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This commit is contained in:
Leonid Fedorov
@ -37,13 +37,15 @@ namespace WriteEngine
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* Constructor
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*/
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IndexList::IndexList()
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: m_oid((OID) INVALID_NUM), m_useNarray(true),
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m_curLevel(INVALID_NUM), m_curBlkPos(0),
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m_curLevelPos(INVALID_NUM)
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: m_oid((OID)INVALID_NUM)
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, m_useNarray(true)
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, m_curLevel(INVALID_NUM)
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, m_curBlkPos(0)
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, m_curLevelPos(INVALID_NUM)
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{
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m_freemgr.setDebugLevel(DEBUG_0);
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init();
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m_freemgr.setDebugLevel(DEBUG_0);
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init();
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};
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/****************************************************************
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* DESCRIPTION:
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@ -64,71 +66,70 @@ IndexList::IndexList()
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* failure - it did not create the index list header
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*
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*******************************************************************/
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const int IndexList::addIndexListHdr( FILE* pFile, const RID& rowId,
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const uint64_t& key,
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IdxEmptyListEntry* newEmptyListPtr)
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const int IndexList::addIndexListHdr(FILE* pFile, const RID& rowId, const uint64_t& key,
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IdxEmptyListEntry* newEmptyListPtr)
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{
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int rc;
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CommBlock cb;
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m_pFile = pFile;
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cb.file.oid = m_oid;
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cb.file.pFile = m_pFile;
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//Set up the header structure
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//Initialize header blokcs
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rc = resetBlk(&m_hdrBlock);
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m_hdrLbid = INVALID_LBID;
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m_hdrSbid = INVALID_NUM;
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m_hdrEntry = INVALID_NUM;
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int rc;
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CommBlock cb;
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m_pFile = pFile;
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cb.file.oid = m_oid;
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cb.file.pFile = m_pFile;
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// Set up the header structure
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// Initialize header blokcs
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rc = resetBlk(&m_hdrBlock);
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m_hdrLbid = INVALID_LBID;
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m_hdrSbid = INVALID_NUM;
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m_hdrEntry = INVALID_NUM;
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//Initialize the new Index List header to null
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memset( &m_curIdxRidListHdr, 0, LIST_HDR_SIZE );
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//Assign the bit fields for the first entry in the Index List Header
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m_curIdxRidListHdr.idxRidListSize.type = LIST_SIZE_TYPE;
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m_curIdxRidListHdr.idxRidListSize.spare = 0x0;
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m_curIdxRidListHdr.idxRidListSize.size = 1;
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//Assign the bit fields for the second entry of the Index List Header
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m_curIdxRidListHdr.key = key;
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//Assign bit fields for the third entry of the Index List Header
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m_curIdxRidListHdr.firstIdxRidListEntry.type = LIST_RID_TYPE;
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m_curIdxRidListHdr.firstIdxRidListEntry.spare = 0x0;
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m_curIdxRidListHdr.firstIdxRidListEntry.rid = rowId ;
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//Assign bit fields for the fourth entry of the Index List Header
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m_curIdxRidListHdr.nextIdxRidListPtr.type = LIST_NOT_USED_TYPE;
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m_curIdxRidListHdr.nextIdxRidListPtr.spare = 0x0;
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m_curIdxRidListHdr.nextIdxRidListPtr.llp = 0x0;
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/* Get assigned space for the header from free manager
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* Get the new block for the new idx list header
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* The header needs LIST_HDR_SIZE bytes
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*/
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rc = getSegment(pFile, ENTRY_4, newEmptyListPtr);
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// Initialize the new Index List header to null
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memset(&m_curIdxRidListHdr, 0, LIST_HDR_SIZE);
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// Assign the bit fields for the first entry in the Index List Header
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m_curIdxRidListHdr.idxRidListSize.type = LIST_SIZE_TYPE;
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m_curIdxRidListHdr.idxRidListSize.spare = 0x0;
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m_curIdxRidListHdr.idxRidListSize.size = 1;
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// Assign the bit fields for the second entry of the Index List Header
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m_curIdxRidListHdr.key = key;
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// Assign bit fields for the third entry of the Index List Header
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m_curIdxRidListHdr.firstIdxRidListEntry.type = LIST_RID_TYPE;
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m_curIdxRidListHdr.firstIdxRidListEntry.spare = 0x0;
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m_curIdxRidListHdr.firstIdxRidListEntry.rid = rowId;
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// Assign bit fields for the fourth entry of the Index List Header
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m_curIdxRidListHdr.nextIdxRidListPtr.type = LIST_NOT_USED_TYPE;
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m_curIdxRidListHdr.nextIdxRidListPtr.spare = 0x0;
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m_curIdxRidListHdr.nextIdxRidListPtr.llp = 0x0;
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/* Get assigned space for the header from free manager
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* Get the new block for the new idx list header
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* The header needs LIST_HDR_SIZE bytes
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*/
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rc = getSegment(pFile, ENTRY_4, newEmptyListPtr);
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if (rc != NO_ERROR)
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return rc;
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m_hdrLbid = newEmptyListPtr->fbo;
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m_hdrSbid = newEmptyListPtr->sbid;
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m_hdrEntry = newEmptyListPtr->entry;
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//Write Index List Header to the file block
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//Write LIST_HDR_SIZE bytes in one time.
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rc = readDBFile( cb, m_hdrBlock.data, m_hdrLbid );
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rc = writeSubBlockEntry( cb, &m_hdrBlock, m_hdrLbid, m_hdrSbid,
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m_hdrEntry, LIST_HDR_SIZE, &m_curIdxRidListHdr );
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if (rc != NO_ERROR)
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{
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return rc;
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}
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//Wrote Header Block Out already, Start Over next time
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//Update the flags to indicate there is data on the header block
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m_hdrBlock.dirty = true;
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m_hdrBlock.lbid = m_hdrLbid;
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m_hdrBlock.state = BLK_READ;
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m_lastLbid = INVALID_LBID;
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//DONE
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if (rc != NO_ERROR)
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return rc;
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m_hdrLbid = newEmptyListPtr->fbo;
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m_hdrSbid = newEmptyListPtr->sbid;
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m_hdrEntry = newEmptyListPtr->entry;
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// Write Index List Header to the file block
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// Write LIST_HDR_SIZE bytes in one time.
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rc = readDBFile(cb, m_hdrBlock.data, m_hdrLbid);
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rc = writeSubBlockEntry(cb, &m_hdrBlock, m_hdrLbid, m_hdrSbid, m_hdrEntry, LIST_HDR_SIZE,
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&m_curIdxRidListHdr);
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if (rc != NO_ERROR)
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{
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return rc;
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}
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// Wrote Header Block Out already, Start Over next time
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// Update the flags to indicate there is data on the header block
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m_hdrBlock.dirty = true;
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m_hdrBlock.lbid = m_hdrLbid;
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m_hdrBlock.state = BLK_READ;
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m_lastLbid = INVALID_LBID;
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// DONE
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return rc;
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};
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/****************************************************************
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* DESCRIPTION:
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@ -138,32 +139,31 @@ const int IndexList::addIndexListHdr( FILE* pFile, const RID& rowId,
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* success - successfully created the index list header
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* failure - it did not create the index list header
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***********************************************************/
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const int IndexList::updateIndexList(FILE* pFile, const RID& newRid,
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const uint64_t& key,
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const int IndexList::updateIndexList(FILE* pFile, const RID& newRid, const uint64_t& key,
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IdxEmptyListEntry* curIdxRidListHdrPtr)
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{
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int rc;
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m_pFile = pFile;
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int rc;
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m_pFile = pFile;
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//Initialization
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if ( (key != m_curIdxRidListHdr.key) || (m_hdrBlock.state == BLK_INIT))
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{
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rc = initGetHdr(key, curIdxRidListHdrPtr);
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// Initialization
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if ((key != m_curIdxRidListHdr.key) || (m_hdrBlock.state == BLK_INIT))
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{
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rc = initGetHdr(key, curIdxRidListHdrPtr);
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if (key != m_curIdxRidListHdr.key)
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return ERR_IDX_LIST_INVALID_KEY;
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}
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if (key != m_curIdxRidListHdr.key)
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return ERR_IDX_LIST_INVALID_KEY;
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}
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rc = updateIndexList(newRid, key);
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rc = updateIndexList(newRid, key);
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if (rc != NO_ERROR)
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{
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return rc;
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}
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//Write everything out
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rc = updateIndexListWrite();
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if (rc != NO_ERROR)
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{
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return rc;
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}
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// Write everything out
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rc = updateIndexListWrite();
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return rc;
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};
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/****************************************************************
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* DESCRIPTION:
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@ -175,26 +175,26 @@ const int IndexList::updateIndexList(FILE* pFile, const RID& newRid,
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***********************************************************/
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const int IndexList::updateIndexList(const RID& newRid, const uint64_t& key)
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{
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int rc = NO_ERROR;
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int rc = NO_ERROR;
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//m_lastLbid==0 or not determines if we can skip from the header,the first
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//subblock or go to the last inserted block
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if (m_lastLbid == (uint64_t)INVALID_LBID)
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{
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rc = updateHdrSub(newRid, key);
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}
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else // get the lastLbid info from header
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{
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//m_lastLbid > 0, space is in some block now
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m_lbid = m_lastLbid;
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m_sbid = 0;
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m_entry = 0;
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m_segType = LIST_BLOCK_TYPE;
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m_curType = LIST_BLOCK_TYPE;
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rc = addRidInBlk(newRid);
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}
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// m_lastLbid==0 or not determines if we can skip from the header,the first
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// subblock or go to the last inserted block
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if (m_lastLbid == (uint64_t)INVALID_LBID)
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{
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rc = updateHdrSub(newRid, key);
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}
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else // get the lastLbid info from header
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{
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// m_lastLbid > 0, space is in some block now
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m_lbid = m_lastLbid;
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m_sbid = 0;
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m_entry = 0;
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m_segType = LIST_BLOCK_TYPE;
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m_curType = LIST_BLOCK_TYPE;
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rc = addRidInBlk(newRid);
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}
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return rc;
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return rc;
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};
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/************************************************
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@ -215,24 +215,24 @@ const int IndexList::updateIndexList(const RID& newRid, const uint64_t& key)
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* Success -- 0
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* Fail -- ERR_IDX_LIST_INVALID_DELETE
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************************************************/
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const int IndexList::deleteIndexList( FILE* pFile, const RID& rowId,
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const uint64_t& key, IdxEmptyListEntry* curIdxRidListHdrPtr)
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const int IndexList::deleteIndexList(FILE* pFile, const RID& rowId, const uint64_t& key,
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IdxEmptyListEntry* curIdxRidListHdrPtr)
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{
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int rc = ERR_IDX_LIST_INVALID_DELETE;
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m_pFile = pFile;
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int rc = ERR_IDX_LIST_INVALID_DELETE;
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m_pFile = pFile;
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getHdrInfo(curIdxRidListHdrPtr);
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getHdrInfo(curIdxRidListHdrPtr);
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if (key != m_curIdxRidListHdr.key)
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{
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memset( m_hdrBlock.data, 0, sizeof(m_hdrBlock.data));
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m_hdrBlock.dirty = false;
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m_hdrBlock.state = BLK_INIT;
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return ERR_IDX_LIST_INVALID_KEY;
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}
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if (key != m_curIdxRidListHdr.key)
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{
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memset(m_hdrBlock.data, 0, sizeof(m_hdrBlock.data));
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m_hdrBlock.dirty = false;
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m_hdrBlock.state = BLK_INIT;
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return ERR_IDX_LIST_INVALID_KEY;
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}
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rc = deleteIndexList(rowId, key);
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return rc;
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rc = deleteIndexList(rowId, key);
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return rc;
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}
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/************************************************
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@ -253,102 +253,93 @@ const int IndexList::deleteIndexList( FILE* pFile, const RID& rowId,
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* Success -- 0
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* Fail -- ERR_IDX_LIST_INVALID_DELETE
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************************************************/
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const int IndexList::deleteIndexList( const RID& rowId, const uint64_t& key)
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const int IndexList::deleteIndexList(const RID& rowId, const uint64_t& key)
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{
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int rc = ERR_IDX_LIST_INVALID_DELETE;
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RID savedRid ;
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DataBlock prevDataBlock;
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int rc = ERR_IDX_LIST_INVALID_DELETE;
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RID savedRid;
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DataBlock prevDataBlock;
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CommBlock cb;
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cb.file.oid = m_oid;
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cb.file.pFile = m_pFile;
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CommBlock cb;
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cb.file.oid = m_oid;
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cb.file.pFile = m_pFile;
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//Check the first row location, 3rd entry
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//Because it may be deleted from the delete action
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//The header size cannot tell us the rowid size on header
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if (m_curIdxRidListHdr.firstIdxRidListEntry.type
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== (int)LIST_RID_TYPE)
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// Check the first row location, 3rd entry
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// Because it may be deleted from the delete action
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// The header size cannot tell us the rowid size on header
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if (m_curIdxRidListHdr.firstIdxRidListEntry.type == (int)LIST_RID_TYPE)
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{
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if (m_curIdxRidListHdr.firstIdxRidListEntry.rid == rowId)
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{
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if (m_curIdxRidListHdr.firstIdxRidListEntry.rid
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== rowId)
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{
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m_curIdxRidListHdr.firstIdxRidListEntry.type
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= LIST_NOT_USED_TYPE; //not used type
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m_curIdxRidListHdr.firstIdxRidListEntry.rid = 0;
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m_curIdxRidListHdr.idxRidListSize.size--;
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rc = writeSubBlockEntry(cb, &m_hdrBlock, m_hdrLbid,
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m_hdrSbid, m_hdrEntry,
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LIST_HDR_SIZE,
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&m_curIdxRidListHdr );
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memset(m_hdrBlock.data, 0, sizeof(m_hdrBlock.data));
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m_hdrBlock.dirty = false;
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m_dLbid = m_hdrLbid;
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m_dSbid = m_hdrSbid;
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m_dEntry = m_hdrEntry + 2;
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m_curIdxRidListHdr.firstIdxRidListEntry.type = LIST_NOT_USED_TYPE; // not used type
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m_curIdxRidListHdr.firstIdxRidListEntry.rid = 0;
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m_curIdxRidListHdr.idxRidListSize.size--;
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rc = writeSubBlockEntry(cb, &m_hdrBlock, m_hdrLbid, m_hdrSbid, m_hdrEntry, LIST_HDR_SIZE,
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&m_curIdxRidListHdr);
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memset(m_hdrBlock.data, 0, sizeof(m_hdrBlock.data));
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m_hdrBlock.dirty = false;
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m_dLbid = m_hdrLbid;
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m_dSbid = m_hdrSbid;
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m_dEntry = m_hdrEntry + 2;
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return rc;
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}
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};
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return rc;
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}
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};
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//Check Header last entry's type
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int type = m_curIdxRidListHdr.nextIdxRidListPtr.type;
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// Check Header last entry's type
|
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int type = m_curIdxRidListHdr.nextIdxRidListPtr.type;
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switch (type)
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{
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case LIST_NOT_USED_TYPE://Header is not full, no sub-block linked
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//No RowId here
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memset(m_hdrBlock.data, 0, sizeof(m_hdrBlock.data));
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m_hdrBlock.dirty = false;
|
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m_dLbid = -1LL;
|
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m_dSbid = -1;
|
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m_dEntry = -1;
|
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return ERR_IDX_LIST_INVALID_DELETE; //not found, failed
|
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switch (type)
|
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{
|
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case LIST_NOT_USED_TYPE: // Header is not full, no sub-block linked
|
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// No RowId here
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memset(m_hdrBlock.data, 0, sizeof(m_hdrBlock.data));
|
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m_hdrBlock.dirty = false;
|
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m_dLbid = -1LL;
|
||||
m_dSbid = -1;
|
||||
m_dEntry = -1;
|
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return ERR_IDX_LIST_INVALID_DELETE; // not found, failed
|
||||
|
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case LIST_RID_TYPE:// There is a row id here, Check!
|
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savedRid = m_curIdxRidListHdr.nextIdxRidListPtr.llp;
|
||||
case LIST_RID_TYPE: // There is a row id here, Check!
|
||||
savedRid = m_curIdxRidListHdr.nextIdxRidListPtr.llp;
|
||||
|
||||
if (savedRid == rowId)
|
||||
{
|
||||
m_curIdxRidListHdr.nextIdxRidListPtr.type
|
||||
= LIST_NOT_USED_TYPE;
|
||||
m_curIdxRidListHdr.nextIdxRidListPtr.llp = 0;
|
||||
m_curIdxRidListHdr.idxRidListSize.size--;
|
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rc = writeSubBlockEntry(cb, &m_hdrBlock, m_hdrLbid,
|
||||
m_hdrSbid, m_hdrEntry,
|
||||
LIST_HDR_SIZE,
|
||||
&m_curIdxRidListHdr );
|
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m_hdrBlock.dirty = false;
|
||||
memset(m_hdrBlock.data, 0, sizeof(m_hdrBlock.data));
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||||
m_dLbid = m_hdrLbid;
|
||||
m_dSbid = m_hdrSbid;
|
||||
m_dEntry = 3;
|
||||
if (savedRid == rowId)
|
||||
{
|
||||
m_curIdxRidListHdr.nextIdxRidListPtr.type = LIST_NOT_USED_TYPE;
|
||||
m_curIdxRidListHdr.nextIdxRidListPtr.llp = 0;
|
||||
m_curIdxRidListHdr.idxRidListSize.size--;
|
||||
rc = writeSubBlockEntry(cb, &m_hdrBlock, m_hdrLbid, m_hdrSbid, m_hdrEntry, LIST_HDR_SIZE,
|
||||
&m_curIdxRidListHdr);
|
||||
m_hdrBlock.dirty = false;
|
||||
memset(m_hdrBlock.data, 0, sizeof(m_hdrBlock.data));
|
||||
m_dLbid = m_hdrLbid;
|
||||
m_dSbid = m_hdrSbid;
|
||||
m_dEntry = 3;
|
||||
|
||||
return rc;
|
||||
}
|
||||
else
|
||||
{
|
||||
m_hdrBlock.dirty = false;
|
||||
memset(m_hdrBlock.data, 0, sizeof(m_hdrBlock.data));
|
||||
m_dLbid = -1LL;
|
||||
m_dSbid = -1;
|
||||
m_dEntry = -1;
|
||||
return ERR_IDX_LIST_INVALID_DELETE;
|
||||
}
|
||||
return rc;
|
||||
}
|
||||
else
|
||||
{
|
||||
m_hdrBlock.dirty = false;
|
||||
memset(m_hdrBlock.data, 0, sizeof(m_hdrBlock.data));
|
||||
m_dLbid = -1LL;
|
||||
m_dSbid = -1;
|
||||
m_dEntry = -1;
|
||||
return ERR_IDX_LIST_INVALID_DELETE;
|
||||
}
|
||||
|
||||
case LIST_SUBBLOCK_TYPE://Not found in header,
|
||||
rc = deleteInSub(rowId);
|
||||
case LIST_SUBBLOCK_TYPE: // Not found in header,
|
||||
rc = deleteInSub(rowId);
|
||||
|
||||
if (rc == NO_ERROR)
|
||||
return rc;
|
||||
if (rc == NO_ERROR)
|
||||
return rc;
|
||||
|
||||
rc = deleteInBlock(rowId);
|
||||
return rc;
|
||||
break;
|
||||
rc = deleteInBlock(rowId);
|
||||
return rc;
|
||||
break;
|
||||
|
||||
default:
|
||||
break;
|
||||
};//end of switch
|
||||
default: break;
|
||||
}; // end of switch
|
||||
|
||||
return ERR_IDX_LIST_INVALID_DELETE;
|
||||
}
|
||||
return ERR_IDX_LIST_INVALID_DELETE;
|
||||
}
|
||||
} // namespace WriteEngine
|
||||
|
||||
Reference in New Issue
Block a user