prs/prs.classes/Entities/Customer/CustomerProduct.cs

using System;
using InABox.Core;

namespace Comal.Classes
{
    
    public interface ICustomerProduct
    {
        CustomerLink Customer { get; set; }
        ProductLink Product { get; set; }
        ProductCharge Charge { get; set; }
    }
    
    [UserTracking(typeof(Product))]
    public class CustomerProduct : Entity, IPersistent, IRemotable, 
        ICustomerProduct,
        IManyToMany<Customer, Product>, 
        IManyToMany<Product, Customer>, 
        ILicense<ProductManagementLicense>, 
        IExportable,
        IImportable
    {
        [EntityRelationship(DeleteAction.Cascade)]
        [EditorSequence(1)]
        public CustomerLink Customer { get; set; }

        [EntityRelationship(DeleteAction.Cascade)]
        [EditorSequence(2)]
        public ProductLink Product { get; set; }

        [ProductChargeEditor]
        [EditorSequence(3)]
        public ProductCharge Charge { get; set; }

        protected override void Init()
        {
            base.Init();
            Customer = new CustomerLink();
            Product = new ProductLink(() => this);
            Charge = new ProductCharge();
        }
    }
    
    public class CustomerProductUnionGenerator : AutoEntityUnionGenerator<ICustomerProduct>
    {
        protected override void Configure()
        {
            AddTable<CustomerProduct>();
            AddTable<Product>()
                .AddConstant(x => x.Customer.ID, Guid.Empty)
                .AddConstant(x=>x.Product.ID, new Column<Product>(x=>x.ID));
        }

        public override bool Distinct => false;

        public override Column<ICustomerProduct>[] IDColumns => new Column<ICustomerProduct>[]
        {
            new Column<ICustomerProduct>(x => x.Customer.ID),
            new Column<ICustomerProduct>(x => x.Product.ID)
        };
    }

    [AutoEntity(typeof(CustomerProductUnionGenerator))]
    public class CustomerProductSummary : Entity, IRemotable, IPersistent, ICustomerProduct, ILicense<CoreLicense>
    {
        public CustomerLink Customer { get; set; }

        public ProductLink Product { get; set; }

        public ProductCharge Charge { get; set; }

        protected override void Init()
        {
            base.Init();
            Customer = new CustomerLink();
            Product = new ProductLink(() => this);
            Charge = new ProductCharge();
        }
    }
    
}