dictionary_column_view.hpp

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/*
 * SPDX-FileCopyrightText: Copyright (c) 2020-2026, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
 * SPDX-License-Identifier: Apache-2.0
 */
#pragma once
 
#include <cudf/column/column_child_offsets.hpp>
#include <cudf/column/column_view.hpp>
 
namespace CUDF_EXPORT cudf {
class dictionary_column_view : private column_view {
 public:
  dictionary_column_view(column_view const& dictionary_column);
  dictionary_column_view(dictionary_column_view&&)      = default;  
  dictionary_column_view(dictionary_column_view const&) = default;  
  ~dictionary_column_view() override                    = default;
 
  dictionary_column_view& operator=(dictionary_column_view const&) = default;
 
  dictionary_column_view& operator=(dictionary_column_view&&) = default;
 
  static constexpr size_type indices_column_index = cudf::dictionary_indices_column_index;
  static constexpr size_type keys_column_index = cudf::dictionary_keys_column_index;
 
  using column_view::has_nulls;
  using column_view::is_empty;
  using column_view::null_count;
  using column_view::null_mask;
  using column_view::offset;
  using column_view::size;
 
  [[nodiscard]] column_view parent() const noexcept;
 
  [[nodiscard]] column_view indices() const noexcept;
 
  [[nodiscard]] column_view get_indices_annotated() const noexcept;
 
  [[nodiscard]] column_view keys() const noexcept;
 
  [[nodiscard]] data_type keys_type() const noexcept;
 
  [[nodiscard]] size_type keys_size() const noexcept;
};  // end of group
 
namespace dictionary {  // defined here for doxygen output
}
 
}  // namespace CUDF_EXPORT cudf