be/src/format_v2/table/hive_reader.h

// Licensed to the Apache Software Foundation (ASF) under one
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// to you under the Apache License, Version 2.0 (the
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//
//   http://www.apache.org/licenses/LICENSE-2.0
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#pragma once

#include "common/status.h"
#include "format_v2/table_reader.h"

namespace doris::format::hive {
// now hive self only support mixed with orc/parquet files in table and different partitions.
// But if mixed with orc/parquet files in table and same partition, will failed when read.
// now fe will plan table format for all files dirctly, and BE could not handle mixed files also.
class HiveReader final : public format::TableReader {
public:
    ENABLE_FACTORY_CREATOR(HiveReader);
    ~HiveReader() final = default;

    Status prepare_split(const format::SplitReadOptions& options) override;
    format::TableColumnMappingMode mapping_mode() const override;
    Status annotate_projected_column(const TFileScanSlotInfo& slot_info,
                                     format::ProjectedColumnBuildContext* context,
                                     format::ColumnDefinition* column) const override;
    Status validate_projected_columns(
            const format::ProjectedColumnBuildContext& context) const override;
#ifdef BE_TEST
    Status TEST_annotate_file_schema(std::vector<format::ColumnDefinition>* file_schema) {
        return annotate_file_schema(file_schema);
    }
#endif

protected:
    Status annotate_file_schema(std::vector<format::ColumnDefinition>* file_schema) override;
};

} // namespace doris::format::hive