void CRUEmpCheck::
PerformSingleCheck(CRUEmpCheckVector::Elem &elem,
CRUTbl::IUDLogContentType ct,
StmtType stmtType)
{
if (0 == (ct & checkMask_))
{
// We are not interested in this check
return;
}
if (0 != (ct & elem.checkBitmap_))
{
// The check of the larger epoch has produced a positive result
return;
}
CDMPreparedStatement *pStmt =
pSQLContainer_->GetPreparedStatement(stmtType);
RUASSERT(NULL != pStmt);
TInt32 ep = elem.epoch_;
if (CRUTbl::RANGE == ct)
{
ep = -ep; // Range records reside in negative epochs
}
pStmt->SetInt(1, ep);
// Execute the "SELECT [FIRST 1] ... " query.
// If a row is fetched, the specific delta is non-empty.
pStmt->ExecuteQuery();
CDMResultSet *pResultSet = pStmt->GetResultSet();
BOOL isNonEmpty = pResultSet->Next();
// The statement must be closed before the next invocation
pStmt->Close();
if (TRUE == isNonEmpty)
{
pVec_->SetDeltaNonEmpty(elem.epoch_, ct);
}
}
void CRUIUDLogRecord::
ReadCKColumns(CDMResultSet &rs, Int32 startCKColumn)
{
// Performance optimization - switch the IsNull check off!
rs.PresetNotNullable(TRUE);
Lng32 len = GetCKLength();
for (Int32 i=0; i<len; i++)
{
Int32 colIndex = i + startCKColumn;
#pragma nowarn(1506) // warning elimination
ckTuple_.GetItem(i).Build(rs, colIndex);
#pragma warn(1506) // warning elimination
}
rs.PresetNotNullable(FALSE);
}
TInt64 CRULogCleanupTaskExecutor::getRowCount()
{
CDMPreparedStatement *pStat =
logCleanupTEDynamicContainer_.GetPreparedStatement(CLEAN_ROWCOUNT);
ExecuteStatement(*pStat,
IDS_RU_LOG_CLEANUP_FAILED,
NULL, /* error argument */
TRUE, /* Obtain row count */
TRUE /* isQuery */);
CDMResultSet *resultSet = pStat->GetResultSet();
resultSet->Next();
TInt64 rowCount = resultSet->GetLargeInt(1);
pStat->Close();
return rowCount;
}
void CRUIUDLogRecord::ReadControlColumns(CDMResultSet &rs, Int32 startCKColumn)
{
// Performance optimization - switch the IsNull check off!
rs.PresetNotNullable(TRUE);
// Read the mandatory columns
epoch_ = rs.GetInt(CRUDupElimConst::OFS_EPOCH+1);
opType_ = rs.GetInt(CRUDupElimConst::OFS_OPTYPE+1);
if (FALSE == IsSingleRowOp())
{
// The range records are logged in the negative epochs.
// Logically, however, they belong to the positive epochs.
epoch_ = -epoch_;
}
if (FALSE == IsSingleRowOp() && FALSE == IsBeginRange())
{
// End-range record
rangeSize_ = rs.GetInt(CRUDupElimConst::OFS_RNGSIZE+1);
}
else
{
rangeSize_ = 0;
}
Int32 numCKCols = startCKColumn-2; // Count from 1 + syskey
if (CRUDupElimConst::NUM_IUD_LOG_CONTROL_COLS_EXTEND == numCKCols)
{
// This is DE level 3, read the optional columns
ignore_ = rs.GetInt(CRUDupElimConst::OFS_IGNORE+1);
// The update bitmap buffer must be setup
RUASSERT(NULL != pUpdateBitmap_);
// The update bitmap can be a null
rs.PresetNotNullable(FALSE);
rs.GetString(CRUDupElimConst::OFS_UPD_BMP+1,
pUpdateBitmap_->GetBuffer(),
pUpdateBitmap_->GetSize());
}
// Syskey is always the last column before the CK
syskey_ = rs.GetLargeInt(startCKColumn-1);
}
