From e4c54efb9aa77ada072c472de6bd5d0cdbf34b6c Mon Sep 17 00:00:00 2001 From: Melanie Plageman Date: Sat, 6 Apr 2024 14:49:45 -0400 Subject: [PATCH v19 14/21] Add table AM callbacks for Bitmap Table Scans Add specialized functions for starting, restarting, and ending a Bitmap Table Scan. --- src/include/access/tableam.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/src/include/access/tableam.h b/src/include/access/tableam.h index b4b7fa13948..15f3db4113a 100644 --- a/src/include/access/tableam.h +++ b/src/include/access/tableam.h @@ -355,6 +355,24 @@ typedef struct TableAmRoutine bool set_params, bool allow_strat, bool allow_sync, bool allow_pagemode); + /* + * Functions to begin, restart, and end a scan of the underlying table of + * a bitmap table scan. + * + * `rel`, `flags`, and `snapshot` serve the same purposes as in the + * standard relation scan_[begin|rescan|end] functions documented above. + */ + TableScanDesc (*scan_begin_bm) (Relation rel, + Snapshot snapshot, + uint32 flags); + + void (*scan_rescan_bm) (TableScanDesc scan); + + /* + * Release resources and deallocate scan. + */ + void (*scan_end_bm) (TableScanDesc scan); + /* * Return next tuple from `scan`, store in slot. */ -- 2.40.1