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

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

View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/nodes/readfuncs.c,v 1.188 2006/04/22 01:25:59 tgl Exp $
* $PostgreSQL: pgsql/src/backend/nodes/readfuncs.c,v 1.189 2006/04/30 18:30:39 tgl Exp $
*
* NOTES
* Path and Plan nodes do not have any readfuncs support, because we
@ -147,9 +147,6 @@ _readQuery(void)
READ_BOOL_FIELD(hasSubLinks);
READ_NODE_FIELD(rtable);
READ_NODE_FIELD(jointree);
READ_NODE_FIELD(rowMarks);
READ_BOOL_FIELD(forUpdate);
READ_BOOL_FIELD(rowNoWait);
READ_NODE_FIELD(targetList);
READ_NODE_FIELD(groupClause);
READ_NODE_FIELD(havingQual);
@ -157,6 +154,7 @@ _readQuery(void)
READ_NODE_FIELD(sortClause);
READ_NODE_FIELD(limitOffset);
READ_NODE_FIELD(limitCount);
READ_NODE_FIELD(rowMarks);
READ_NODE_FIELD(setOperations);
READ_NODE_FIELD(resultRelations);
@ -219,6 +217,21 @@ _readGroupClause(void)
READ_DONE();
}
/*
* _readRowMarkClause
*/
static RowMarkClause *
_readRowMarkClause(void)
{
READ_LOCALS(RowMarkClause);
READ_UINT_FIELD(rti);
READ_BOOL_FIELD(forUpdate);
READ_BOOL_FIELD(noWait);
READ_DONE();
}
/*
* _readSetOperationStmt
*/
@ -934,6 +947,8 @@ parseNodeString(void)
return_value = _readSortClause();
else if (MATCH("GROUPCLAUSE", 11))
return_value = _readGroupClause();
else if (MATCH("ROWMARKCLAUSE", 13))
return_value = _readRowMarkClause();
else if (MATCH("SETOPERATIONSTMT", 16))
return_value = _readSetOperationStmt();
else if (MATCH("ALIAS", 5))