private BibTrees fetchResultSet(int batchSize, BatchStatistics batchStatistics, Boolean isBibOnly) throws Exception { StopWatch stopWatch = new StopWatch(); stopWatch.start(); BibTrees bibTrees = new BibTrees(); int count = 0; if (batchSize <= 0) { return bibTrees; } while (bibResultSet.next()) { count++; BibTree bibTree = new BibTree(); Bib bib = fetchBibRecord(); bibTree.setBib(bib); if (!isBibOnly) { List<HoldingsTree> holdingsList = fetchHoldingsTreeForBib(Integer.parseInt(bib.getLocalId())); bibTree.getHoldingsTrees().addAll(holdingsList); batchStatistics.addHoldingsCount(holdingsList.size()); for (HoldingsTree holdingsTree : holdingsList) { batchStatistics.addItemCount(holdingsTree.getItems().size()); } } bibTrees.getBibTrees().add(bibTree); if (count == batchSize) { break; } } stopWatch.stop(); batchStatistics.addTimeTaken(stopWatch.getTotalTimeMillis()); batchStatistics.addBibCount(bibTrees.getBibTrees().size()); return bibTrees; }