// Licensed to the Apache Software Foundation (ASF) under one

// or more contributor license agreements.  See the NOTICE file

// distributed with this work for additional information

// regarding copyright ownership.  The ASF licenses this file

// to you 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

//

//   http://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.

#pragma once

#include <stdint.h>

#include <string>

#include "common/status.h"

namespace doris {

class Block;

class RuntimeState;

// abstract class of the result writer

class ResultWriter {

public:

    ResultWriter() = default;

    virtual ~ResultWriter() = default;

    virtual Status init(RuntimeState* state) = 0;

    virtual Status finish(RuntimeState* state) { return Status::OK(); }

    virtual Status close(Status s = Status::OK()) = 0;

    [[nodiscard]] virtual int64_t get_written_rows() const { return _written_rows; }

    [[nodiscard]] bool output_object_data() const { return _output_object_data; }

    // Write is sync, it will do real IO work.

    virtual Status write(RuntimeState* state, Block& block) = 0;

    void set_output_object_data(bool output_object_data) {

        _output_object_data = output_object_data;

    }

protected:

    int64_t _written_rows = 0; // number of rows written

    bool _output_object_data = false;

};

} // namespace doris