From 2b7334d4877ba445003f96b0bb7eed4e7078a39b Mon Sep 17 00:00:00 2001
From: Neil Conway <neilc@samurai.com>
Date: Sat, 20 Jan 2007 18:43:35 +0000
Subject: Refactor the index AM API slightly: move currentItemData and
 currentMarkData from IndexScanDesc to the opaque structs for the AMs that
 need this information (currently gist and hash).

Patch from Heikki Linnakangas, fixes by Neil Conway.
---
 src/backend/access/gist/gistget.c | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

(limited to 'src/backend/access/gist/gistget.c')

diff --git a/src/backend/access/gist/gistget.c b/src/backend/access/gist/gistget.c
index f36653babd..f1d2c777c2 100644
--- a/src/backend/access/gist/gistget.c
+++ b/src/backend/access/gist/gistget.c
@@ -8,7 +8,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/access/gist/gistget.c,v 1.63 2007/01/05 22:19:22 momjian Exp $
+ *	  $PostgreSQL: pgsql/src/backend/access/gist/gistget.c,v 1.64 2007/01/20 18:43:35 neilc Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -106,8 +106,8 @@ gistgettuple(PG_FUNCTION_ARGS)
 	 * If we have produced an index tuple in the past and the executor has
 	 * informed us we need to mark it as "killed", do so now.
 	 */
-	if (scan->kill_prior_tuple && ItemPointerIsValid(&(scan->currentItemData)))
-		killtuple(scan->indexRelation, so, &(scan->currentItemData));
+	if (scan->kill_prior_tuple && ItemPointerIsValid(&(so->curpos)))
+		killtuple(scan->indexRelation, so, &(so->curpos));
 
 	/*
 	 * Get the next tuple that matches the search key. If asked to skip killed
@@ -138,7 +138,8 @@ gistgetmulti(PG_FUNCTION_ARGS)
  * tuples. Returns true iff a matching tuple was found.
  */
 static int
-gistnext(IndexScanDesc scan, ScanDirection dir, ItemPointer tids, int maxtids, bool ignore_killed_tuples)
+gistnext(IndexScanDesc scan, ScanDirection dir, ItemPointer tids,
+		 int maxtids, bool ignore_killed_tuples)
 {
 	Page		p;
 	OffsetNumber n;
@@ -151,7 +152,7 @@ gistnext(IndexScanDesc scan, ScanDirection dir, ItemPointer tids, int maxtids, b
 
 	so = (GISTScanOpaque) scan->opaque;
 
-	if (ItemPointerIsValid(&scan->currentItemData) == false)
+	if (ItemPointerIsValid(&so->curpos) == false)
 	{
 		/* Being asked to fetch the first entry, so start at the root */
 		Assert(so->curbuf == InvalidBuffer);
@@ -226,7 +227,7 @@ gistnext(IndexScanDesc scan, ScanDirection dir, ItemPointer tids, int maxtids, b
 		}
 
 		if (!GistPageIsLeaf(p) || resetoffset ||
-			!ItemPointerIsValid(&scan->currentItemData))
+			!ItemPointerIsValid(&so->curpos))
 		{
 			if (ScanDirectionIsBackward(dir))
 				n = PageGetMaxOffsetNumber(p);
@@ -235,7 +236,7 @@ gistnext(IndexScanDesc scan, ScanDirection dir, ItemPointer tids, int maxtids, b
 		}
 		else
 		{
-			n = ItemPointerGetOffsetNumber(&(scan->currentItemData));
+			n = ItemPointerGetOffsetNumber(&(so->curpos));
 
 			if (ScanDirectionIsBackward(dir))
 				n = OffsetNumberPrev(n);
@@ -285,7 +286,7 @@ gistnext(IndexScanDesc scan, ScanDirection dir, ItemPointer tids, int maxtids, b
 				 * we can efficiently resume the index scan later.
 				 */
 
-				ItemPointerSet(&(scan->currentItemData),
+				ItemPointerSet(&(so->curpos),
 							   BufferGetBlockNumber(so->curbuf), n);
 
 				if (!(ignore_killed_tuples && ItemIdDeleted(PageGetItemId(p, n))))
-- 
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