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Arrange to cache FdwRoutine structs in foreign tables' relcache entries.

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This saves several catalog lookups per reference.  It's not all that
exciting right now, because we'd managed to minimize the number of places
that need to fetch the data; but the upcoming writable-foreign-tables patch
needs this info in a lot more places.
This commit is contained in:
Tom Lane
2013-03-06 23:47:38 -05:00
parent 9795113916
commit 1908abc4a3
8 changed files with 72 additions and 6 deletions
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src/backend/executor/nodeForeignscan.c
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@ -160,7 +160,7 @@ ExecInitForeignScan(ForeignScan *node, EState *estate, int eflags)
/*
* Acquire function pointers from the FDW's handler, and init fdw_state.
*/
fdwroutine = GetFdwRoutineByRelId(RelationGetRelid(currentRelation));
fdwroutine = GetFdwRoutineForRelation(currentRelation, true);
scanstate->fdwroutine = fdwroutine;
scanstate->fdw_state = NULL;