T_CodeJam_Mapping_Map

Map Class

Mapper helper class.

Inheritance Hierarchy

System.Object
  CodeJam.Mapping.Map
Namespace: CodeJam.Mapping
Assembly: CodeJam.Blocks (in CodeJam.Blocks.dll) Version: 2.0.0.0

Syntax

C#

public static class Map

VB

<ExtensionAttribute>
Public NotInheritable Class Map

F#

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

The Map type exposes the following members.

Methods

 

	Name	Description
	DeepCopy(T)	Performs deep copy.
	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
                    )
                {
                    .Block(System.Collections.Generic.IDictionary`2[System.Object,System.Object] $ldic2)
                    {
                        $ldic2 = $dic1;
                        (Class2)(.Call CodeJam.Mapping.ExpressionBuilder.GetValue($ldic2,$from)
                        ??
                        .Block(Class2 $obj3)
                        {
                            $obj3 = .If ($to == null) { .New Class2() } .Else { $to };

                            .Call CodeJam.Mapping.ExpressionBuilder.Add($ldic2, $from, $obj3);

                            $obj3.Prop1  = .Call ($from.Prop1).ToString();

                            $obj3.Field1 = .If ($from.Field1 != null)
                            {
                                (System.Nullable`1[System.DateTime]).Call System.DateTime.Parse(
                                    $from.Field1,
                                    null,
                                    .Constant<System.Globalization.DateTimeStyles>(NoCurrentDateDefault))
                            }
                            .Else
                            {
                                null
                            };

                            $obj3
                        })
                    }
                }".Remove(" ", "\t", "\r", "\n")));
    }
}

See Also

Reference

CodeJam.Mapping Namespace