87000.0000 | - | - | 350.95 MB |
Step-into debugging lets you debug your mapping and inspect values just like your code.
Code generation allows you to
- Validate mapping at compile time
- Getting raw performance
- Seeing your mapping code & debugging
- Finding usage of your models' properties
There are currently two tools which you can choose based on your preferences.
- Mapster.Tool NEW!
- TextTemplate
https://github.com/MapsterMapper/Mapster/releases
https://github.com/MapsterMapper/Mapster/wiki
JetBrains kindly provides Mapster with a free open-source licence for their Resharper and Rider.
- Resharper makes Visual Studio a much better IDE
- Rider is fast & powerful cross platform .NET IDE