be/src/pipeline/exec/assert_num_rows_operator.h

// 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 "operator.h"

namespace doris::pipeline {
#include "common/compile_check_begin.h"

class AssertNumRowsLocalState final : public PipelineXLocalState<FakeSharedState> {
public:
    ENABLE_FACTORY_CREATOR(AssertNumRowsLocalState);

    AssertNumRowsLocalState(RuntimeState* state, OperatorXBase* parent)
            : PipelineXLocalState<FakeSharedState>(state, parent) {}
    ~AssertNumRowsLocalState() = default;

private:
    friend class AssertNumRowsOperatorX;
};

class AssertNumRowsOperatorX final : public StreamingOperatorX<AssertNumRowsLocalState> {
public:
    AssertNumRowsOperatorX(ObjectPool* pool, const TPlanNode& tnode, int operator_id,
                           const DescriptorTbl& descs);

#ifdef BE_TEST
    AssertNumRowsOperatorX() = default;
#endif

    Status pull(RuntimeState* state, vectorized::Block* block, bool* eos) override;

    [[nodiscard]] bool is_source() const override { return false; }

    DataDistribution required_data_distribution(RuntimeState* /*state*/) const override {
        return {ExchangeType::PASSTHROUGH};
    }

private:
    friend class AssertNumRowsLocalState;

    int64_t _desired_num_rows;
    const std::string _subquery_string;
    TAssertion::type _assertion;
    bool _should_convert_output_to_nullable;
};

#include "common/compile_check_end.h"
} // namespace doris::pipeline