nl_tokens: Query for the bounding
pl_tokens: public TileGrid queryForTileGrid ( long zoomLevel ) { String where = buildWhere ( TileTable . COLUMN_ZOOM_LEVEL , zoomLevel ) ; String [ ] whereArgs = buildWhereArgs ( new Object [ ] { zoomLevel } ) ; Integer minX = <mask> ( TileTable . COLUMN_TILE_COLUMN , where , whereArgs ) ; Integer maxX = max ( TileTable . COLUMN_TILE_COLUMN , where , whereArgs ) ; Integer minY = min ( TileTable . COLUMN_TILE_ROW , where , whereArgs ) ; Integer maxY = max ( TileTable . COLUMN_TILE_ROW , where , whereArgs ) ; TileGrid tileGrid = null ; if ( minX != null && maxX != null && minY != null && maxY != null ) { tileGrid = new TileGrid ( minX , minY , maxX , maxY ) ; } return tileGrid ; }