Examples with JSON io.prestosql.type.JsonType.JSON used on opensource projects

Example 1 with JSON

use of io.prestosql.type.JsonType.JSON in project hetu-core by openlookeng.

the class FormatFunction method valueConverter.

private static BiFunction<ConnectorSession, Block, Object> valueConverter(FunctionAndTypeManager functionAndTypeManager, Type type, int position) {
    if (type.equals(UNKNOWN)) {
        return (session, block) -> null;
    }
    if (type.equals(BOOLEAN)) {
        return (session, block) -> type.getBoolean(block, position);
    }
    if (type.equals(TINYINT) || type.equals(SMALLINT) || type.equals(INTEGER) || type.equals(BIGINT)) {
        return (session, block) -> type.getLong(block, position);
    }
    if (type.equals(REAL)) {
        return (session, block) -> intBitsToFloat(toIntExact(type.getLong(block, position)));
    }
    if (type.equals(DOUBLE)) {
        return (session, block) -> type.getDouble(block, position);
    }
    if (type.equals(DATE)) {
        return (session, block) -> LocalDate.ofEpochDay(type.getLong(block, position));
    }
    if (type.equals(TIMESTAMP_WITH_TIME_ZONE)) {
        return (session, block) -> toZonedDateTime(type.getLong(block, position));
    }
    if (type.equals(TIMESTAMP)) {
        return (session, block) -> toLocalDateTime(type.getLong(block, position));
    }
    if (type.equals(TIME)) {
        return (session, block) -> toLocalTime(session, type.getLong(block, position));
    }
    // TODO: support TIME WITH TIME ZONE by making SqlTimeWithTimeZone implement TemporalAccessor
    if (type.equals(JSON)) {
        FunctionHandle functionHandle = functionAndTypeManager.resolveFunction(Optional.empty(), QualifiedObjectName.valueOf(DEFAULT_NAMESPACE, "json_format"), fromTypes(JSON));
        MethodHandle handle = functionAndTypeManager.getBuiltInScalarFunctionImplementation(functionHandle).getMethodHandle();
        return (session, block) -> convertToString(handle, type.getSlice(block, position));
    }
    if (isShortDecimal(type)) {
        int scale = ((DecimalType) type).getScale();
        return (session, block) -> BigDecimal.valueOf(type.getLong(block, position), scale);
    }
    if (isLongDecimal(type)) {
        int scale = ((DecimalType) type).getScale();
        return (session, block) -> new BigDecimal(decodeUnscaledValue(type.getSlice(block, position)), scale);
    }
    if (isVarcharType(type) || isCharType(type)) {
        return (session, block) -> type.getSlice(block, position).toStringUtf8();
    }
    BiFunction<ConnectorSession, Block, Object> function;
    if (type.getJavaType() == long.class) {
        function = (session, block) -> type.getLong(block, position);
    } else if (type.getJavaType() == double.class) {
        function = (session, block) -> type.getDouble(block, position);
    } else if (type.getJavaType() == boolean.class) {
        function = (session, block) -> type.getBoolean(block, position);
    } else if (type.getJavaType() == Slice.class) {
        function = (session, block) -> type.getSlice(block, position);
    } else {
        function = (session, block) -> type.getObject(block, position);
    }
    MethodHandle handle = castToVarchar(functionAndTypeManager, type);
    if ((handle == null) || (handle.type().parameterCount() != 1)) {
        throw new PrestoException(NOT_SUPPORTED, "Type not supported for formatting: " + type.getDisplayName());
    }
    return (session, block) -> convertToString(handle, function.apply(session, block));
}