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File indexing completed on 2025-08-28 08:26:58

 // 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.
 
 // This API is EXPERIMENTAL.
 
 #pragma once
 
 #include <memory>
 #include <vector>
 
 #include "arrow/compute/type_fwd.h"  // IWYU pragma: export
 #include "arrow/dataset/visibility.h"
 #include "arrow/filesystem/type_fwd.h"  // IWYU pragma: export
 #include "arrow/type_fwd.h"             // IWYU pragma: export
 
 namespace arrow {
 namespace dataset {
 
 class Dataset;
 class DatasetFactory;
 using DatasetVector = std::vector<std::shared_ptr<Dataset>>;
 
 class UnionDataset;
 class UnionDatasetFactory;
 
 class Fragment;
 using FragmentIterator = Iterator<std::shared_ptr<Fragment>>;
 using FragmentVector = std::vector<std::shared_ptr<Fragment>>;
 
 class FragmentScanOptions;
 
 class FileSource;
 class FileFormat;
 class FileFragment;
 class FileWriter;
 class FileWriteOptions;
 class FileSystemDataset;
 class FileSystemDatasetFactory;
 struct FileSystemDatasetWriteOptions;
 class WriteNodeOptions;
 
 /// \brief Controls what happens if files exist in an output directory during a dataset
 /// write
 enum class ExistingDataBehavior : int8_t {
   /// Deletes all files in a directory the first time that directory is encountered
   kDeleteMatchingPartitions,
   /// Ignores existing files, overwriting any that happen to have the same name as an
   /// output file
   kOverwriteOrIgnore,
   /// Returns an error if there are any files or subdirectories in the output directory
   kError,
 };
 
 class InMemoryDataset;
 
 class CsvFileFormat;
 class CsvFileWriter;
 class CsvFileWriteOptions;
 struct CsvFragmentScanOptions;
 
 class JsonFileFormat;
 class JsonFileWriter;
 class JsonFileWriteOptions;
 struct JsonFragmentScanOptions;
 
 class IpcFileFormat;
 class IpcFileWriter;
 class IpcFileWriteOptions;
 class IpcFragmentScanOptions;
 
 class ParquetFileFormat;
 class ParquetFileFragment;
 class ParquetFragmentScanOptions;
 class ParquetFileWriter;
 class ParquetFileWriteOptions;
 
 class Partitioning;
 class PartitioningFactory;
 class PartitioningOrFactory;
 struct KeyValuePartitioningOptions;
 class DirectoryPartitioning;
 class HivePartitioning;
 struct HivePartitioningOptions;
 class FilenamePartitioning;
 struct FilenamePartitioningOptions;
 
 class ScanNodeOptions;
 struct ScanOptions;
 
 class Scanner;
 
 class ScannerBuilder;
 
 class ScanTask;
 using ScanTaskVector = std::vector<std::shared_ptr<ScanTask>>;
 using ScanTaskIterator = Iterator<std::shared_ptr<ScanTask>>;
 
 }  // namespace dataset
 }  // namespace arrow

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