56 lines
1.2 KiB
C++
56 lines
1.2 KiB
C++
#ifndef PARQUET_CURSOR_H
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#define PARQUET_CURSOR_H
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#include "parquet_table.h"
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#include "parquet/api/reader.h"
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class ParquetCursor {
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ParquetTable* table;
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std::unique_ptr<parquet::ParquetFileReader> reader;
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std::unique_ptr<parquet::RowGroupMetaData> rowGroupMetadata;
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std::shared_ptr<parquet::RowGroupReader> rowGroup;
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std::vector<std::shared_ptr<parquet::Scanner>> scanners;
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std::vector<parquet::Type::type> types;
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std::vector<int> colRows;
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std::vector<bool> colNulls;
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std::vector<uintptr_t> colIntValues;
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std::vector<double> colDoubleValues;
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std::vector<parquet::ByteArray> colByteArrayValues;
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int rowId;
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int rowGroupId;
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int numRows;
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int numRowGroups;
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int rowsLeftInRowGroup;
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void nextRowGroup();
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public:
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ParquetCursor(ParquetTable* table);
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int getRowId();
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void next();
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bool eof();
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void ensureColumn(int col);
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bool isNull(int col);
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parquet::Type::type getPhysicalType(int col);
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int getInt32(int col);
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long getInt64(int col);
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double getDouble(int col);
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parquet::ByteArray* getByteArray(int col);
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/*
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sqlite3_result_double()
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sqlite3_result_int()
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sqlite3_result_int64()
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sqlite3_result_null()
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sqlite3_result_text()
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*/
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};
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#endif
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