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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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14
src/include/nodes/primnodes.h
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@@ -10,7 +10,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: primnodes.h,v 1.73 2002/12/12 20:35:16 tgl Exp $
* $Id: primnodes.h,v 1.74 2002/12/13 19:46:00 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -20,9 +20,6 @@
#include "access/attnum.h"
#include "nodes/pg_list.h"
/* FunctionCache is declared in utils/fcache.h */
typedef struct FunctionCache *FunctionCachePtr;
/* ----------------------------------------------------------------
* node definitions
@@ -221,9 +218,6 @@ typedef struct Aggref
Expr *target; /* expression we are aggregating on */
bool aggstar; /* TRUE if argument was really '*' */
bool aggdistinct; /* TRUE if it's agg(DISTINCT ...) */
/* XXX this should move to AggrefExprState: */
int aggno; /* workspace for executor (see nodeAgg.c) */
} Aggref;
/* ----------------
@@ -307,8 +301,6 @@ typedef struct FuncExpr
bool funcretset; /* true if function returns set */
CoercionForm funcformat; /* how to display this function call */
List *args; /* arguments to the function */
FunctionCachePtr func_fcache; /* XXX runtime state, or NULL */
} FuncExpr;
/*
@@ -328,8 +320,6 @@ typedef struct OpExpr
Oid opresulttype; /* PG_TYPE OID of result value */
bool opretset; /* true if operator returns set */
List *args; /* arguments to the operator (1 or 2) */
FunctionCachePtr op_fcache; /* XXX runtime state, else NULL */
} OpExpr;
/*
@@ -463,8 +453,6 @@ typedef struct SubPlanExpr
SubLink *sublink; /* SubLink node from parser; holds info
* about what to do with subselect's
* results */
struct SubPlanState *pstate; /* XXX TEMPORARY HACK */
} SubPlanExpr;
/* ----------------