EnVisageOnline/Main/Source/EnVisage/Code/BLL/StatusManager.cs

using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.Linq;
using System.Web;
using EnVisage.Models;

namespace EnVisage.Code.BLL
{
    public class StatusManager : ManagerBase<Status, StatusModel>
    {
        public StatusManager(EnVisageEntities dbContext)
            : base(dbContext)
        {
        }
        protected override Status InitInstance()
        {
            return new Status { Id = Guid.NewGuid() };
        }

        protected override Status RetrieveReadOnlyById(Guid key)
        {
            return DataTable.AsNoTracking().FirstOrDefault(t => t.Id == key);
        }

        public override DbSet<Status> DataTable
        {
            get
            {
                return DbContext.Status;
            }
        }
        public StatusModel GetTypeByName(string name)
        {
            return (StatusModel) DataTable.Where(x => x.Name == name).FirstOrDefault();
        }

        public StatusModel GetTypeById(Guid id)
        {
            return (StatusModel) RetrieveReadOnlyById(id);
        }

        public Dictionary<string, StatusModelBrief> GetItemsForDisplay()
		{
			var result = DbContext.Status.Where(x => !x.IsSystem).AsNoTracking().ToList()
				.ToDictionary(k => k.Id.ToString(), v => new StatusModelBrief()
				{
					Id = v.Id,
					Name = v.Name
				});
			return result;
		}

        public List<Status> GetStatuses(IEnumerable<Guid> statuses, bool readOnly = false)
        {
            if (statuses == null || !statuses.Any())
                return new List<Status>();

            var statusesQuery = DbContext.Status.Where(x => statuses.Contains(x.Id));
            if (readOnly)
                statusesQuery = statusesQuery.AsNoTracking();

            return statusesQuery.ToList();
        }
    }
}