// 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 <cstddef>

#include "common/status.h"

#include "core/column/column_struct.h"

#include "core/data_type/data_type.h"

#include "exprs/function/array/function_array_utils.h"

#include "exprs/table_function/table_function.h"

namespace doris {

#include "common/compile_check_begin.h"

class Block;

} // namespace doris

namespace doris {

class VExplodeV2TableFunction : public TableFunction {

    ENABLE_FACTORY_CREATOR(VExplodeV2TableFunction);

public:

    VExplodeV2TableFunction();

    ~VExplodeV2TableFunction() override = default;

    Status process_init(Block* block, RuntimeState* state) override;

    void process_row(size_t row_idx) override;

    void process_close() override;

    void get_same_many_values(MutableColumnPtr& column, int length) override;

    int get_value(MutableColumnPtr& column, int max_step) override;

    void set_generate_row_index(bool generate_row_index) {

        _generate_row_index = generate_row_index;

    }

private:

    Status _process_init_variant(Block* block, int value_column_idx, int children_column_idx);

    std::vector<ColumnPtr> _array_columns;

    size_t _row_idx {0};

    ColumnArrayExecutionDatas _multi_detail;

    std::vector<size_t> _array_offsets;

    // `posexplode` & `posexplode_outer`

    bool _generate_row_index {false};

};

#include "common/compile_check_end.h"

} // namespace doris