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Phase 3 of read-only-plans project: ExecInitExpr now builds expression

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execution state trees, and ExecEvalExpr takes an expression state tree
not an expression plan tree.  The plan tree is now read-only as far as
the executor is concerned.  Next step is to begin actually exploiting
this property.
This commit is contained in:
Tom Lane
2002-12-13 19:46:01 +00:00
parent 77b7a740f9
commit 3a4f7dde16
49 changed files with 993 additions and 815 deletions
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15
src/include/executor/nodeSubplan.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: nodeSubplan.h,v 1.13 2002/12/12 15:49:40 tgl Exp $
* $Id: nodeSubplan.h,v 1.14 2002/12/13 19:45:56 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -16,12 +16,13 @@
#include "nodes/execnodes.h"
extern SubPlanState *ExecInitSubPlan(SubPlanExpr *node, EState *estate);
extern Datum ExecSubPlan(SubPlanState *node, List *pvar, ExprContext *econtext,
bool *isNull);
extern void ExecEndSubPlan(SubPlanState *node);
extern void ExecReScanSetParamPlan(SubPlanState *node, PlanState *parent);
extern void ExecInitSubPlan(SubPlanExprState *sstate, EState *estate);
extern Datum ExecSubPlan(SubPlanExprState *node,
ExprContext *econtext,
bool *isNull);
extern void ExecEndSubPlan(SubPlanExprState *node);
extern void ExecReScanSetParamPlan(SubPlanExprState *node, PlanState *parent);
extern void ExecSetParamPlan(SubPlanState *node, ExprContext *econtext);
extern void ExecSetParamPlan(SubPlanExprState *node, ExprContext *econtext);
#endif /* NODESUBPLAN_H */