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Do some minor code refactoring in preparation for changing the APIs of

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find_inheritance_children() and find_all_inheritors().  I got annoyed that
these are buried inside the planner but mostly used elsewhere.  So, create
a new file catalog/pg_inherits.c and put them there, along with a couple
of other functions that search pg_inherits.

The code that modifies pg_inherits is (still) in tablecmds.c --- it's
kind of entangled with unrelated code that modifies pg_depend and other
stuff, so pulling it out seemed like a bigger change than I wanted to make
right now.  But this file provides a natural home for it if anyone ever
gets around to that.

This commit just moves code around; it doesn't change anything, except
I succumbed to the temptation to make a couple of trivial optimizations
in typeInheritsFrom().
This commit is contained in:
Tom Lane
2009-05-12 00:56:05 +00:00
parent 6480c143ee
commit 0ada559187
12 changed files with 282 additions and 242 deletions
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4
src/include/optimizer/prep.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/optimizer/prep.h,v 1.65 2009/04/28 21:31:16 tgl Exp $
* $PostgreSQL: pgsql/src/include/optimizer/prep.h,v 1.66 2009/05/12 00:56:05 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -46,8 +46,6 @@ extern List *preprocess_targetlist(PlannerInfo *root, List *tlist);
extern Plan *plan_set_operations(PlannerInfo *root, double tuple_fraction,
List **sortClauses);
extern List *find_all_inheritors(Oid parentrel);
extern void expand_inherited_tables(PlannerInfo *root);
extern Node *adjust_appendrel_attrs(Node *node, AppendRelInfo *appinfo);