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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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5
src/include/utils/lsyscache.h
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@@ -6,7 +6,7 @@
* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: lsyscache.h,v 1.82 2003/10/04 18:22:59 tgl Exp $
* $Id: lsyscache.h,v 1.83 2003/11/09 21:30:38 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -25,7 +25,8 @@ typedef enum IOFuncSelector
} IOFuncSelector;
extern bool op_in_opclass(Oid opno, Oid opclass);
extern bool op_requires_recheck(Oid opno, Oid opclass);
extern void get_op_opclass_properties(Oid opno, Oid opclass,
int *strategy, bool *recheck);
extern Oid get_opclass_member(Oid opclass, int16 strategy);
extern Oid get_op_hash_function(Oid opno);
extern Oid get_opclass_proc(Oid opclass, int16 procnum);