| 1 | //===----------------------------------------------------------------------===// |
|---|---|
| 2 | // DuckDB |
| 3 | // |
| 4 | // duckdb/function/replacement_scan.hpp |
| 5 | // |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | #pragma once |
| 10 | |
| 11 | #include "duckdb/common/common.hpp" |
| 12 | |
| 13 | namespace duckdb { |
| 14 | |
| 15 | class ClientContext; |
| 16 | class TableRef; |
| 17 | |
| 18 | struct ReplacementScanData { |
| 19 | virtual ~ReplacementScanData() { |
| 20 | } |
| 21 | }; |
| 22 | |
| 23 | typedef unique_ptr<TableRef> (*replacement_scan_t)(ClientContext &context, const string &table_name, |
| 24 | ReplacementScanData *data); |
| 25 | |
| 26 | //! Replacement table scans are automatically attempted when a table name cannot be found in the schema |
| 27 | //! This allows you to do e.g. SELECT * FROM 'filename.csv', and automatically convert this into a CSV scan |
| 28 | struct ReplacementScan { |
| 29 | explicit ReplacementScan(replacement_scan_t function, unique_ptr<ReplacementScanData> data_p = nullptr) |
| 30 | : function(function), data(std::move(data_p)) { |
| 31 | } |
| 32 | |
| 33 | replacement_scan_t function; |
| 34 | unique_ptr<ReplacementScanData> data; |
| 35 | }; |
| 36 | |
| 37 | } // namespace duckdb |
| 38 |