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Phase 2 of read-only-plans project: restructure expression-tree nodes

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so that all executable expression nodes inherit from a common supertype
Expr.  This is somewhat of an exercise in code purity rather than any
real functional advance, but getting rid of the extra Oper or Func node
formerly used in each operator or function call should provide at least
a little space and speed improvement.
initdb forced by changes in stored-rules representation.
This commit is contained in:
Tom Lane
2002-12-12 15:49:42 +00:00
parent debb072886
commit a0bf885f9e
69 changed files with 3390 additions and 3433 deletions
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31
src/backend/commands/explain.c
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@ -5,7 +5,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994-5, Regents of the University of California
*
* $Header: /cvsroot/pgsql/src/backend/commands/explain.c,v 1.95 2002/12/06 19:28:03 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/explain.c,v 1.96 2002/12/12 15:49:24 tgl Exp $
*
*/
@ -417,20 +417,27 @@ explain_outNode(StringInfo str,
{
RangeTblEntry *rte = rt_fetch(((Scan *) plan)->scanrelid,
es->rtable);
Expr *expr;
Func *funcnode;
Oid funcid;
char *proname;
/* Assert it's on a RangeFunction */
Assert(rte->rtekind == RTE_FUNCTION);
expr = (Expr *) rte->funcexpr;
funcnode = (Func *) expr->oper;
funcid = funcnode->funcid;
/*
* If the expression is still a function call, we can get
* the real name of the function. Otherwise, punt (this
* can happen if the optimizer simplified away the function
* call, for example).
*/
if (rte->funcexpr && IsA(rte->funcexpr, FuncExpr))
{
FuncExpr *funcexpr = (FuncExpr *) rte->funcexpr;
Oid funcid = funcexpr->funcid;
/* We only show the func name, not schema name */
proname = get_func_name(funcid);
/* We only show the func name, not schema name */
proname = get_func_name(funcid);
}
else
proname = rte->eref->aliasname;
appendStringInfo(str, " on %s",
quote_identifier(proname));
@ -583,7 +590,7 @@ explain_outNode(StringInfo str,
appendStringInfo(str, " InitPlan\n");
foreach(lst, plan->initPlan)
{
SubPlan *subplan = (SubPlan *) lfirst(lst);
SubPlanExpr *subplan = (SubPlanExpr *) lfirst(lst);
SubPlanState *subplanstate = (SubPlanState *) lfirst(pslist);
es->rtable = subplan->rtable;
@ -683,7 +690,7 @@ explain_outNode(StringInfo str,
foreach(lst, planstate->subPlan)
{
SubPlanState *sps = (SubPlanState *) lfirst(lst);
SubPlan *sp = (SubPlan *) sps->ps.plan;
SubPlanExpr *sp = (SubPlanExpr *) sps->ps.plan;
es->rtable = sp->rtable;
for (i = 0; i < indent; i++)
@ -870,7 +877,7 @@ show_sort_keys(List *tlist, int nkeys, const char *qlabel,
if (target->resdom->reskey == keyno)
{
/* Deparse the expression, showing any top-level cast */
exprstr = deparse_expression(target->expr, context,
exprstr = deparse_expression((Node *) target->expr, context,
useprefix, true);
/* And add to str */
if (keyno > 1)