// this method assume jbbNodeSet contains nodes from the same JBB
EstLogPropSharedPtr AppliedStatMan::getStatsForCANodeIdSet(
const CANodeIdSet & jbbNodeSet)
{
EstLogPropSharedPtr outputEstLogProp;
CANodeIdSet combinedNodeSet = jbbNodeSet;
combinedNodeSet += *(jbbNodeSet.getJBBInput()->getNodeSet());
EstLogPropSharedPtr jBBInput = jbbNodeSet.getJBBInput();
if ((outputEstLogProp = getCachedStatistics(&combinedNodeSet)) == NULL)
outputEstLogProp = synthesizeLogProp(&jbbNodeSet, jBBInput);
return outputEstLogProp;
}
EstLogPropSharedPtr AppliedStatMan::joinJBBChildren(
const CANodeIdSet & leftChildren,
const CANodeIdSet & rightChildren,
EstLogPropSharedPtr & inLP)
{
EstLogPropSharedPtr inputLP = inLP;
EstLogPropSharedPtr outputEstLogProp;
if(inputLP == (*GLOBAL_EMPTY_INPUT_LOGPROP))
inputLP = leftChildren.getJBBInput();
// Because there exist a nodeSet for the left, right and the outer
// child, hence these properties are cacheable. Check to see if the
// outputEstLogProp of the join for the given inLP exist in the cache
CANodeIdSet combinedNodeSet = leftChildren;
combinedNodeSet.insert(rightChildren);
CANodeIdSet * inNodeSet = NULL;
if (inputLP->isCacheable())
{
inNodeSet = inputLP->getNodeSet();
CANodeIdSet combinedWithInputNodeSet = combinedNodeSet;
combinedWithInputNodeSet.insert(*inNodeSet);
outputEstLogProp = getCachedStatistics(&combinedWithInputNodeSet);
}
if(outputEstLogProp == NULL)
outputEstLogProp = synthesizeLogProp(&combinedNodeSet, inputLP);
return outputEstLogProp;
} // AppliedStatMan::joinJBBChildren
