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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/include/foreign/fdwapi.h
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@@ -96,5 +96,6 @@ typedef struct FdwRoutine
/* Functions in foreign/foreign.c */
extern FdwRoutine *GetFdwRoutine(Oid fdwhandler);
extern FdwRoutine *GetFdwRoutineByRelId(Oid relid);
extern FdwRoutine *GetFdwRoutineForRelation(Relation relation, bool makecopy);
#endif /* FDWAPI_H */