emkornfield commented on code in PR #14964:
URL: https://github.com/apache/arrow/pull/14964#discussion_r1083090112
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cpp/src/parquet/page_index.h:
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@@ -126,4 +132,94 @@ class PARQUET_EXPORT OffsetIndex {
virtual const std::vector<PageLocation>& page_locations() const = 0;
};
+/// \brief Interface for reading the page index for a Parquet row group.
+class PARQUET_EXPORT RowGroupPageIndexReader {
+ public:
+ virtual ~RowGroupPageIndexReader() = default;
+
+ /// \brief Read column index of a column chunk.
+ ///
+ /// \param[in] i column ordinal of the column chunk.
+ /// \returns column index of the column or nullptr if it does not exist.
+ /// \throws ParquetException if the index is out of bound.
+ virtual std::shared_ptr<ColumnIndex> GetColumnIndex(int32_t i) = 0;
+
+ /// \brief Read offset index of a column chunk.
+ ///
+ /// \param[in] i column ordinal of the column chunk.
+ /// \returns offset index of the column or nullptr if it does not exist.
+ /// \throws ParquetException if the index is out of bound.
+ virtual std::shared_ptr<OffsetIndex> GetOffsetIndex(int32_t i) = 0;
+};
+
+struct IndexSelection {
+ /// Specifies whether to read the column index.
+ bool column_index = false;
+ /// Specifies whether to read the offset index.
+ bool offset_index = false;
+};
+
+struct RowGroupIndexReadRange {
Review Comment:
Yes, thank you!
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