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

Example 6 with Description

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

the class VarbinaryFunctions method toBigEndian32.

@Description("Encode value as a 32-bit 2's complement big endian varbinary")
@ScalarFunction("to_big_endian_32")
@SqlType(StandardTypes.VARBINARY)
public static Slice toBigEndian32(@SqlType(StandardTypes.INTEGER) long value) {
    Slice slice = Slices.allocate(Integer.BYTES);
    slice.setInt(0, Integer.reverseBytes((int) value));
    return slice;
}

Example 7 with Description

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

the class VarbinaryFunctions method spookyHashV2_32.

@Description("Compute SpookyHashV2 32-bit hash")
@ScalarFunction
@SqlType(StandardTypes.VARBINARY)
public static Slice spookyHashV2_32(@SqlType(StandardTypes.VARBINARY) Slice slice) {
    Slice hash = Slices.allocate(Integer.BYTES);
    hash.setInt(0, Integer.reverseBytes(SpookyHashV2.hash32(slice, 0, slice.length(), 0)));
    return hash;
}

Example 8 with Description

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

the class VarbinaryFunctions method toIEEE754Binary32.

@Description("Encode value as a big endian varbinary according to IEEE 754 single-precision floating-point format")
@ScalarFunction("to_ieee754_32")
@SqlType(StandardTypes.VARBINARY)
public static Slice toIEEE754Binary32(@SqlType(StandardTypes.REAL) long value) {
    Slice slice = Slices.allocate(Float.BYTES);
    slice.setInt(0, Integer.reverseBytes((int) value));
    return slice;
}

Example 9 with Description

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

the class VarbinaryFunctions method crc32.

@Description("Compute CRC-32")
@ScalarFunction
@SqlType(StandardTypes.BIGINT)
public static long crc32(@SqlType(StandardTypes.VARBINARY) Slice slice) {
    CRC32 crc32 = new CRC32();
    crc32.update(slice.toByteBuffer());
    return crc32.getValue();
}

Example 10 with Description

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

the class VarbinaryFunctions method reverse.

@Description("Reverse a given varbinary")
@ScalarFunction("reverse")
@SqlType(StandardTypes.VARBINARY)
public static Slice reverse(@SqlType("varbinary") Slice inputSlice) {
    if (inputSlice.length() == 0) {
        return EMPTY_SLICE;
    }
    int length = inputSlice.length();
    Slice reverse = Slices.allocate(length);
    for (int i = 0; i < length; i++) {
        reverse.setByte(i, inputSlice.getByte((length - 1) - i));
    }
    return reverse;
}