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* Add support NULL to GiST.

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* some refactoring and simplify code int gistutil.c and gist.c
* now in some cases it can be called used-defined
  picksplit method for non-first column in index, but here
	is a place to do more.
* small fix of docs related to support NULL.
This commit is contained in:
Teodor Sigaev
2006-05-24 11:01:39 +00:00
parent 86722057fd
commit d2158b0281
8 changed files with 375 additions and 430 deletions
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25
src/include/access/gist_private.h
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/access/gist_private.h,v 1.15 2006/05/19 16:15:17 teodor Exp $
* $PostgreSQL: pgsql/src/include/access/gist_private.h,v 1.16 2006/05/24 11:01:39 teodor Exp $
*
*-------------------------------------------------------------------------
*/
@ -206,17 +206,6 @@ typedef struct
/* root page of a gist index */
#define GIST_ROOT_BLKNO 0
/*
* When we update a relation on which we're doing a scan, we need to
* check the scan and fix it if the update affected any of the pages
* it touches. Otherwise, we can miss records that we should see.
* The only times we need to do this are for deletions and splits. See
* the code in gistscan.c for how the scan is fixed. These two
* constants tell us what sort of operation changed the index.
*/
#define GISTOP_DEL 0
/* #define GISTOP_SPLIT 1 */
#define ATTSIZE(datum, tupdesc, i, isnull) \
( \
(isnull) ? 0 : \
@ -291,12 +280,6 @@ extern IndexTuple gistgetadjusted(Relation r,
IndexTuple oldtup,
IndexTuple addtup,
GISTSTATE *giststate);
extern int gistfindgroup(GISTSTATE *giststate,
GISTENTRY *valvec, GIST_SPLITVEC *spl);
extern void gistadjsubkey(Relation r,
IndexTuple *itup, int len,
GIST_SPLITVEC *v,
GISTSTATE *giststate);
extern IndexTuple gistFormTuple(GISTSTATE *giststate,
Relation r, Datum *attdata, int *datumsize, bool *isnull);
@ -321,13 +304,15 @@ typedef struct {
} GistSplitVec;
extern void gistunionsubkeyvec(GISTSTATE *giststate,
IndexTuple *itvec, GistSplitVec *gsvp, bool isall);
IndexTuple *itvec, GistSplitVec *gsvp, int startkey);
extern void gistunionsubkey(GISTSTATE *giststate, IndexTuple *itvec,
GIST_SPLITVEC *spl, int attno);
extern void GISTInitBuffer(Buffer b, uint32 f);
extern void gistdentryinit(GISTSTATE *giststate, int nkey, GISTENTRY *e,
Datum k, Relation r, Page pg, OffsetNumber o,
int b, bool l, bool isNull);
void gistUserPicksplit(Relation r, GistEntryVector *entryvec, GIST_SPLITVEC *v,
void gistUserPicksplit(Relation r, GistEntryVector *entryvec, int attno, GIST_SPLITVEC *v,
IndexTuple *itup, int len, GISTSTATE *giststate);
/* gistvacuum.c */