ffe3cb6975
git-svn-id: https://svn.code.sf.net/p/flaim/code/trunk@482 0109f412-320b-0410-ab79-c3e0c5ffbbe6
101 lines
2.6 KiB
C++
101 lines
2.6 KiB
C++
//------------------------------------------------------------------------------
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// Desc: Insert and delete keys in an index B-Tree.
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//
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// Tabs: 3
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//
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// Copyright (c) 1991-2006 Novell, Inc. All Rights Reserved.
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of version 2 of the GNU General Public
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// License as published by the Free Software Foundation.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, contact Novell, Inc.
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//
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// To contact Novell about this file by physical or electronic mail,
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// you may find current contact information at www.novell.com
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//
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// $Id$
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//------------------------------------------------------------------------------
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#include "flaimsys.h"
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/***************************************************************************
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Desc: Update (add or delete) a single reference
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*****************************************************************************/
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RCODE F_Db::refUpdate(
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F_INDEX * pIndex,
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KREF_ENTRY * pKrefEntry,
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FLMBOOL bNormalUpdate)
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{
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RCODE rc = NE_SFLM_OK;
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F_Btree * pbtree = NULL;
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IXKeyCompare compareObject;
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// Get a btree
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if (RC_BAD( rc = gv_SFlmSysData.pBtPool->btpReserveBtree( &pbtree)))
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{
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goto Exit;
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}
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flmAssert( pIndex->lfInfo.uiRootBlk);
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compareObject.setIxInfo( this, pIndex);
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if (bNormalUpdate && pKrefEntry->bDelete)
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{
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compareObject.setOldRow( pKrefEntry->pRow);
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}
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if( RC_BAD( rc = pbtree->btOpen( this, &pIndex->lfInfo,
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(pIndex->uiFlags & IXD_ABS_POS) ? TRUE : FALSE,
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(pIndex->pDataIcds) ? TRUE : FALSE, &compareObject)))
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{
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goto Exit;
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}
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if (!pKrefEntry->bDelete)
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{
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pbtree->btResetBtree();
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if( RC_BAD( rc = pbtree->btInsertEntry(
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(FLMBYTE *)&pKrefEntry [1], pKrefEntry->ui16KeyLen,
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pKrefEntry->uiDataLen
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? ((FLMBYTE *)(&pKrefEntry [1])) + 1 + pKrefEntry->ui16KeyLen
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: NULL,
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pKrefEntry->uiDataLen, TRUE, TRUE)))
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{
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goto Exit;
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}
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}
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else
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{
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pbtree->btResetBtree();
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if (RC_BAD( rc = pbtree->btRemoveEntry(
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(FLMBYTE *)&pKrefEntry [1], pKrefEntry->ui16KeyLen)))
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{
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if (rc == NE_SFLM_NOT_FOUND)
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{
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// Already been deleted, ignore the error condition and go on.
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RC_UNEXPECTED_ASSERT( rc);
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rc = NE_SFLM_OK;
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}
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goto Exit;
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}
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}
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Exit:
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if (pbtree)
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{
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gv_SFlmSysData.pBtPool->btpReturnBtree( &pbtree);
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}
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return( rc);
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}
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