Make use of new list primitives list_append_unique and list_concat_unique
authorTom Lane
Thu, 28 Jul 2005 22:27:02 +0000 (22:27 +0000)
committerTom Lane
Thu, 28 Jul 2005 22:27:02 +0000 (22:27 +0000)
where applicable.

src/backend/optimizer/path/joinrels.c
src/backend/optimizer/path/pathkeys.c
src/backend/optimizer/prep/prepunion.c
src/backend/optimizer/util/relnode.c
src/backend/parser/analyze.c
src/backend/rewrite/rewriteHandler.c
src/backend/utils/adt/acl.c
src/backend/utils/init/flatfiles.c

index f51e492eca12bede6f1b124a37cb739adf131fd1..f4f2d779b0a3587c749ec4e1bfeb6ca1352233a4 100644 (file)
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *   $PostgreSQL: pgsql/src/backend/optimizer/path/joinrels.c,v 1.74 2005/06/09 04:18:59 tgl Exp $
+ *   $PostgreSQL: pgsql/src/backend/optimizer/path/joinrels.c,v 1.75 2005/07/28 22:27:00 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -44,7 +44,6 @@ make_rels_by_joins(PlannerInfo *root, int level, List **joinrels)
 {
    List       *result_rels = NIL;
    List       *new_rels;
-   ListCell   *nr;
    ListCell   *r;
    int         k;
 
@@ -121,13 +120,7 @@ make_rels_by_joins(PlannerInfo *root, int level, List **joinrels)
         * for subsequent passes, do not enter the same RelOptInfo into
         * our output list multiple times.
         */
-       foreach(nr, new_rels)
-       {
-           RelOptInfo *jrel = (RelOptInfo *) lfirst(nr);
-
-           if (!list_member_ptr(result_rels, jrel))
-               result_rels = lcons(jrel, result_rels);
-       }
+       result_rels = list_concat_unique_ptr(result_rels, new_rels);
    }
 
    /*
@@ -182,8 +175,9 @@ make_rels_by_joins(PlannerInfo *root, int level, List **joinrels)
                        jrel = make_join_rel(root, old_rel, new_rel,
                                             JOIN_INNER);
                        /* Avoid making duplicate entries ... */
-                       if (jrel && !list_member_ptr(result_rels, jrel))
-                           result_rels = lcons(jrel, result_rels);
+                       if (jrel)
+                           result_rels = list_append_unique_ptr(result_rels,
+                                                                jrel);
                    }
                }
            }
@@ -224,13 +218,7 @@ make_rels_by_joins(PlannerInfo *root, int level, List **joinrels)
                                                     old_rel,
                                                     other_rels);
 
-           foreach(nr, new_rels)
-           {
-               RelOptInfo *jrel = (RelOptInfo *) lfirst(nr);
-
-               if (!list_member_ptr(result_rels, jrel))
-                   result_rels = lcons(jrel, result_rels);
-           }
+           result_rels = list_concat_unique_ptr(result_rels, new_rels);
        }
 
        /*----------
index 26ccfd9297edc313e024f5b9594091b16719e8ee..3e4bcffe2e85ab6062ae4856de5e001ad0fa04ad 100644 (file)
@@ -11,7 +11,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *   $PostgreSQL: pgsql/src/backend/optimizer/path/pathkeys.c,v 1.70 2005/07/03 18:26:32 tgl Exp $
+ *   $PostgreSQL: pgsql/src/backend/optimizer/path/pathkeys.c,v 1.71 2005/07/28 22:27:00 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -163,7 +163,7 @@ add_equijoined_keys(PlannerInfo *root, RestrictInfo *restrictinfo)
                newset = list_make2(item1, item2);
 
            /* Found a set to merge into our new set */
-           newset = list_union(newset, curset);
+           newset = list_concat_unique(newset, curset);
 
            /*
             * Remove old set from equi_key_list.
@@ -714,8 +714,7 @@ canonicalize_pathkeys(PlannerInfo *root, List *pathkeys)
         * canonicalized the keys, so that equivalent-key knowledge is
         * used when deciding if an item is redundant.
         */
-       if (!list_member_ptr(new_pathkeys, cpathkey))
-           new_pathkeys = lappend(new_pathkeys, cpathkey);
+       new_pathkeys = list_append_unique_ptr(new_pathkeys, cpathkey);
    }
    return new_pathkeys;
 }
@@ -1024,8 +1023,7 @@ build_index_pathkeys(PlannerInfo *root,
         * Eliminate redundant ordering info; could happen if query is
         * such that index keys are equijoined...
         */
-       if (!list_member_ptr(retval, cpathkey))
-           retval = lappend(retval, cpathkey);
+       retval = list_append_unique_ptr(retval, cpathkey);
 
        indexkeys++;
        ordering++;
@@ -1467,8 +1465,7 @@ make_pathkeys_for_mergeclauses(PlannerInfo *root,
         * pathkey, a simple ptrMember test is sufficient to detect
         * redundant keys.
         */
-       if (!list_member_ptr(pathkeys, pathkey))
-           pathkeys = lappend(pathkeys, pathkey);
+       pathkeys = list_append_unique_ptr(pathkeys, pathkey);
    }
 
    return pathkeys;
index 1fedd9791cada261d3ef12a433f75ba29ffed60b..0521956235e329236d4bb26e532547872022dfb9 100644 (file)
@@ -14,7 +14,7 @@
  *
  *
  * IDENTIFICATION
- *   $PostgreSQL: pgsql/src/backend/optimizer/prep/prepunion.c,v 1.124 2005/06/10 02:21:05 tgl Exp $
+ *   $PostgreSQL: pgsql/src/backend/optimizer/prep/prepunion.c,v 1.125 2005/07/28 22:27:00 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -706,21 +706,24 @@ tlist_same_datatypes(List *tlist, List *colTypes, bool junkOK)
 List *
 find_all_inheritors(Oid parentrel)
 {
-   List       *examined_relids = NIL;
-   List       *unexamined_relids = list_make1_oid(parentrel);
+   List       *rels_list;
+   ListCell   *l;
 
-   /*
-    * While the queue of unexamined relids is nonempty, remove the first
-    * element, mark it examined, and find its direct descendants. NB:
-    * cannot use foreach(), since we modify the queue inside loop.
+   /* 
+    * We build a list starting with the given rel and adding all direct and
+    * indirect children.  We can use a single list as both the record of
+    * already-found rels and the agenda of rels yet to be scanned for more
+    * children.  This is a bit tricky but works because the foreach() macro
+    * doesn't fetch the next list element until the bottom of the loop.
     */
-   while (unexamined_relids != NIL)
+   rels_list = list_make1_oid(parentrel);
+
+   foreach(l, rels_list)
    {
-       Oid         currentrel = linitial_oid(unexamined_relids);
+       Oid         currentrel = lfirst_oid(l);
        List       *currentchildren;
 
-       unexamined_relids = list_delete_first(unexamined_relids);
-       examined_relids = lappend_oid(examined_relids, currentrel);
+       /* Get the direct children of this rel */
        currentchildren = find_inheritance_children(currentrel);
 
        /*
@@ -730,11 +733,10 @@ find_all_inheritors(Oid parentrel)
         * into an infinite loop, though theoretically there can't be any
         * cycles in the inheritance graph anyway.)
         */
-       currentchildren = list_difference_oid(currentchildren, examined_relids);
-       unexamined_relids = list_union_oid(unexamined_relids, currentchildren);
+       rels_list = list_concat_unique_oid(rels_list, currentchildren);
    }
 
-   return examined_relids;
+   return rels_list;
 }
 
 /*
index d66796d5cce0c8012642015f2b8c6fdb5f850cab..e595749c2912ee852e8ab0a763a636ca0a08e9a8 100644 (file)
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *   $PostgreSQL: pgsql/src/backend/optimizer/util/relnode.c,v 1.70 2005/06/09 04:19:00 tgl Exp $
+ *   $PostgreSQL: pgsql/src/backend/optimizer/util/relnode.c,v 1.71 2005/07/28 22:27:00 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -619,8 +619,8 @@ subbuild_joinrel_joinlist(RelOptInfo *joinrel,
             * in, no great harm is done --- they'll be detected by
             * redundant-clause testing when they reach a restriction list.)
             */
-           if (!list_member_ptr(joinrel->joininfo, rinfo))
-               joinrel->joininfo = lappend(joinrel->joininfo, rinfo);
+           joinrel->joininfo = list_append_unique_ptr(joinrel->joininfo,
+                                                      rinfo);
        }
    }
 }
index 1c8fe6cf773012e6f202455fff154afbeeded896..a9211cfe93151dc5c05d7b42ba65a59ab424ec27 100644 (file)
@@ -6,7 +6,7 @@
  * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/backend/parser/analyze.c,v 1.322 2005/06/05 00:38:09 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/parser/analyze.c,v 1.323 2005/07/28 22:27:00 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -2789,8 +2789,8 @@ transformLocking(Query *qry, List *lockedRels, bool forUpdate)
            switch (rte->rtekind)
            {
                case RTE_RELATION:
-                   if (!list_member_int(rowMarks, i))  /* avoid duplicates */
-                       rowMarks = lappend_int(rowMarks, i);
+                   /* use list_append_unique to avoid duplicates */
+                   rowMarks = list_append_unique_int(rowMarks, i);
                    rte->requiredPerms |= ACL_SELECT_FOR_UPDATE;
                    break;
                case RTE_SUBQUERY:
@@ -2826,8 +2826,8 @@ transformLocking(Query *qry, List *lockedRels, bool forUpdate)
                    switch (rte->rtekind)
                    {
                        case RTE_RELATION:
-                           if (!list_member_int(rowMarks, i))  /* avoid duplicates */
-                               rowMarks = lappend_int(rowMarks, i);
+                           /* use list_append_unique to avoid duplicates */
+                           rowMarks = list_append_unique_int(rowMarks, i);
                            rte->requiredPerms |= ACL_SELECT_FOR_UPDATE;
                            break;
                        case RTE_SUBQUERY:
index 3677fd2ebac17312c101e6822ed7cd6a100e3941..428bf7ba44f8d3bdeefa7c4e4b2f94c82c69238a 100644 (file)
@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *   $PostgreSQL: pgsql/src/backend/rewrite/rewriteHandler.c,v 1.155 2005/06/28 05:08:59 tgl Exp $
+ *   $PostgreSQL: pgsql/src/backend/rewrite/rewriteHandler.c,v 1.156 2005/07/28 22:27:02 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -1001,8 +1001,7 @@ markQueryForLocking(Query *qry, bool forUpdate, bool skipOldNew)
 
        if (rte->rtekind == RTE_RELATION)
        {
-           if (!list_member_int(qry->rowMarks, rti))
-               qry->rowMarks = lappend_int(qry->rowMarks, rti);
+           qry->rowMarks = list_append_unique_int(qry->rowMarks, rti);
            rte->requiredPerms |= ACL_SELECT_FOR_UPDATE;
        }
        else if (rte->rtekind == RTE_SUBQUERY)
index 48a24db182635d3b8ef1f7803eae55203172796c..d51162e7eed2a005042a8e37970e301d2df2c6f8 100644 (file)
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *   $PostgreSQL: pgsql/src/backend/utils/adt/acl.c,v 1.122 2005/07/26 16:38:27 tgl Exp $
+ *   $PostgreSQL: pgsql/src/backend/utils/adt/acl.c,v 1.123 2005/07/28 22:27:02 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -2843,8 +2843,7 @@ has_privs_of_role(Oid member, Oid role)
             * graph, we must test for having already seen this role.
             * It is legal for instance to have both A->B and A->C->B.
             */
-           if (!list_member_oid(roles_list, otherid))
-               roles_list = lappend_oid(roles_list, otherid);
+           roles_list = list_append_unique_oid(roles_list, otherid);
        }
        ReleaseSysCacheList(memlist);
    }
@@ -2931,8 +2930,7 @@ is_member_of_role(Oid member, Oid role)
             * graph, we must test for having already seen this role.
             * It is legal for instance to have both A->B and A->C->B.
             */
-           if (!list_member_oid(roles_list, otherid))
-               roles_list = lappend_oid(roles_list, otherid);
+           roles_list = list_append_unique_oid(roles_list, otherid);
        }
        ReleaseSysCacheList(memlist);
    }
@@ -3024,8 +3022,7 @@ is_admin_of_role(Oid member, Oid role)
                break;
            }
 
-           if (!list_member_oid(roles_list, otherid))
-               roles_list = lappend_oid(roles_list, otherid);
+           roles_list = list_append_unique_oid(roles_list, otherid);
        }
        ReleaseSysCacheList(memlist);
        if (result)
index e4b7154b93b283bad3206a741a04f674c303d67f..7087a9887d413a9b76751926eca9e10d7e1e4532 100644 (file)
@@ -23,7 +23,7 @@
  * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/backend/utils/init/flatfiles.c,v 1.12 2005/07/04 04:51:50 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/utils/init/flatfiles.c,v 1.13 2005/07/28 22:27:02 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -571,12 +571,8 @@ write_auth_file(Relation rel_authid, Relation rel_authmem)
                 * Now add all the new roles to roles_list.
                 */
                for (i = first_found; i <= last_found; i++)
-               {
-                   Oid rolid = authmem_info[i].roleid;
-
-                   if (!list_member_oid(roles_list, rolid))
-                       roles_list = lappend_oid(roles_list, rolid);
-               }
+                   roles_list = list_append_unique_oid(roles_list,
+                                                       authmem_info[i].roleid);
            }
 
            /*