/// <summary>
/// Returns the tile data, otherwise null
/// </summary>
/// <param name="tileId">Canonical tile id to identify the tile</param>
/// <returns>tile data as byte[], if tile is not cached returns null</returns>
public byte[] GetTile(CanonicalTileId tileId)
{
tiles tile = _sqlite
.Table <tiles>()
.Where(t => t.zoom_level == tileId.Z && t.tile_column == tileId.X && t.tile_row == tileId.Y)
.FirstOrDefault();
if (null == tile)
{
return(null);
}
return(tile.tile_data);
}
/// <summary>
/// Returns the tile data, otherwise null
/// </summary>
/// <param name="tileId">Canonical tile id to identify the tile</param>
/// <returns>tile data as byte[], if tile is not cached returns null</returns>
public CacheItem GetTile(CanonicalTileId tileId)
{
#if MAPBOX_DEBUG_CACHE
string methodName = _className + "." + new System.Diagnostics.StackFrame().GetMethod().Name;
Debug.LogFormat("{0} {1} {2}", methodName, _tileset, tileId);
#endif
tiles tile = null;
try
{
tile = _sqlite
.Table <tiles>()
.Where(t => t.zoom_level == tileId.Z && t.tile_column == tileId.X && t.tile_row == tileId.Y)
.FirstOrDefault();
}
catch (Exception ex)
{
Debug.LogErrorFormat("error getting tile {1} {2} from cache{0}{3}", Environment.NewLine, _tileset, tileId, ex);
return(null);
}
if (null == tile)
{
return(null);
}
DateTime?lastModified = null;
if (tile.lastmodified.HasValue)
{
lastModified = UnixTimestampUtils.From((double)tile.lastmodified.Value);
}
return(new CacheItem()
{
Data = tile.tile_data,
AddedToCacheTicksUtc = tile.timestamp,
ETag = tile.etag,
LastModified = lastModified
});
}
