Files
satellite-provider/SatelliteProvider.DataAccess/Models/TileEntity.cs
T
Oleksandr Bezdieniezhnykh e9d6db077c [AZ-484] Fix multi-source tile reads: drop Dapper enum handler
Two integration-test failures uncovered after the initial commit:

1) GetTilesByRegionAsync outer ORDER BY referenced 'updated_at' but
   the inner DISTINCT ON subquery aliased it to 'UpdatedAt' (Postgres
   folds to 'updatedat'). DISTINCT ON already guarantees one row per
   (latitude, longitude, ...) so the third tiebreak was unreachable;
   removed it.

2) Dapper 2.1.35 silently bypasses SqlMapper.TypeHandler<T> for enum
   types during read deserialization (Dapper issue #259). The
   TileSourceTypeHandler worked for writes but reads fell through to
   Enum.TryParse, which cannot map 'google_maps' to GoogleMaps.

   Pivoted: TileEntity.Source is now a string (the wire value).
   TileSource enum stays as the public producer surface in
   Common.Enums; TileSourceConverter (Common.Enums) provides
   ToWireValue / FromWireValue / IsValidWireValue at the boundary.
   TileSourceTypeHandler deleted; registration removed from
   DapperEnumTypeHandlers.RegisterAll.

   tile-storage.md Inv-5 amended to document the storage choice.
   _docs/LESSONS.md L-001 records the Dapper bypass for future cycles.

Full suite passes (213 unit + integration suite incl. AZ-484
AC-1..AC-5, security SEC-01..SEC-04, AZ-356/362/357).

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-05-11 06:44:34 +03:00

28 lines
1.1 KiB
C#

using SatelliteProvider.Common.Enums;
namespace SatelliteProvider.DataAccess.Models;
public class TileEntity
{
public Guid Id { get; set; }
public int TileZoom { get; set; }
public int TileX { get; set; }
public int TileY { get; set; }
public double Latitude { get; set; }
public double Longitude { get; set; }
public double TileSizeMeters { get; set; }
public int TileSizePixels { get; set; }
public string ImageType { get; set; } = string.Empty;
public string? MapsVersion { get; set; }
public int? Version { get; set; }
public string FilePath { get; set; } = string.Empty;
// AZ-484: stored as the contract wire value (snake_case string). See
// TileSourceConverter for enum<->wire conversion. Cannot use the
// TileSource enum directly because Dapper bypasses TypeHandler<T> for
// enum types during read deserialization (Dapper issue #259).
public string Source { get; set; } = TileSourceConverter.GoogleMapsWireValue;
public DateTime CapturedAt { get; set; }
public DateTime CreatedAt { get; set; }
public DateTime UpdatedAt { get; set; }
}