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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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14
src/backend/nodes/outfuncs.c
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@ -5,7 +5,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Header: /cvsroot/pgsql/src/backend/nodes/outfuncs.c,v 1.168 2002/08/19 15:08:46 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/nodes/outfuncs.c,v 1.169 2002/08/26 17:53:58 tgl Exp $
*
* NOTES
* Every (plan) node in POSTGRES has an associated "out" routine which
@ -831,16 +831,18 @@ static void
_outArrayRef(StringInfo str, ArrayRef *node)
{
appendStringInfo(str,
" ARRAYREF :refelemtype %u :refattrlength %d :refelemlength %d ",
node->refelemtype,
" ARRAYREF :refrestype %u :refattrlength %d :refelemlength %d ",
node->refrestype,
node->refattrlength,
node->refelemlength);
appendStringInfo(str, " :refelembyval %c :refupperindex ",
node->refelembyval ? 't' : 'f');
appendStringInfo(str,
":refelembyval %s :refelemalign %c :refupperindexpr ",
booltostr(node->refelembyval),
node->refelemalign);
_outNode(str, node->refupperindexpr);
appendStringInfo(str, " :reflowerindex ");
appendStringInfo(str, " :reflowerindexpr ");
_outNode(str, node->reflowerindexpr);
appendStringInfo(str, " :refexpr ");