From ec646dbc65afc8c55118cb3fb75cb6fd18d78dd8 Mon Sep 17 00:00:00 2001 From: Tom Lane Date: Sun, 17 Aug 2003 19:58:06 +0000 Subject: Create a 'type cache' that keeps track of the data needed for any particular datatype by array_eq and array_cmp; use this to solve problems with memory leaks in array indexing support. The parser's equality_oper and ordering_oper routines also use the cache. Change the operator search algorithms to look for appropriate btree or hash index opclasses, instead of assuming operators named '<' or '=' have the right semantics. (ORDER BY ASC/DESC now also look at opclasses, instead of assuming '<' and '>' are the right things.) Add several more index opclasses so that there is no regression in functionality for base datatypes. initdb forced due to catalog additions. --- src/include/parser/parse_oper.h | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'src/include/parser/parse_oper.h') diff --git a/src/include/parser/parse_oper.h b/src/include/parser/parse_oper.h index 1167997706a..130f125eff1 100644 --- a/src/include/parser/parse_oper.h +++ b/src/include/parser/parse_oper.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $Id: parse_oper.h,v 1.32 2003/08/04 02:40:14 momjian Exp $ + * $Id: parse_oper.h,v 1.33 2003/08/17 19:58:06 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -38,15 +38,16 @@ extern Operator compatible_oper(List *op, Oid arg1, Oid arg2, bool noError); /* currently no need for compatible_left_oper/compatible_right_oper */ -/* Routines for identifying "=" and "<" operators for a type */ +/* Routines for identifying "=", "<", ">" operators for a type */ extern Operator equality_oper(Oid argtype, bool noError); extern Operator ordering_oper(Oid argtype, bool noError); +extern Operator reverse_ordering_oper(Oid argtype, bool noError); /* Convenience routines for common calls on the above */ extern Oid compatible_oper_opid(List *op, Oid arg1, Oid arg2, bool noError); extern Oid equality_oper_funcid(Oid argtype); extern Oid ordering_oper_opid(Oid argtype); -extern Oid ordering_oper_funcid(Oid argtype); +extern Oid reverse_ordering_oper_opid(Oid argtype); /* Extract operator OID or underlying-function OID from an Operator tuple */ extern Oid oprid(Operator op); -- cgit v1.2.3