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Phase 1 of read-only-plans project: cause executor state nodes to point

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to plan nodes, not vice-versa.  All executor state nodes now inherit from
struct PlanState.  Copying of plan trees has been simplified by not
storing a list of SubPlans in Plan nodes (eliminating duplicate links).
The executor still needs such a list, but it can build it during
ExecutorStart since it has to scan the plan tree anyway.
No initdb forced since no stored-on-disk structures changed, but you
will need a full recompile because of node-numbering changes.
This commit is contained in:
Tom Lane
2002-12-05 15:50:39 +00:00
parent 0f3b83edfa
commit 1fd0c59e25
71 changed files with 3032 additions and 3758 deletions
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12
src/include/executor/nodeGroup.h
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@@ -7,20 +7,20 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: nodeGroup.h,v 1.22 2002/06/20 20:29:49 momjian Exp $
* $Id: nodeGroup.h,v 1.23 2002/12/05 15:50:37 tgl Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef NODEGROUP_H
#define NODEGROUP_H
#include "nodes/plannodes.h"
#include "nodes/execnodes.h"
extern TupleTableSlot *ExecGroup(Group *node);
extern bool ExecInitGroup(Group *node, EState *estate, Plan *parent);
extern int ExecCountSlotsGroup(Group *node);
extern void ExecEndGroup(Group *node);
extern void ExecReScanGroup(Group *node, ExprContext *exprCtxt, Plan *parent);
extern GroupState *ExecInitGroup(Group *node, EState *estate);
extern TupleTableSlot *ExecGroup(GroupState *node);
extern void ExecEndGroup(GroupState *node);
extern void ExecReScanGroup(GroupState *node, ExprContext *exprCtxt);
extern bool execTuplesMatch(HeapTuple tuple1,
HeapTuple tuple2,