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Create a 'type cache' that keeps track of the data needed for any particular

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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.
This commit is contained in:
Tom Lane
2003-08-17 19:58:06 +00:00
parent d89578ccbe
commit ec646dbc65
40 changed files with 968 additions and 495 deletions
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19
src/backend/utils/adt/cash.c
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@ -9,7 +9,7 @@
* workings can be found in the book "Software Solutions in C" by
* Dale Schumacher, Academic Press, ISBN: 0-12-632360-7.
*
* $Header: /cvsroot/pgsql/src/backend/utils/adt/cash.c,v 1.59 2003/07/27 04:53:03 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/cash.c,v 1.60 2003/08/17 19:58:05 tgl Exp $
*/
#include "postgres.h"
@ -342,6 +342,9 @@ cash_send(PG_FUNCTION_ARGS)
PG_RETURN_BYTEA_P(pq_endtypsend(&buf));
}
/*
* Comparison functions
*/
Datum
cash_eq(PG_FUNCTION_ARGS)
@ -397,6 +400,20 @@ cash_ge(PG_FUNCTION_ARGS)
PG_RETURN_BOOL(c1 >= c2);
}
Datum
cash_cmp(PG_FUNCTION_ARGS)
{
Cash c1 = PG_GETARG_CASH(0);
Cash c2 = PG_GETARG_CASH(1);
if (c1 > c2)
PG_RETURN_INT32(1);
else if (c1 == c2)
PG_RETURN_INT32(0);
else
PG_RETURN_INT32(-1);
}
/* cash_pl()
* Add two cash values.