// Setting QueryLeaf's appropriated connection Object
for (int cpt = 0; (cpt < leafs.length); cpt++) {
connRess.setConnection(leafs[cpt], connection);
if (evalMDMap != null) {
//range values specified
BasicEvaluationMetaData evalMD = new BasicEvaluationMetaData();
evalMD.setLimitedRangeStartAt((int) userqd.getIndexFirst());
evalMD.setLimitedRangeSize((int) (userqd.getIndexLast() - userqd.getIndexFirst()));
evalMDMap.put(leafs[cpt], evalMD);
}
}
PrefetchBuffer prefetchBuffer = null;