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Provide a function hook to let plug-ins get control around ExecutorRun.

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ITAGAKI Takahiro
This commit is contained in:
Tom Lane
2008-07-18 18:23:47 +00:00
parent 8d7af89016
commit 6cc88f0af5
2 changed files with 31 additions and 2 deletions
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11
src/include/executor/executor.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/executor/executor.h,v 1.147 2008/03/28 00:21:56 tgl Exp $
* $PostgreSQL: pgsql/src/include/executor/executor.h,v 1.148 2008/07/18 18:23:47 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -60,6 +60,13 @@
((*(expr)->evalfunc) (expr, econtext, isNull, isDone))
/* Hook for plugins to get control in ExecutorRun() */
typedef TupleTableSlot *(*ExecutorRun_hook_type) (QueryDesc *queryDesc,
ScanDirection direction,
long count);
extern PGDLLIMPORT ExecutorRun_hook_type ExecutorRun_hook;
/*
* prototypes from functions in execAmi.c
*/
@ -136,6 +143,8 @@ extern HeapTuple ExecRemoveJunk(JunkFilter *junkfilter, TupleTableSlot *slot);
extern void ExecutorStart(QueryDesc *queryDesc, int eflags);
extern TupleTableSlot *ExecutorRun(QueryDesc *queryDesc,
ScanDirection direction, long count);
extern TupleTableSlot *standard_ExecutorRun(QueryDesc *queryDesc,
ScanDirection direction, long count);
extern void ExecutorEnd(QueryDesc *queryDesc);
extern void ExecutorRewind(QueryDesc *queryDesc);
extern void InitResultRelInfo(ResultRelInfo *resultRelInfo,