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Merge Resdom nodes into TargetEntry nodes to simplify code and save a

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few palloc's.  I also chose to eliminate the restype and restypmod fields
entirely, since they are redundant with information stored in the node's
contained expression; re-examining the expression at need seems simpler
and more reliable than trying to keep restype/restypmod up to date.

initdb forced due to change in contents of stored rules.
This commit is contained in:
Tom Lane
2005-04-06 16:34:07 +00:00
parent 0f3748a28c
commit ad161bcc8a
43 changed files with 537 additions and 799 deletions
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16
src/backend/rewrite/rewriteDefine.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/rewrite/rewriteDefine.c,v 1.101 2005/01/27 23:24:05 neilc Exp $
* $PostgreSQL: pgsql/src/backend/rewrite/rewriteDefine.c,v 1.102 2005/04/06 16:34:06 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -22,6 +22,7 @@
#include "commands/view.h"
#include "miscadmin.h"
#include "optimizer/clauses.h"
#include "parser/parse_expr.h"
#include "parser/parse_relation.h"
#include "rewrite/rewriteDefine.h"
#include "rewrite/rewriteManip.h"
@ -290,11 +291,11 @@ DefineQueryRewrite(RuleStmt *stmt)
foreach(tllist, query->targetList)
{
TargetEntry *tle = (TargetEntry *) lfirst(tllist);
Resdom *resdom = tle->resdom;
int32 tletypmod;
Form_pg_attribute attr;
char *attname;
if (resdom->resjunk)
if (tle->resjunk)
continue;
i++;
if (i > event_relation->rd_att->natts)
@ -318,12 +319,12 @@ DefineQueryRewrite(RuleStmt *stmt)
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("cannot convert relation containing dropped columns to view")));
if (strcmp(resdom->resname, attname) != 0)
if (strcmp(tle->resname, attname) != 0)
ereport(ERROR,
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
errmsg("SELECT rule's target entry %d has different column name from \"%s\"", i, attname)));
if (attr->atttypid != resdom->restype)
if (attr->atttypid != exprType((Node *) tle->expr))
ereport(ERROR,
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
errmsg("SELECT rule's target entry %d has different type from column \"%s\"", i, attname)));
@ -335,8 +336,9 @@ DefineQueryRewrite(RuleStmt *stmt)
* length but the select rule's expression will probably have
* typmod = -1.
*/
if (attr->atttypmod != resdom->restypmod &&
attr->atttypmod != -1 && resdom->restypmod != -1)
tletypmod = exprTypmod((Node *) tle->expr);
if (attr->atttypmod != tletypmod &&
attr->atttypmod != -1 && tletypmod != -1)
ereport(ERROR,
(errcode(ERRCODE_INVALID_OBJECT_DEFINITION),
errmsg("SELECT rule's target entry %d has different size from column \"%s\"", i, attname)));