Method makeLessThanFilter

bolt/expression/ExprToSubfieldFilter.cpp:332–361

static

// static
std::unique_ptr<common::Filter> ExprToSubfieldFilterParser::makeLessThanFilter(
    const core::TypedExprPtr& upperExpr,
    core::ExpressionEvaluator* evaluator) {
  auto upper = toConstant(upperExpr, evaluator);
  if (!upper) {
    return nullptr;
  }
  switch (upper->typeKind()) {
    case TypeKind::TINYINT:
      return lessThan(singleValue<int8_t>(upper));
    case TypeKind::SMALLINT:
      return lessThan(singleValue<int16_t>(upper));
    case TypeKind::INTEGER:
      return lessThan(singleValue<int32_t>(upper));
    case TypeKind::BIGINT:
      return lessThan(singleValue<int64_t>(upper));
    case TypeKind::HUGEINT:
      return lessThanHugeint(singleValue<int128_t>(upper));
    case TypeKind::DOUBLE:
      return lessThanDouble(singleValue<double>(upper));
    case TypeKind::REAL:
      return lessThanFloat(singleValue<float>(upper));
    case TypeKind::VARCHAR:
      return lessThan(std::string(singleValue<StringView>(upper)));
    case TypeKind::TIMESTAMP:
      return lessThan(singleValue<Timestamp>(upper));
    default:
      return nullptr;
  }
}

// static
std::unique_ptr<common::Filter>