public static IEdmModel GetExplicitModel()
{
ODataModelBuilder builder = new ODataModelBuilder();
EntityTypeConfiguration <Window> windowType = builder.EntityType <Window>();
windowType.HasKey(a => a.Id);
windowType.Property(a => a.Name).IsRequired();
windowType.ComplexProperty(w => w.CurrentShape).IsNullable();
windowType.CollectionProperty(w => w.OptionalShapes);
windowType.CollectionProperty(w => w.PolygonalShapes);
windowType.HasOptional <Window>(w => w.Parent);
ComplexTypeConfiguration <Shape> shapeType = builder.ComplexType <Shape>();
shapeType.Property(s => s.HasBorder);
shapeType.Abstract();
ComplexTypeConfiguration <Circle> circleType = builder.ComplexType <Circle>();
circleType.ComplexProperty(c => c.Center);
circleType.Property(c => c.Radius);
circleType.DerivesFrom <Shape>();
ComplexTypeConfiguration <Polygon> polygonType = builder.ComplexType <Polygon>();
polygonType.CollectionProperty(p => p.Vertexes);
polygonType.DerivesFrom <Shape>();
ComplexTypeConfiguration <Rectangle> rectangleType = builder.ComplexType <Rectangle>();
rectangleType.ComplexProperty(r => r.TopLeft);
rectangleType.Property(r => r.Width);
rectangleType.Property(r => r.Height);
rectangleType.DerivesFrom <Polygon>();
ComplexTypeConfiguration <Point> pointType = builder.ComplexType <Point>();
pointType.Property(p => p.X);
pointType.Property(p => p.Y);
EntitySetConfiguration <Window> windows = builder.EntitySet <Window>("Windows");
// windows.HasEditLink(link, true);
// windows.HasIdLink(link, true);
windows.HasOptionalBinding(c => c.Parent, "Windows");
builder.Namespace = typeof(Window).Namespace;
return(builder.GetEdmModel());
}