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Improve the representation of FOR UPDATE/FOR SHARE so that we can

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support both FOR UPDATE and FOR SHARE in one command, as well as both
NOWAIT and normal WAIT behavior.  The more general code is actually
simpler and cleaner.
This commit is contained in:
Tom Lane
2006-04-30 18:30:40 +00:00
parent 931bfc9664
commit 986085a7f0
29 changed files with 320 additions and 245 deletions
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21
src/backend/nodes/equalfuncs.c
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@@ -18,7 +18,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/nodes/equalfuncs.c,v 1.270 2006/04/22 01:25:59 tgl Exp $
* $PostgreSQL: pgsql/src/backend/nodes/equalfuncs.c,v 1.271 2006/04/30 18:30:38 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -665,9 +665,6 @@ _equalQuery(Query *a, Query *b)
COMPARE_SCALAR_FIELD(hasSubLinks);
COMPARE_NODE_FIELD(rtable);
COMPARE_NODE_FIELD(jointree);
COMPARE_NODE_FIELD(rowMarks);
COMPARE_SCALAR_FIELD(forUpdate);
COMPARE_SCALAR_FIELD(rowNoWait);
COMPARE_NODE_FIELD(targetList);
COMPARE_NODE_FIELD(groupClause);
COMPARE_NODE_FIELD(havingQual);
@@ -675,6 +672,7 @@ _equalQuery(Query *a, Query *b)
COMPARE_NODE_FIELD(sortClause);
COMPARE_NODE_FIELD(limitOffset);
COMPARE_NODE_FIELD(limitCount);
COMPARE_NODE_FIELD(rowMarks);
COMPARE_NODE_FIELD(setOperations);
COMPARE_NODE_FIELD(resultRelations);
@@ -1688,7 +1686,7 @@ _equalLockingClause(LockingClause *a, LockingClause *b)
{
COMPARE_NODE_FIELD(lockedRels);
COMPARE_SCALAR_FIELD(forUpdate);
COMPARE_SCALAR_FIELD(nowait);
COMPARE_SCALAR_FIELD(noWait);
return true;
}
@@ -1723,6 +1721,16 @@ _equalSortClause(SortClause *a, SortClause *b)
return true;
}
static bool
_equalRowMarkClause(RowMarkClause *a, RowMarkClause *b)
{
COMPARE_SCALAR_FIELD(rti);
COMPARE_SCALAR_FIELD(forUpdate);
COMPARE_SCALAR_FIELD(noWait);
return true;
}
static bool
_equalFkConstraint(FkConstraint *a, FkConstraint *b)
{
@@ -2297,6 +2305,9 @@ equal(void *a, void *b)
/* GroupClause is equivalent to SortClause */
retval = _equalSortClause(a, b);
break;
case T_RowMarkClause:
retval = _equalRowMarkClause(a, b);
break;
case T_FkConstraint:
retval = _equalFkConstraint(a, b);
break;