Horton

Add TupleTableSlotOps.is_current_xact_tuple() method

Alexander Korotkov <akorotkov@postgresql.org>

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Commit: 0997e0af273d80add75bcf5616eee000d0a78397
Author: Alexander Korotkov <akorotkov@postgresql.org>
Date: 2024-03-21T21:00:43Z
Releases: 17.0 
Add TupleTableSlotOps.is_current_xact_tuple() method

This allows us to abstract how/whether table AM uses transaction identifiers.
A custom table AM can use a custom slot, which may not store xmin directly,
but determine the tuple belonging to the current transaction in the other way.

Discussion: https://postgr.es/m/CAPpHfdurb9ycV8udYqM%3Do0sPS66PJ4RCBM1g-bBpvzUfogY0EA%40mail.gmail.com
Reviewed-by: Matthias van de Meent, Mark Dilger, Pavel Borisov
Reviewed-by: Nikita Malakhov, Japin Li

Files

PathChange+/−
src/backend/executor/execTuples.c modified +79 −0
src/backend/utils/adt/ri_triggers.c modified +1 −7
src/include/executor/tuptable.h modified +21 −0

Discussion