prs/prs.classes/Entities/Kanban/KanbanLookups.cs

using System;
using System.Linq;
using InABox.Core;

namespace Comal.Classes
{
    public class KanbanLookups : EntityLookup<Kanban>, ILookupDefinition<Kanban, Assignment>
    {
        public Filter<Kanban> DefineFilter(Assignment[] items)
        {
            if (items == null || !items.Any())
                return DefineFilter();
            return new Filter<Kanban>(x => x.Closed).IsEqualTo(DateTime.MinValue).And(x => x.EmployeeLink.ID)
                .IsEqualTo(items.First().EmployeeLink.ID);
        }

        Columns<Assignment> ILookupDefinition<Kanban, Assignment>.DefineFilterColumns()
            => new Columns<Assignment>(x => x.EmployeeLink.ID);

        public override Columns<Kanban> DefineColumns()
        {
            return new Columns<Kanban>(
                x => x.ID,
                x => x.Number,
                x => x.Title
            );
        }

        public override Filter<Kanban> DefineFilter()
        {
            return new Filter<Kanban>(x => x.Closed).IsEqualTo(DateTime.MinValue);
        }

        public override SortOrder<Kanban> DefineSortOrder()
        {
            return new SortOrder<Kanban>(x => x.Number);
        }
    }
}