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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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16
src/backend/nodes/readfuncs.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/nodes/readfuncs.c,v 1.128 2002/08/10 20:44:48 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/nodes/readfuncs.c,v 1.129 2002/08/26 17:53:58 tgl Exp $
*
* NOTES
* Most of the read functions for plan nodes are tested. (In fact, they
@ -992,9 +992,9 @@ _readArrayRef(void)
local_node = makeNode(ArrayRef);
token = pg_strtok(&length); /* eat :refelemtype */
token = pg_strtok(&length); /* get refelemtype */
local_node->refelemtype = atooid(token);
token = pg_strtok(&length); /* eat :refrestype */
token = pg_strtok(&length); /* get refrestype */
local_node->refrestype = atooid(token);
token = pg_strtok(&length); /* eat :refattrlength */
token = pg_strtok(&length); /* get refattrlength */
@ -1008,10 +1008,14 @@ _readArrayRef(void)
token = pg_strtok(&length); /* get refelembyval */
local_node->refelembyval = strtobool(token);
token = pg_strtok(&length); /* eat :refupperindex */
token = pg_strtok(&length); /* eat :refelemalign */
token = pg_strtok(&length); /* get refelemalign */
local_node->refelemalign = token[0];
token = pg_strtok(&length); /* eat :refupperindexpr */
local_node->refupperindexpr = nodeRead(true);
token = pg_strtok(&length); /* eat :reflowerindex */
token = pg_strtok(&length); /* eat :reflowerindexpr */
local_node->reflowerindexpr = nodeRead(true);
token = pg_strtok(&length); /* eat :refexpr */