model.ts

import { ObjectID } from "mongodb";
import { Edm } from "../lib/index";

const toObjectID = _id => _id && !(_id instanceof ObjectID) ? ObjectID.createFromHexString(_id) : _id;

@Edm.Annotate({
    term: "UI.DisplayName",
    string: "Products"
})
export class Product{
    @Edm.Key
    @Edm.Computed
    @Edm.TypeDefinition(ObjectID)
    @Edm.Annotate({
        term: "UI.DisplayName",
        string: "Product identifier"
    }, {
        term: "UI.ControlHint",
        string: "ReadOnly"
    })
    _id:ObjectID

    @Edm.TypeDefinition(ObjectID)
    @Edm.Required
    CategoryId:ObjectID

    @Edm.ForeignKey("CategoryId")
    @Edm.EntityType(Edm.ForwardRef(() => Category))
    @Edm.Partner("Products")
    Category:Category

    @Edm.Boolean
    Discontinued:boolean

    @Edm.String
    @Edm.Annotate({
        term: "UI.DisplayName",
        string: "Product title"
    }, {
        term: "UI.ControlHint",
        string: "ShortText"
    })
    Name:string

    @Edm.String
    @Edm.Annotate({
        term: "UI.DisplayName",
        string: "Product English name"
    }, {
        term: "UI.ControlHint",
        string: "ShortText"
    })
    QuantityPerUnit:string

    @Edm.Decimal
    @Edm.Annotate({
        term: "UI.DisplayName",
        string: "Unit price of product"
    }, {
        term: "UI.ControlHint",
        string: "Decimal"
    })
    UnitPrice:number
}

@Edm.OpenType
@Edm.Annotate({
    term: "UI.DisplayName",
    string: "Categories"
})
export class Category{
    @Edm.Key
    @Edm.Computed
    @Edm.TypeDefinition(ObjectID)
    @Edm.Annotate({
        term: "UI.DisplayName",
        string: "Category identifier"
    },
    {
        term: "UI.ControlHint",
        string: "ReadOnly"
    })
    _id:ObjectID

    @Edm.String
    Description:string

    @Edm.String
    @Edm.Annotate({
        term: "UI.DisplayName",
        string: "Category name"
    },
    {
        term: "UI.ControlHint",
        string: "ShortText"
    })
    Name:string

    @Edm.ForeignKey("CategoryId")
    @Edm.Collection(Edm.EntityType(Product))
    @Edm.Partner("Category")
    Products:Product[]

    @Edm.Collection(Edm.String)
    @Edm.Function
    echo(){
        return ["echotest"];
    }
}

export class NorthwindTypes extends Edm.ContainerBase{
    @Edm.String
    @Edm.URLDeserialize((value:string) => new ObjectID(value))
    @Edm.Deserialize(value => new ObjectID(value))
    ObjectID = ObjectID
}