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Add operator strategy and comparison-value datatype fields to ScanKey.

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Remove the 'strategy map' code, which was a large amount of mechanism
that no longer had any use except reverse-mapping from procedure OID to
strategy number.  Passing the strategy number to the index AM in the
first place is simpler and faster.
This is a preliminary step in planned support for cross-datatype index
operations.  I'm committing it now since the ScanKeyEntryInitialize()
API change touches quite a lot of files, and I want to commit those
changes before the tree drifts under me.
This commit is contained in:
Tom Lane
2003-11-09 21:30:38 +00:00
parent 723825afeb
commit c1d62bfd00
72 changed files with 950 additions and 2147 deletions
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18
src/include/access/nbtree.h
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: nbtree.h,v 1.71 2003/09/29 23:40:26 tgl Exp $
* $Id: nbtree.h,v 1.72 2003/11/09 21:30:37 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -340,16 +340,10 @@ typedef struct xl_btree_newpage
/*
* Operator strategy numbers -- ordering of these is <, <=, =, >=, >
* Operator strategy numbers for B-tree have been moved to access/skey.h,
* because many places need to use them in ScanKeyEntryInitialize() calls.
*/
#define BTLessStrategyNumber 1
#define BTLessEqualStrategyNumber 2
#define BTEqualStrategyNumber 3
#define BTGreaterEqualStrategyNumber 4
#define BTGreaterStrategyNumber 5
#define BTMaxStrategyNumber 5
/*
* When a new operator class is declared, we require that the user
* supply us with an amproc procedure for determining whether, for
@ -479,12 +473,6 @@ extern bool _bt_first(IndexScanDesc scan, ScanDirection dir);
extern bool _bt_step(IndexScanDesc scan, Buffer *bufP, ScanDirection dir);
extern Buffer _bt_get_endpoint(Relation rel, uint32 level, bool rightmost);
/*
* prototypes for functions in nbtstrat.c
*/
extern StrategyNumber _bt_getstrat(Relation rel, AttrNumber attno,
RegProcedure proc);
/*
* prototypes for functions in nbtutils.c
*/