Added .cpp and .h files under the sql/src subdirectory
git-svn-id: https://svn.code.sf.net/p/flaim/code/trunk@469 0109f412-320b-0410-ab79-c3e0c5ffbbe6
This commit is contained in:
dsandersoremutah
334
sql/src/fscursor.h
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334
sql/src/fscursor.h
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//------------------------------------------------------------------------------
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// Desc: This is the header file that contains the FSIndexCursor class.
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//
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// Tabs: 3
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//
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// Copyright (c) 2000-2006 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: fscursor.h 3109 2006-01-19 13:07:07 -0700 (Thu, 19 Jan 2006) dsanders $
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//------------------------------------------------------------------------------
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#ifndef FSCURSOR_H
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#define FSCURSOR_H
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#include "fdynsset.h"
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typedef struct KeyPosition
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{
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FLMBYTE ucKey [SFLM_MAX_KEY_SIZE];
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FLMUINT uiKeyLen;
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} KEYPOS;
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/*============================================================================
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Desc: File system implementation of a cursor for an index.
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============================================================================*/
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class FSIndexCursor : public F_Object
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{
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public:
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// Constructors & Destructor
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FSIndexCursor();
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virtual ~FSIndexCursor();
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void resetCursor( void);
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RCODE resetTransaction(
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F_Db * pDb);
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RCODE setupKeys(
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F_Db * pDb,
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F_INDEX * pIndex,
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F_TABLE * pTable,
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SQL_PRED * pPred,
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FLMBOOL * pbDoRowMatch,
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FLMBOOL * pbCanCompareOnKey,
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FLMUINT64 * pui64LeafBlocksBetween,
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FLMUINT64 * pui64TotalRefs,
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FLMBOOL * pbTotalsEstimated);
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RCODE currentKey(
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F_Db * pDb,
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F_DataVector * pKey);
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RCODE firstKey(
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F_Db * pDb,
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F_DataVector * pKey);
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RCODE lastKey(
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F_Db * pDb,
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F_DataVector * pKey);
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RCODE nextKey(
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F_Db * pDb,
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F_DataVector * pKey,
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FLMBOOL bSkipCurrKey);
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RCODE prevKey(
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F_Db * pDb,
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F_DataVector * pKey,
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FLMBOOL bSkipCurrKey);
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private:
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RCODE useNewDb(
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F_Db * pDb);
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RCODE openBTree(
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F_Db * pDb);
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// Does this index support native absolute positioning?
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FLMBOOL isAbsolutePositionable()
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{
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return (m_pIndex->uiFlags & IXD_ABS_POS) ? TRUE : FALSE;
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}
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RCODE getKeyData(
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F_Btree * pBTree,
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FLMUINT uiDataLen);
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RCODE setKeyPosition(
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F_Db * pDb,
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FLMBOOL bGoingForward,
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FLMBOOL bExcludeKey,
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F_DataVector * pExtSrchKey,
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KEYPOS * pSearchKey,
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KEYPOS * pFoundKey,
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FLMBOOL bGetKeyData,
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FLMUINT * puiDataLen,
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F_Btree * pBTree,
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FLMUINT * puiAbsolutePos);
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FINLINE void closeBTree( void)
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{
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if (m_bTreeOpen)
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{
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m_pbTree->btClose();
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m_bTreeOpen = FALSE;
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m_pDb = NULL;
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m_eTransType = SFLM_NO_TRANS;
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}
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}
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FINLINE RCODE checkTransaction(
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F_Db * pDb)
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{
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RCODE rc = NE_SFLM_OK;
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if (RC_OK( rc = pDb->flushKeys()))
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{
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rc = (RCODE)((m_ui64CurrTransId != pDb->m_ui64CurrTransID ||
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m_uiBlkChangeCnt != pDb->m_uiBlkChangeCnt)
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? resetTransaction( pDb)
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: NE_SFLM_OK);
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}
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return( rc);
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}
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RCODE populateKey(
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F_DataVector * pKey);
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RCODE checkIfKeyInRange(
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FLMBOOL bPositionForward);
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FINLINE void getCurrKey(
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KEYPOS * pKey
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)
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{
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f_memcpy( pKey->ucKey, m_curKey.ucKey, m_curKey.uiKeyLen);
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pKey->uiKeyLen = m_curKey.uiKeyLen;
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}
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// Database information
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FLMUINT64 m_ui64CurrTransId;
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FLMUINT m_uiBlkChangeCnt;
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FLMUINT m_uiIndexNum;
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LFILE * m_pLFile;
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F_INDEX * m_pIndex;
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F_Db * m_pDb;
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eDbTransType m_eTransType;
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// Key range information
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FLMBOOL m_bSetup;
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KEYPOS m_fromKey;
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KEYPOS m_untilKey;
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// State information.
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FLMBOOL m_bAtBOF; // Before the first key.
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FLMBOOL m_bAtEOF; // After the last key.
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KEYPOS m_curKey; // Current key
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FLMBYTE * m_pucCurKeyDataBuf;
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FLMUINT m_uiCurKeyDataBufSize;
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FLMUINT m_uiCurKeyDataLen;
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F_Btree * m_pbTree;
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FLMBOOL m_bTreeOpen;
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IXKeyCompare m_ixCompare;
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F_DataVector m_fromExtKey;
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F_DataVector m_untilExtKey;
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friend class F_Query;
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};
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/*============================================================================
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Desc: File system implementation of a cursor for a collection.
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============================================================================*/
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class FSTableCursor : public F_Object
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{
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public:
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// Constructors & Destructor
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FSTableCursor();
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virtual ~FSTableCursor();
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void resetCursor();
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RCODE resetTransaction(
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F_Db * pDb);
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RCODE setupRange(
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F_Db * pDb,
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FLMUINT uiTableNum,
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FLMUINT64 ui64LowRowId,
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FLMUINT64 ui64HighRowId,
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FLMUINT64 * pui64LeafBlocksBetween,
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FLMUINT64 * pui64TotalRows,
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FLMBOOL * pbTotalsEstimated);
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RCODE currentRow(
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F_Db * pDb,
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F_Row ** ppRow,
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FLMUINT64 * pui64RowId);
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RCODE firstRow(
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F_Db * pDb,
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F_Row ** ppRow,
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FLMUINT64 * pui64RowId);
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RCODE lastRow(
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F_Db * pDb,
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F_Row ** ppRow,
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FLMUINT64 * pui64RowId);
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RCODE nextRow(
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F_Db * pDb,
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F_Row ** ppRow,
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FLMUINT64 * pui64RowId);
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RCODE prevRow(
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F_Db * pDb,
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F_Row ** ppRow,
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FLMUINT64 * pui64RowId);
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private:
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RCODE setRowPosition(
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F_Db * pDb,
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FLMBOOL bGoingForward,
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FLMUINT64 ui64RowId,
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FLMBOOL bPopulateCurRowId,
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F_Btree * pBTree);
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RCODE openBTree(
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F_Db * pDb);
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FINLINE void closeBTree( void)
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{
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if (m_bTreeOpen)
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{
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m_pbTree->btClose();
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m_bTreeOpen = FALSE;
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m_pDb = NULL;
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m_eTransType = SFLM_NO_TRANS;
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}
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}
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FINLINE RCODE checkTransaction(
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F_Db * pDb)
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{
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RCODE rc = NE_SFLM_OK;
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if (pDb->m_uiDirtyRowCount)
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{
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if (RC_BAD( rc = pDb->flushDirtyRows()))
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{
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goto Exit;
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}
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}
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rc = (RCODE)((m_pDb != pDb ||
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m_ui64CurrTransId != pDb->m_ui64CurrTransID ||
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m_uiBlkChangeCnt != pDb->m_uiBlkChangeCnt)
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? resetTransaction( pDb)
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: NE_SFLM_OK);
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Exit:
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return( rc);
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}
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RCODE populateRow(
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F_Db * pDb,
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F_Row ** ppRow,
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FLMUINT64 * pui64RowId);
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RCODE checkIfRowInRange(
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FLMBOOL bPositionForward);
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// Database Information
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FLMUINT64 m_ui64CurrTransId;
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FLMUINT m_uiBlkChangeCnt;
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FLMUINT m_uiTableNum;
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F_TABLE * m_pTable;
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LFILE * m_pLFile;
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F_Db * m_pDb;
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eDbTransType m_eTransType;
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// Key range information
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FLMBOOL m_bSetup;
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FLMUINT64 m_ui64FromRowId;
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FLMUINT64 m_ui64UntilRowId;
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// State information.
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FLMBOOL m_bAtBOF; // Before the first row.
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FLMBOOL m_bAtEOF; // After the last row.
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FLMUINT64 m_ui64CurRowId; // Current row id
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FLMBYTE m_ucCurRowKey [FLM_MAX_NUM_BUF_SIZE];
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FLMUINT m_uiCurRowKeyLen;
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F_Btree * m_pbTree;
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FLMBOOL m_bTreeOpen;
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};
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RCODE flmBuildFromAndUntilKeys(
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F_Dict * pDict,
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F_INDEX * pIndex,
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F_TABLE * pTable,
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SQL_PRED * pPred,
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F_DataVector * pFromSearchKey,
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FLMBYTE * pucFromKey,
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FLMUINT * puiFromKeyLen,
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F_DataVector * pUntilSearchKey,
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FLMBYTE * pucUntilKey,
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FLMUINT * puiUntilKeyLen,
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FLMBOOL * pbDoRowMatch,
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FLMBOOL * pbCanCompareOnKey);
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#endif
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