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

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

View File

@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: nodes.h,v 1.131 2002/12/12 20:35:14 tgl Exp $
* $Id: nodes.h,v 1.132 2002/12/13 19:46:00 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -31,12 +31,12 @@ typedef enum NodeTag
* TAGS FOR EXECUTOR NODES (execnodes.h)
*/
T_IndexInfo = 10,
T_ResultRelInfo,
T_TupleTableSlot,
T_ExprContext,
T_ProjectionInfo,
T_JunkFilter,
T_ResultRelInfo,
T_EState,
T_TupleTableSlot,
/*
* TAGS FOR PLAN NODES (plannodes.h)
@ -89,7 +89,6 @@ typedef enum NodeTag
T_HashState,
T_SetOpState,
T_LimitState,
T_SubPlanState,
/*
* TAGS FOR PRIMITIVE NODES (primnodes.h)
@ -122,10 +121,27 @@ typedef enum NodeTag
T_JoinExpr,
T_FromExpr,
/*
* TAGS FOR EXPRESSION STATE NODES (execnodes.h)
*
* These correspond (not always one-for-one) to primitive nodes
* derived from Expr.
*/
T_ExprState = 400,
T_GenericExprState,
T_AggrefExprState,
T_ArrayRefExprState,
T_FuncExprState,
T_BoolExprState,
T_SubPlanExprState,
T_CaseExprState,
T_CaseWhenState,
T_ConstraintTestState,
/*
* TAGS FOR PLANNER NODES (relation.h)
*/
T_RelOptInfo = 400,
T_RelOptInfo = 500,
T_IndexOptInfo,
T_Path,
T_IndexPath,
@ -144,13 +160,13 @@ typedef enum NodeTag
/*
* TAGS FOR MEMORY NODES (memnodes.h)
*/
T_MemoryContext = 500,
T_MemoryContext = 600,
T_AllocSetContext,
/*
* TAGS FOR VALUE NODES (pg_list.h)
*/
T_Value = 600,
T_Value = 650,
T_List,
T_Integer,
T_Float,