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Remove planner's private fields from Query struct, and put them into

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a new PlannerInfo struct, which is passed around instead of the bare
Query in all the planning code.  This commit is essentially just a
code-beautification exercise, but it does open the door to making
larger changes to the planner data structures without having to muck
with the widely-known Query struct.
This commit is contained in:
Tom Lane
2005-06-05 22:32:58 +00:00
parent 22dbd54047
commit 9ab4d98168
51 changed files with 852 additions and 707 deletions
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19
src/include/optimizer/prep.h
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@@ -7,14 +7,13 @@
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/optimizer/prep.h,v 1.49 2005/03/28 00:58:26 tgl Exp $
* $PostgreSQL: pgsql/src/include/optimizer/prep.h,v 1.50 2005/06/05 22:32:58 tgl Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef PREP_H
#define PREP_H
#include "nodes/parsenodes.h"
#include "nodes/plannodes.h"
#include "nodes/relation.h"
@@ -25,13 +24,13 @@
extern int from_collapse_limit;
extern int join_collapse_limit;
extern Node *pull_up_IN_clauses(Query *parse, Node *node);
extern Node *pull_up_subqueries(Query *parse, Node *jtnode,
extern Node *pull_up_IN_clauses(PlannerInfo *root, Node *node);
extern Node *pull_up_subqueries(PlannerInfo *root, Node *jtnode,
bool below_outer_join);
extern void reduce_outer_joins(Query *parse);
extern Node *simplify_jointree(Query *parse, Node *jtnode);
extern void reduce_outer_joins(PlannerInfo *root);
extern Node *simplify_jointree(PlannerInfo *root, Node *jtnode);
extern Relids get_relids_in_jointree(Node *jtnode);
extern Relids get_relids_for_join(Query *parse, int joinrelid);
extern Relids get_relids_for_join(PlannerInfo *root, int joinrelid);
/*
* prototypes for prepqual.c
@@ -41,16 +40,16 @@ extern Expr *canonicalize_qual(Expr *qual);
/*
* prototypes for preptlist.c
*/
extern List *preprocess_targetlist(Query *parse, List *tlist);
extern List *preprocess_targetlist(PlannerInfo *root, List *tlist);
/*
* prototypes for prepunion.c
*/
extern Plan *plan_set_operations(Query *parse, List **sortClauses);
extern Plan *plan_set_operations(PlannerInfo *root, List **sortClauses);
extern List *find_all_inheritors(Oid parentrel);
extern List *expand_inherited_rtentry(Query *parse, Index rti);
extern List *expand_inherited_rtentry(PlannerInfo *root, Index rti);
extern Node *adjust_inherited_attrs(Node *node,
Index old_rt_index, Oid old_relid,