cpp-ch/local-engine/Shuffle/NativeWriterInMemory.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 <Formats/NativeWriter.h>
#include <IO/WriteBufferFromString.h>

namespace local_engine
{
class NativeWriterInMemory
{
public:
    NativeWriterInMemory();
    void write(const DB::Block & block);
    std::string & collect() const;

private:
    std::unique_ptr<DB::WriteBufferFromOwnString> write_buffer;
    //lazy init
    std::unique_ptr<DB::NativeWriter> writer;
};
}