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// Copyright(C) 2023 InfiniFlow, Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
export module infinity_core:special_function;
import :function;
import std.compat;
import data_type;
import internal_types;
namespace infinity {
export enum class SpecialType {
kRowID,
kDistance,
kDistanceFactors,
kSimilarity,
kSimilarityFactors,
kScore,
kScoreFactors,
kCreateTs,
kDeleteTs,
kFilterFullText,
};
export class SpecialFunction final : public Function {
public:
SpecialFunction(std::string func_name, DataType data_type, const size_t extra_idx, const SpecialType special_type)
: Function(std::move(func_name), FunctionType::kSpecial), data_type_(std::move(data_type)), special_type_(special_type),
extra_idx_(extra_idx) {}
const DataType &data_type() const { return data_type_; }
size_t extra_idx() const { return extra_idx_; }
SpecialType special_type() const { return special_type_; }
std::string ToString() const override { return name(); }
private:
DataType data_type_;
SpecialType special_type_;
size_t extra_idx_{0};
};
} // namespace infinity