prs/prs.classes/Entities/Product/CostSheet/CostSheetKit.cs

using InABox.Core;
using System.Linq;

namespace Comal.Classes
{
    [UserTracking(typeof(Quote))]
    public class CostSheetKit : Entity, IPersistent, IRemotable, ISequenceable, IOneToMany<CostSheetSection>, IOneToMany<CostSheet>,
        ILicense<QuotesManagementLicense>
    {
        [EntityRelationship(DeleteAction.Cascade)]
        public CostSheetLink CostSheet { get; set; }

        [EntityRelationship(DeleteAction.SetNull)]
        public CostSheetSectionLink Section { get; set; }

        private class KitLookup : LookupDefinitionGenerator<Kit, CostSheetKit>
        {
            public override Filter<Kit> DefineFilter(CostSheetKit[] items)
            {
                var result = new Filter<Kit>(x => x.Active).IsEqualTo(true);
                if (items.Any())
                    result = result.And(x => x.Section.ID).IsEqualTo(items.First().Section.ID);
                return result;
            }

            public override Columns<CostSheetKit> DefineFilterColumns()
                => Columns.None<CostSheetKit>().Add(x => x.Section.ID);
        }
        [LookupDefinition(typeof(KitLookup))]
        [EntityRelationship(DeleteAction.SetNull)]
        public KitLink Kit { get; set; }

        [NullEditor]
        public long Sequence { get; set; }
    }
}