void CRUDependenceGraph::MergePipelinedTasks(const CRUTaskList &pplTaskList)
{
if (TRUE == pplTaskList.IsEmpty())
{
return;
}
CRURefreshTask *pTopTask = (CRURefreshTask*) pScheduledTask_;
CRURefreshTask *pNewTopTask;
CRUMVList &mvList = pTopTask->GetMVList();
DSListPosition pos = pplTaskList.GetHeadPosition();
while (NULL != pos)
{
// The next task to merge ...
pNewTopTask = (CRURefreshTask*)(pplTaskList.GetNext(pos));
CRUMV &topMV = pNewTopTask->GetRootMV();
mvList.AddTail(&topMV);
// Inherit the connectivity of the newly merged task
InheritTopTaskConnectivity(pNewTopTask);
RemoveFromAvailableList(pNewTopTask);
pTopTask = pNewTopTask;
}
}
void CRURefreshTaskExecutor::FinalMetadataUpdate()
{
CRURefreshTask *pParentTask = GetRefreshTask();
RUASSERT (NULL != pParentTask);
TInt32 currDuration = 0;
TInt64 ts = CalculateTimeStamp();
if (TRUE == pParentTask->NeedToExecuteInternalRefresh())
{
currDuration = GetTimerDuration();
}
CRUMV *pPrevMV, *pCurrMV = NULL;
CRUMVList &mvList = pParentTask->GetMVList();
DSListPosition pos = mvList.GetHeadPosition();
while (NULL != pos)
{
pPrevMV = pCurrMV;
pCurrMV = mvList.GetNext(pos);
// Update the MV's REFRESHED_AT timestamp
pCurrMV->SetTimestamp(ts);
// publish the refresh event to the PUBLISH table
NABoolean isRecomputePublish = (IsRecompute() == TRUE);
pCurrMV->PublishMVRefresh(isRecomputePublish);
if (CDDObject::eON_STATEMENT != pCurrMV->GetRefreshType())
{
if (NULL == pPrevMV)
{
// This is the Root MV (the first in the list)
if (CDDObject::eON_REQUEST == pCurrMV->GetRefreshType())
{
// For every table T used by MV,
// set MV.EPOCH[T]<--T.CURRENT_EPOCH.
UpdateRootMVCurrentEpochVector();
}
UpdateRootMVStatistics(currDuration);
}
else
{
UpdateNonRootMVStatistics(pCurrMV, pPrevMV, currDuration);
}
}
pCurrMV->SaveMetadata();
}
if (CDDObject::eON_STATEMENT != GetRootMV().GetRefreshType())
{
IncrementTopMvCurrentEpoch();
}
}
