gistfile1.txt

public class HousesMinMaxIndex : AbstractIndexCreationTask<House, HousesMinMaxIndex.Result>
    {
        public HousesMinMaxIndex()
        {
            Map = houses => from house in houses
                            select new
                            {
                                HouseType = house.HouseType,
                                MinPrice = house.Price,
                                MaxPrice = house.Price,
                                MinSquareMeters = house.SquareMeters,
                                MaxSquareMeters = house.SquareMeters,
                                MinFloors = house.Floors,
                                MaxFloors = house.Floors,
                                MinRooms = house.Rooms,
                                MaxRooms = house.Rooms,
                                MinBuildTime = house.BuildTime,
                                MaxBuildTime = house.BuildTime
                            };

            Reduce = results => from result in results
                                group result by result.HouseType
                                into p
                                select new
                                {
                                    HouseType = p.Key,                                    
                                    MinPrice = p.Min(x => x.MinPrice),
                                    MaxPrice = p.Max(x => x.MaxPrice),
                                    MinSquareMeters = p.Min(x => x.MinSquareMeters),
                                    MaxSquareMeters = p.Max(x => x.MaxSquareMeters),
                                    MinFloors = p.Min(x => x.MinFloors),
                                    MaxFloors = p.Max(x => x.MaxFloors),
                                    MinRooms = p.Min(x => x.MinRooms),
                                    MaxRooms = p.Max(x => x.MaxRooms),
                                    MinBuildTime = p.Min(x => x.MinBuildTime),
                                    MaxBuildTime = p.Max(x => x.MaxBuildTime)
                                };
        }
        
        public class Result
        {
            public House.HouseTypes HouseType { get; set; }
            public int MinPrice { get; set; }
            public int MaxPrice { get; set; }
            public int MinSquareMeters { get; set; }
            public int MaxSquareMeters { get; set; }
            public int MinFloors { get; set; }
            public int MaxFloors { get; set; }
            public int MinRooms { get; set; }
            public int MaxRooms { get; set; }
            public int MinBuildTime { get; set; }
            public int MaxBuildTime { get; set; }
        }
    }