1 files changed, 0 insertions, 281 deletions
diff --git a/src/backend/access/rtree/rtget.c b/src/backend/access/rtree/rtget.c
deleted file mode 100644
index 010a493d20e..00000000000
--- a/src/backend/access/rtree/rtget.c
+++ /dev/null
@@ -1,281 +0,0 @@
-/*-------------------------------------------------------------------------
- *
- * rtget.c
- *	  fetch tuples from an rtree scan.
- *
- * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
- * Portions Copyright (c) 1994, Regents of the University of California
- *
- *
- * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/access/rtree/rtget.c,v 1.37 2005/10/15 02:49:09 momjian Exp $
- *
- *-------------------------------------------------------------------------
- */
-
-#include "postgres.h"
-
-#include "access/iqual.h"
-#include "access/relscan.h"
-#include "access/rtree.h"
-#include "pgstat.h"
-
-
-static OffsetNumber findnext(IndexScanDesc s, OffsetNumber n,
-		 ScanDirection dir);
-static bool rtnext(IndexScanDesc s, ScanDirection dir);
-
-
-Datum
-rtgettuple(PG_FUNCTION_ARGS)
-{
-	IndexScanDesc s = (IndexScanDesc) PG_GETARG_POINTER(0);
-	ScanDirection dir = (ScanDirection) PG_GETARG_INT32(1);
-	RTreeScanOpaque so = (RTreeScanOpaque) s->opaque;
-	Page		page;
-	OffsetNumber offnum;
-
-	/*
-	 * If we've already produced a tuple and the executor has informed us that
-	 * it should be marked "killed", do so now.
-	 */
-	if (s->kill_prior_tuple && ItemPointerIsValid(&(s->currentItemData)))
-	{
-		offnum = ItemPointerGetOffsetNumber(&(s->currentItemData));
-		page = BufferGetPage(so->curbuf);
-		PageGetItemId(page, offnum)->lp_flags |= LP_DELETE;
-		SetBufferCommitInfoNeedsSave(so->curbuf);
-	}
-
-	/*
-	 * Get the next tuple that matches the search key; if asked to skip killed
-	 * tuples, find the first non-killed tuple that matches. Return as soon as
-	 * we've run out of matches or we've found an acceptable match.
-	 */
-	for (;;)
-	{
-		bool		res = rtnext(s, dir);
-
-		if (res && s->ignore_killed_tuples)
-		{
-			offnum = ItemPointerGetOffsetNumber(&(s->currentItemData));
-			page = BufferGetPage(so->curbuf);
-			if (ItemIdDeleted(PageGetItemId(page, offnum)))
-				continue;
-		}
-
-		PG_RETURN_BOOL(res);
-	}
-}
-
-Datum
-rtgetmulti(PG_FUNCTION_ARGS)
-{
-	IndexScanDesc s = (IndexScanDesc) PG_GETARG_POINTER(0);
-	ItemPointer tids = (ItemPointer) PG_GETARG_POINTER(1);
-	int32		max_tids = PG_GETARG_INT32(2);
-	int32	   *returned_tids = (int32 *) PG_GETARG_POINTER(3);
-	RTreeScanOpaque so = (RTreeScanOpaque) s->opaque;
-	bool		res = true;
-	int32		ntids = 0;
-
-	/* XXX generic implementation: loop around guts of rtgettuple */
-	while (ntids < max_tids)
-	{
-		res = rtnext(s, ForwardScanDirection);
-		if (res && s->ignore_killed_tuples)
-		{
-			Page		page;
-			OffsetNumber offnum;
-
-			offnum = ItemPointerGetOffsetNumber(&(s->currentItemData));
-			page = BufferGetPage(so->curbuf);
-			if (ItemIdDeleted(PageGetItemId(page, offnum)))
-				continue;
-		}
-
-		if (!res)
-			break;
-		tids[ntids] = s->xs_ctup.t_self;
-		ntids++;
-	}
-
-	*returned_tids = ntids;
-	PG_RETURN_BOOL(res);
-}
-
-static bool
-rtnext(IndexScanDesc s, ScanDirection dir)
-{
-	Page		p;
-	OffsetNumber n;
-	RTreePageOpaque po;
-	RTreeScanOpaque so;
-
-	so = (RTreeScanOpaque) s->opaque;
-
-	if (!ItemPointerIsValid(&(s->currentItemData)))
-	{
-		/* first call: start at the root */
-		Assert(BufferIsValid(so->curbuf) == false);
-		so->curbuf = ReadBuffer(s->indexRelation, P_ROOT);
-		pgstat_count_index_scan(&s->xs_pgstat_info);
-	}
-
-	p = BufferGetPage(so->curbuf);
-	po = (RTreePageOpaque) PageGetSpecialPointer(p);
-
-	if (!ItemPointerIsValid(&(s->currentItemData)))
-	{
-		/* first call: start at first/last offset */
-		if (ScanDirectionIsForward(dir))
-			n = FirstOffsetNumber;
-		else
-			n = PageGetMaxOffsetNumber(p);
-	}
-	else
-	{
-		/* go on to the next offset */
-		n = ItemPointerGetOffsetNumber(&(s->currentItemData));
-		if (ScanDirectionIsForward(dir))
-			n = OffsetNumberNext(n);
-		else
-			n = OffsetNumberPrev(n);
-	}
-
-	for (;;)
-	{
-		IndexTuple	it;
-		RTSTACK    *stk;
-
-		n = findnext(s, n, dir);
-
-		/* no match on this page, so read in the next stack entry */
-		if (n == InvalidOffsetNumber)
-		{
-			/* if out of stack entries, we're done */
-			if (so->s_stack == NULL)
-			{
-				ReleaseBuffer(so->curbuf);
-				so->curbuf = InvalidBuffer;
-				return false;
-			}
-
-			stk = so->s_stack;
-			so->curbuf = ReleaseAndReadBuffer(so->curbuf, s->indexRelation,
-											  stk->rts_blk);
-			p = BufferGetPage(so->curbuf);
-			po = (RTreePageOpaque) PageGetSpecialPointer(p);
-
-			if (ScanDirectionIsBackward(dir))
-				n = OffsetNumberPrev(stk->rts_child);
-			else
-				n = OffsetNumberNext(stk->rts_child);
-			so->s_stack = stk->rts_parent;
-			pfree(stk);
-
-			continue;
-		}
-
-		if (po->flags & F_LEAF)
-		{
-			ItemPointerSet(&(s->currentItemData),
-						   BufferGetBlockNumber(so->curbuf),
-						   n);
-			it = (IndexTuple) PageGetItem(p, PageGetItemId(p, n));
-			s->xs_ctup.t_self = it->t_tid;
-			return true;
-		}
-		else
-		{
-			BlockNumber blk;
-
-			stk = (RTSTACK *) palloc(sizeof(RTSTACK));
-			stk->rts_child = n;
-			stk->rts_blk = BufferGetBlockNumber(so->curbuf);
-			stk->rts_parent = so->s_stack;
-			so->s_stack = stk;
-
-			it = (IndexTuple) PageGetItem(p, PageGetItemId(p, n));
-			blk = ItemPointerGetBlockNumber(&(it->t_tid));
-
-			/*
-			 * Note that we release the pin on the page as we descend down the
-			 * tree, even though there's a good chance we'll eventually need
-			 * to re-read the buffer later in this scan. This may or may not
-			 * be optimal, but it doesn't seem likely to make a huge
-			 * performance difference either way.
-			 */
-			so->curbuf = ReleaseAndReadBuffer(so->curbuf, s->indexRelation, blk);
-			p = BufferGetPage(so->curbuf);
-			po = (RTreePageOpaque) PageGetSpecialPointer(p);
-
-			if (ScanDirectionIsBackward(dir))
-				n = PageGetMaxOffsetNumber(p);
-			else
-				n = FirstOffsetNumber;
-		}
-	}
-}
-
-/*
- * Return the offset of the next matching index entry. We begin the
- * search at offset "n" and search for matches in the direction
- * "dir". If no more matching entries are found on the page,
- * InvalidOffsetNumber is returned.
- */
-static OffsetNumber
-findnext(IndexScanDesc s, OffsetNumber n, ScanDirection dir)
-{
-	OffsetNumber maxoff;
-	IndexTuple	it;
-	RTreePageOpaque po;
-	RTreeScanOpaque so;
-	Page		p;
-
-	so = (RTreeScanOpaque) s->opaque;
-	p = BufferGetPage(so->curbuf);
-
-	maxoff = PageGetMaxOffsetNumber(p);
-	po = (RTreePageOpaque) PageGetSpecialPointer(p);
-
-	/*
-	 * If we modified the index during the scan, we may have a pointer to a
-	 * ghost tuple, before the scan.  If this is the case, back up one.
-	 */
-
-	if (so->s_flags & RTS_CURBEFORE)
-	{
-		so->s_flags &= ~RTS_CURBEFORE;
-		n = OffsetNumberPrev(n);
-	}
-
-	while (n >= FirstOffsetNumber && n <= maxoff)
-	{
-		it = (IndexTuple) PageGetItem(p, PageGetItemId(p, n));
-		if (po->flags & F_LEAF)
-		{
-			if (index_keytest(it,
-							  RelationGetDescr(s->indexRelation),
-							  s->numberOfKeys, s->keyData))
-				break;
-		}
-		else
-		{
-			if (index_keytest(it,
-							  RelationGetDescr(s->indexRelation),
-							  so->s_internalNKey, so->s_internalKey))
-				break;
-		}
-
-		if (ScanDirectionIsBackward(dir))
-			n = OffsetNumberPrev(n);
-		else
-			n = OffsetNumberNext(n);
-	}
-
-	if (n >= FirstOffsetNumber && n <= maxoff)
-		return n;				/* found a match on this page */
-	else
-		return InvalidOffsetNumber;		/* no match, go to next page */
-}