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Modify array operations to include array's element type OID in the

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array header, and to compute sizing and alignment of array elements
the same way normal tuple access operations do --- viz, using the
tupmacs.h macros att_addlength and att_align.  This makes the world
safe for arrays of cstrings or intervals, and should make it much
easier to write array-type-polymorphic functions; as examples see
the cleanups of array_out and contrib/array_iterator.  By Joe Conway
and Tom Lane.
This commit is contained in:
Tom Lane
2002-08-26 17:54:02 +00:00
parent 8009c27592
commit 5cabcfccce
38 changed files with 559 additions and 435 deletions
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9
src/backend/utils/adt/timestamp.c
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@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/timestamp.c,v 1.69 2002/08/04 06:44:47 thomas Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/timestamp.c,v 1.70 2002/08/26 17:53:59 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -24,6 +24,7 @@
#include "access/hash.h"
#include "access/xact.h"
#include "catalog/pg_type.h"
#include "miscadmin.h"
#include "utils/array.h"
#include "utils/builtins.h"
@@ -1917,7 +1918,7 @@ interval_accum(PG_FUNCTION_ARGS)
/* We assume the input is array of interval */
deconstruct_array(transarray,
false, 12, 'd',
INTERVALOID, 12, false, 'd',
&transdatums, &ndatums);
if (ndatums != 2)
elog(ERROR, "interval_accum: expected 2-element interval array");
@@ -1943,7 +1944,7 @@ interval_accum(PG_FUNCTION_ARGS)
transdatums[1] = IntervalPGetDatum(&N);
result = construct_array(transdatums, 2,
false, 12, 'd');
INTERVALOID, 12, false, 'd');
PG_RETURN_ARRAYTYPE_P(result);
}
@@ -1959,7 +1960,7 @@ interval_avg(PG_FUNCTION_ARGS)
/* We assume the input is array of interval */
deconstruct_array(transarray,
false, 12, 'd',
INTERVALOID, 12, false, 'd',
&transdatums, &ndatums);
if (ndatums != 2)
elog(ERROR, "interval_avg: expected 2-element interval array");