Examples with Description io.trino.spi.function.Description used on opensource projects

Example 91 with Description

use of io.trino.spi.function.Description in project trino by trinodb.

the class BingTileFunctions method bingTilesAround.

@Description("Given a (longitude, latitude) point, returns the surrounding Bing tiles at the specified zoom level")
@ScalarFunction("bing_tiles_around")
@SqlType("array(" + BingTileType.NAME + ")")
public static Block bingTilesAround(@SqlType(StandardTypes.DOUBLE) double latitude, @SqlType(StandardTypes.DOUBLE) double longitude, @SqlType(StandardTypes.INTEGER) long zoomLevel) {
    checkLatitude(latitude, LATITUDE_OUT_OF_RANGE);
    checkLongitude(longitude, LONGITUDE_OUT_OF_RANGE);
    checkZoomLevel(zoomLevel);
    long mapSize = mapSize(toIntExact(zoomLevel));
    long maxTileIndex = (mapSize / TILE_PIXELS) - 1;
    int tileX = longitudeToTileX(longitude, mapSize);
    int tileY = longitudeToTileY(latitude, mapSize);
    BlockBuilder blockBuilder = BIGINT.createBlockBuilder(null, 9);
    for (int i = -1; i <= 1; i++) {
        for (int j = -1; j <= 1; j++) {
            int x = tileX + i;
            int y = tileY + j;
            if (x >= 0 && x <= maxTileIndex && y >= 0 && y <= maxTileIndex) {
                BIGINT.writeLong(blockBuilder, BingTile.fromCoordinates(x, y, toIntExact(zoomLevel)).encode());
            }
        }
    }
    return blockBuilder.build();
}

Example 92 with Description

use of io.trino.spi.function.Description in project trino by trinodb.

the class TeradataStringFunctions method char2HexInt.

@Description("Returns the hexadecimal representation of the UTF-16BE encoding of the argument")
@ScalarFunction("char2hexint")
@SqlType(StandardTypes.VARCHAR)
public static Slice char2HexInt(@SqlType(StandardTypes.VARCHAR) Slice string) {
    Slice utf16 = Slices.wrappedBuffer(UTF_16BE.encode(string.toStringUtf8()));
    String encoded = BaseEncoding.base16().encode(utf16.getBytes());
    return Slices.utf8Slice(encoded);
}