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Improve the plan cache invalidation mechanism to make it invalidate plans

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when user-defined functions used in a plan are modified.  Also invalidate
plans when schemas, operators, or operator classes are modified; but for these
cases we just invalidate everything rather than tracking exact dependencies,
since these types of objects seldom change in a production database.

Tom Lane; loosely based on a patch by Martin Pihlak.
This commit is contained in:
Tom Lane
2008-09-09 18:58:09 +00:00
parent c06629c72e
commit ee33b95d9c
18 changed files with 522 additions and 275 deletions
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6
src/include/optimizer/planmain.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/optimizer/planmain.h,v 1.111 2008/08/14 18:48:00 tgl Exp $
* $PostgreSQL: pgsql/src/include/optimizer/planmain.h,v 1.112 2008/09/09 18:58:09 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -106,5 +106,9 @@ extern List *set_returning_clause_references(PlannerGlobal *glob,
extern void fix_opfuncids(Node *node);
extern void set_opfuncid(OpExpr *opexpr);
extern void set_sa_opfuncid(ScalarArrayOpExpr *opexpr);
extern void record_plan_function_dependency(PlannerGlobal *glob, Oid funcid);
extern void extract_query_dependencies(List *queries,
List **relationOids,
List **invalItems);
#endif /* PLANMAIN_H */