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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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12
src/backend/nodes/copyfuncs.c
View File

@@ -15,7 +15,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/nodes/copyfuncs.c,v 1.231 2002/12/12 20:35:12 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/nodes/copyfuncs.c,v 1.232 2002/12/13 19:45:56 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -710,7 +710,6 @@ _copyAggref(Aggref *from)
COPY_NODE_FIELD(target);
COPY_SCALAR_FIELD(aggstar);
COPY_SCALAR_FIELD(aggdistinct);
COPY_SCALAR_FIELD(aggno); /* will go away soon */
return newnode;
}
@@ -750,9 +749,6 @@ _copyFuncExpr(FuncExpr *from)
COPY_SCALAR_FIELD(funcformat);
COPY_NODE_FIELD(args);
/* Do not copy the run-time state, if any */
newnode->func_fcache = NULL;
return newnode;
}
@@ -770,9 +766,6 @@ _copyOpExpr(OpExpr *from)
COPY_SCALAR_FIELD(opretset);
COPY_NODE_FIELD(args);
/* Do not copy the run-time state, if any */
newnode->op_fcache = NULL;
return newnode;
}
@@ -790,9 +783,6 @@ _copyDistinctExpr(DistinctExpr *from)
COPY_SCALAR_FIELD(opretset);
COPY_NODE_FIELD(args);
/* Do not copy the run-time state, if any */
newnode->op_fcache = NULL;
return newnode;
}

3
src/backend/nodes/nodeFuncs.c
View File

@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/nodes/nodeFuncs.c,v 1.20 2002/12/12 15:49:28 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/nodes/nodeFuncs.c,v 1.21 2002/12/13 19:45:56 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -88,5 +88,4 @@ set_opfuncid(OpExpr *opexpr)
{
if (opexpr->opfuncid == InvalidOid)
opexpr->opfuncid = get_opcode(opexpr->opno);
opexpr->op_fcache = NULL; /* XXX will go away soon */
}

4
src/backend/nodes/outfuncs.c
View File

@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/nodes/outfuncs.c,v 1.188 2002/12/12 20:35:12 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/nodes/outfuncs.c,v 1.189 2002/12/13 19:45:56 tgl Exp $
*
* NOTES
* Every node type that can appear in stored rules' parsetrees *must*
@@ -214,8 +214,6 @@ _outDatum(StringInfo str, Datum value, int typlen, bool typbyval)
/*
* print the basic stuff of all nodes that inherit from Plan
*
* NOTE: we deliberately omit the execution state (EState)
*/
static void
_outPlanInfo(StringInfo str, Plan *node)

11
src/backend/nodes/readfuncs.c
View File

@@ -8,12 +8,13 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/nodes/readfuncs.c,v 1.142 2002/12/12 20:35:12 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/nodes/readfuncs.c,v 1.143 2002/12/13 19:45:56 tgl Exp $
*
* NOTES
* Path and Plan nodes do not have any readfuncs support, because we
* never have occasion to read them in. (There was once code here that
* claimed to read them, but it was broken as well as unused.)
* claimed to read them, but it was broken as well as unused.) We
* never read executor state trees, either.
*
*-------------------------------------------------------------------------
*/
@@ -439,8 +440,6 @@ _readFuncExpr(void)
READ_ENUM_FIELD(funcformat, CoercionForm);
READ_NODE_FIELD(args);
local_node->func_fcache = NULL;
READ_DONE();
}
@@ -468,8 +467,6 @@ _readOpExpr(void)
READ_BOOL_FIELD(opretset);
READ_NODE_FIELD(args);
local_node->op_fcache = NULL;
READ_DONE();
}
@@ -497,8 +494,6 @@ _readDistinctExpr(void)
READ_BOOL_FIELD(opretset);
READ_NODE_FIELD(args);
local_node->op_fcache = NULL;
READ_DONE();
}