example/parquet-dump-schema.cc

// Licensed to the Apache Software Foundation (ASF) under one
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// 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
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// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
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#include <iostream>

#include <parquet/api/reader.h>
#include <parquet/api/schema.h>

using namespace parquet;

int main(int argc, char** argv) {
  std::string filename = argv[1];

  try {
    std::unique_ptr<ParquetFileReader> reader = ParquetFileReader::OpenFile(filename);
    PrintSchema(reader->descr()->schema().get(), std::cout);
  } catch (const std::exception& e) {
    std::cerr << "Parquet error: "
              << e.what()
              << std::endl;
    return -1;
  }

  return 0;
}