T_CodeJam_Mapping_Map

Map Class

Mapper helper class.

Inheritance Hierarchy

System.Object
  CodeJam.Mapping.Map
Namespace: CodeJam.Mapping
Assembly: CodeJam (in CodeJam.dll) Version: 1.0.0.0 (1.0.0.0)

Syntax

C#

public static class Map

VB

Public NotInheritable Class Map

F#

[<AbstractClassAttribute>]
[<SealedAttribute>]
type Map =  class end

Methods

 

	Name	Description
	GetMapper(TFrom, TTo)()	Returns a mapper to map an object of TFrom type to an object of TTo type.
	GetMapper(TFrom, TTo)(Func(MapperBuilder(TFrom, TTo), MapperBuilder(TFrom, TTo)))	Returns a mapper to map an object of TFrom type to an object of TTo type.

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Examples

This example shows how to map one object to another. C#

[TestFixture]
public class MapTests
{
  private class Class1
  {
    public int Prop1 { get; set; }
    public string Field1;
  }

  private class Class2
  {
    public string Prop1 { get; set; }
    public DateTime? Field1;
  }

  private static readonly Mapper<Class1, Class2> _class1ToClass2Mapper =
    Map.GetMapper<Class1, Class2>();

  [Test]
  public void Test1()
  {
    // Create new Class2 and map Class1 to it.
    //
    var c2 = _class1ToClass2Mapper.Map(
      new Class1
      {
        Prop1 = 41,
        Field1 = "2016-01-01"
      });

    Assert.That(c2.Prop1, Is.EqualTo("41"));
    Assert.That(c2.Field1?.Year, Is.EqualTo(2016));

    var expr = _class1ToClass2Mapper.GetMapperExpressionEx();

    Assert.That(
      expr.GetDebugView().Remove(" ", "\t", "\r", "\n", "CodeJam.Mapping.Examples.MapTests+"),
      Is.EqualTo(@"
        .Lambda #Lambda1<System.Func`2[Class1,Class2]>(Class1 $from)
        {
          .New Class2()
          {
            Prop1  = .Call ($from.Prop1).ToString(),
            Field1 = .If ($from.Field1 != null)
            {
              (System.Nullable`1[System.DateTime]).Call System.DateTime.Parse(
                $from.Field1,
                null,
                .Constant<System.Globalization.DateTimeStyles>(NoCurrentDateDefault))
            } .Else {
              null
            }
          }
        }".Remove(" ", "\t", "\r", "\n")));
  }

  [Test]
  public void Test2()
  {
    var c2 = new Class2();

    // Map Class1 to existing Class2.
    //
    _class1ToClass2Mapper.Map(
      new Class1
      {
        Prop1 = 41,
        Field1 = "2016-01-01"
      }, c2);

    Assert.That(c2.Prop1, Is.EqualTo("41"));
    Assert.That(c2.Field1?.Year, Is.EqualTo(2016));

    var expr = _class1ToClass2Mapper.GetMapperExpression();

    Assert.That(
      expr.GetDebugView().Remove(" ", "\t", "\r", "\n", "CodeJam.Mapping.Examples.MapTests+"),
      Is.EqualTo(@"
        .Lambda #Lambda1<System.Func`4[
          Class1,
          Class2,
          System.Collections.Generic.IDictionary`2[System.Object,System.Object],
          Class2]>
          (
            Class1 $from,
            Class2 $to,
            System.Collections.Generic.IDictionary`2[System.Object,System.Object] $dic1
          )
        {
          (Class2)(.Call CodeJam.Mapping.ExpressionBuilderHelper.GetValue($dic1,$from)
          ??
          .Block(Class2 $obj2)
          {
            $obj2 = .If ($to == null) { .New Class2() } .Else { $to };

            .Call CodeJam.Mapping.ExpressionBuilderHelper.Add($dic1, $from, $obj2);

            $obj2.Prop1  = .Call ($from.Prop1).ToString();

            $obj2.Field1 = .If ($from.Field1 != null)
            {
              (System.Nullable`1[System.DateTime]).Call System.DateTime.Parse(
                $from.Field1,
                null,
                .Constant<System.Globalization.DateTimeStyles>(NoCurrentDateDefault))
            }
            .Else
            {
              null
            };

            $obj2
          })
        }".Remove(" ", "\t", "\r", "\n")));
  }
}

See Also

Reference

CodeJam.Mapping Namespace