public void TestDynamicProjection()
{
var data = new List <Model>
{
new Model()
{
Id = 1, Name = "Name1"
},
new Model()
{
Id = 2, Name = "Name2"
},
new Model()
{
Id = 3, Name = "Name3"
},
};
var dp = new ProjectionBuilder(typeof(Model), null)
.Auto("Active")
.Member("Id", map => map
.FromExpression("Id"))
.Member("Descr", map => map
.FromExpression("Name"))
.Member("CodeDescr", map => map
.FromExpression("Id.ToString() + \" - \" + Name"))
.Member("Constant", map => map
.FromValue(5))
.BuildWithDynamicType("DynamicProjectionTestDto");
var predicateTreeBuilder =
new PredicateTreeBuilder(typeof(Model))
.Has("Id", ExpressionOperator.Equals, 1)
.Or("CodeDescr", ExpressionOperator.IsNotNullOrEmpty, null)
.Or("Descr.Length", ExpressionOperator.GreaterThan, 1)
.Or("Active", ExpressionOperator.DoesNotEqual, false);
var q = dp.BuildQuery(
data.AsQueryable(),
new[] { "Id", "Descr" },
predicateTreeBuilder.RootNode)
.ToList();
}
public void Can_Project_From_Object_To_Type_Using_Ctor()
{
var source = new[]
{
new { Prop1 = 1, Prop2 = "1", Active = true },
new { Prop1 = 2, Prop2 = "2", Active = false },
new { Prop1 = 3, Prop2 = "3", Active = true },
};
var sourceElement = source.First();
var projection = new ProjectionBuilder(source.First().GetType(), typeof(Model))
.Member(nameof(Model.Id), map => map
.UsingCtorParameter(nameof(Model.Id).ToLower())
.FromExpression(nameof(sourceElement.Prop1)))
.CtorParameter(nameof(Model.Name).ToLower(), map => map
.FromExpression(nameof(sourceElement.Prop2)))
.CtorParameter(nameof(Model.Active).ToLower(), map => map
.FromExpression(nameof(sourceElement.Active)))
.Build();
var result = projection
.BuildQuery(source.AsQueryable())
.ToList();
var expectedResult = new List <Model>
{
new Model()
{
Id = 1, Name = "1", Active = true
},
new Model()
{
Id = 2, Name = "2", Active = false
},
new Model()
{
Id = 3, Name = "3", Active = true
},
}
.ToExpectedObject();
expectedResult.ShouldEqual(result.Cast <Model>().ToList());
}
