use of io.airlift.slice.InvalidUtf8Exception in project presto by prestodb.
the class StringFunctions method fromUtf8.
@Description("decodes the UTF-8 encoded string")
@ScalarFunction
@LiteralParameters("x")
@SqlType(StandardTypes.VARCHAR)
public static Slice fromUtf8(@SqlType(StandardTypes.VARBINARY) Slice slice, @SqlType("varchar(x)") Slice replacementCharacter) {
int count = countCodePoints(replacementCharacter);
if (count > 1) {
throw new PrestoException(INVALID_FUNCTION_ARGUMENT, "Replacement character string must empty or a single character");
}
OptionalInt replacementCodePoint;
if (count == 1) {
try {
replacementCodePoint = OptionalInt.of(getCodePointAt(replacementCharacter, 0));
} catch (InvalidUtf8Exception e) {
throw new PrestoException(INVALID_FUNCTION_ARGUMENT, "Invalid replacement character");
}
} else {
replacementCodePoint = OptionalInt.empty();
}
return SliceUtf8.fixInvalidUtf8(slice, replacementCodePoint);
}
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