List of usage examples for java.util.stream Collectors groupingBy
public static <T, K> Collector<T, ?, Map<K, List<T>>> groupingBy(Function<? super T, ? extends K> classifier)
From source file:com.oneops.cms.cm.service.CmsCmProcessor.java
/** * Gets the from ci relations by multiple names * * @param fromId the from id/*from ww w . jav a2s . c om*/ * @param relationNames the relation names * @param shortRelNames the short relation names * @return the from ci relations */ public Map<String, List<CmsCIRelation>> getFromCIRelationsByMultiRelationNames(long fromId, List<String> relationNames, List<String> shortRelNames) { List<CmsCIRelation> relations = getFromCIRelationsLocal(fromId, relationNames, shortRelNames); Map<String, List<CmsCIRelation>> relationsMap; if (relations != null) { relationsMap = relations.stream().collect(Collectors.groupingBy(CmsCIRelation::getRelationName)); } else { relationsMap = Collections.emptyMap(); } return relationsMap; }
From source file:com.thinkbiganalytics.feedmgr.nifi.cache.NifiFlowCacheImpl.java
private Map<String, List<NifiFlowProcessor>> toFlowIdProcessorMap(Collection<NifiFlowProcessor> processors) { if (processors != null && !processors.isEmpty()) { return processors.stream().filter(nifiFlowProcessor -> nifiFlowProcessor.getFlowId() != null) .collect(Collectors.groupingBy(NifiFlowProcessor::getFlowId)); }//from ww w . java 2s.c o m return Collections.emptyMap(); }
From source file:com.thinkbiganalytics.feedmgr.nifi.cache.NifiFlowCacheImpl.java
private Map<String, List<NifiFlowProcessor>> toProcessorIdProcessorMap( Collection<NifiFlowProcessor> processors) { if (processors != null && !processors.isEmpty()) { return processors.stream().collect(Collectors.groupingBy(NifiFlowProcessor::getId)); }//from w ww . ja v a2 s .c o m return new HashMap<>(); }
From source file:com.ggvaidya.scinames.dataset.BinomialChangesSceneController.java
private AdditionalData<String, Map.Entry<String, String>> createSummaryAdditionalData() { List<Map.Entry<String, String>> summary = new ArrayList<>(); // Calculate some summary values. long numChanges = potentialChanges.size(); summary.add(new AbstractMap.SimpleEntry<String, String>("Number of binomial changes", String.valueOf(potentialChanges.size()))); // How many have a note? summary.add(new AbstractMap.SimpleEntry<String, String>("Number of changes with annotations", String.valueOf(potentialChanges.stream().filter(ch -> ch.getNote().isPresent()).count()))); // Calculate overall addition and deletion. // Summarize by types of change. Map<ChangeType, List<Change>> potentialChangesByType = potentialChanges.stream() .collect(Collectors.groupingBy(ch -> ch.getType())); summary.addAll(potentialChangesByType.keySet().stream().sorted() .map(type -> new AbstractMap.SimpleEntry<String, String>( "Number of binomial changes of type '" + type + "'", String.valueOf(potentialChangesByType.get(type).size()))) .collect(Collectors.toList())); // Summarize by reason. Map<String, Long> potentialChangesByReason = potentialChanges.stream() .map(pc -> pc.getType() + " because of " + calculateReason(pc)) .collect(Collectors.groupingBy(Function.identity(), Collectors.counting())); summary.addAll(potentialChangesByReason.keySet().stream().sorted() .map(reason -> new AbstractMap.SimpleEntry<String, String>( "Number of binomial changes for reason '" + reason + "'", potentialChangesByReason.get(reason).toString())) .collect(Collectors.toList())); // Make an additional data about it. Map<String, List<Map.Entry<String, String>>> map = new HashMap<>(); map.put("Summary", summary); List<TableColumn<Map.Entry<String, String>, String>> cols = new ArrayList<>(); TableColumn<Map.Entry<String, String>, String> colKey = new TableColumn<>("Property"); colKey.setCellValueFactory(cdf -> new ReadOnlyStringWrapper(cdf.getValue().getKey())); cols.add(colKey);// www. j a v a2 s . c om TableColumn<Map.Entry<String, String>, String> colValue = new TableColumn<>("Value"); colValue.setCellValueFactory(cdf -> new ReadOnlyStringWrapper(cdf.getValue().getValue())); cols.add(colValue); TableColumn<Map.Entry<String, String>, String> colPercent = new TableColumn<>("Percentage"); colPercent.setCellValueFactory(cdf -> { String result = "NA"; if (cdf.getValue() != null && cdf.getValue().getValue() != null && !cdf.getValue().getValue().equals("null")) { long longVal = Long.parseLong(cdf.getValue().getValue()); result = (longVal == 0) ? "NA" : (((double) longVal / numChanges * 100) + "%"); } return new ReadOnlyStringWrapper(result); }); cols.add(colPercent); return new AdditionalData<String, Entry<String, String>>("Summary", Arrays.asList("Summary"), map, cols); }
From source file:com.gs.collections.impl.parallel.SerialParallelLazyPerformanceTest.java
private double basicParallelLazyJava8GroupByPerformance(Set<String> iterable, String parameterType, java.util.function.Function<String, Alphagram> function, int count) { return TimeKeeper.logAverageMillisecondsToRun( "Parallel Java8 GroupBy using: " + parameterType + ' ' + this.getSimpleName(iterable) + " size: " + this.formatSizeOf(iterable) + " cores: ?", () -> Verify.assertNotEmpty(iterable.parallelStream().collect(Collectors.groupingBy(function))), count, WARM_UP_COUNT);/*www.j a va2 s. c o m*/ }
From source file:alfio.manager.TicketReservationManager.java
@Transactional void cleanupExpiredReservations(Date expirationDate) { List<String> expiredReservationIds = ticketReservationRepository.findExpiredReservation(expirationDate); if (expiredReservationIds.isEmpty()) { return;/*from w ww . ja v a 2 s . c o m*/ } specialPriceRepository.resetToFreeAndCleanupForReservation(expiredReservationIds); ticketRepository.resetCategoryIdForUnboundedCategories(expiredReservationIds); ticketFieldRepository.deleteAllValuesForReservations(expiredReservationIds); ticketRepository.freeFromReservation(expiredReservationIds); waitingQueueManager.cleanExpiredReservations(expiredReservationIds); // Map<Integer, List<ReservationIdAndEventId>> reservationIdsByEvent = ticketReservationRepository .getReservationIdAndEventId(expiredReservationIds).stream() .collect(Collectors.groupingBy(ReservationIdAndEventId::getEventId)); reservationIdsByEvent.forEach((eventId, reservations) -> { Event event = eventRepository.findById(eventId); extensionManager.handleReservationsExpiredForEvent(event, reservations.stream().map(ReservationIdAndEventId::getId).collect(Collectors.toList())); }); // ticketReservationRepository.remove(expiredReservationIds); }
From source file:alfio.manager.TicketReservationManager.java
/** * Finds all the reservations that are "stuck" in payment status. * This could happen when there is an internal error after a successful credit card charge. * * @param expirationDate expiration date *///w ww . j ava2 s .c o m public void markExpiredInPaymentReservationAsStuck(Date expirationDate) { List<String> stuckReservations = ticketReservationRepository.findStuckReservations(expirationDate); if (!stuckReservations.isEmpty()) { ticketReservationRepository.updateReservationsStatus(stuckReservations, TicketReservationStatus.STUCK.name()); Map<Integer, List<ReservationIdAndEventId>> reservationsGroupedByEvent = ticketReservationRepository .getReservationIdAndEventId(stuckReservations).stream() .collect(Collectors.groupingBy(ReservationIdAndEventId::getEventId)); reservationsGroupedByEvent.forEach((eventId, reservationIds) -> { Event event = eventRepository.findById(eventId); Organization organization = organizationRepository.getById(event.getOrganizationId()); notificationManager.sendSimpleEmail(event, organization.getEmail(), STUCK_TICKETS_SUBJECT, () -> String.format(STUCK_TICKETS_MSG, event.getShortName())); extensionManager.handleStuckReservations(event, reservationIds.stream().map(ReservationIdAndEventId::getId).collect(toList())); }); } }
From source file:alfio.manager.TicketReservationManager.java
List<SummaryRow> extractSummary(String reservationId, PriceContainer.VatStatus reservationVatStatus,
Event event, Locale locale, PromoCodeDiscount promoCodeDiscount, TotalPrice reservationCost) {
List<SummaryRow> summary = new ArrayList<>();
List<TicketPriceContainer> tickets = ticketRepository.findTicketsInReservation(reservationId).stream()
.map(t -> TicketPriceContainer.from(t, reservationVatStatus, event, promoCodeDiscount))
.collect(toList());//w w w . ja v a 2s . c om
tickets.stream().collect(Collectors.groupingBy(TicketPriceContainer::getCategoryId))
.forEach((categoryId, ticketsByCategory) -> {
final int subTotal = ticketsByCategory.stream()
.mapToInt(TicketPriceContainer::getSummarySrcPriceCts).sum();
final int subTotalBeforeVat = ticketsByCategory.stream()
.mapToInt(TicketPriceContainer::getSummaryPriceBeforeVatCts).sum();
TicketPriceContainer firstTicket = ticketsByCategory.get(0);
final int ticketPriceCts = firstTicket.getSummarySrcPriceCts();
final int priceBeforeVat = firstTicket.getSummaryPriceBeforeVatCts();
String categoryName = ticketCategoryRepository.getByIdAndActive(categoryId, event.getId())
.getName();
summary.add(new SummaryRow(categoryName, formatCents(ticketPriceCts),
formatCents(priceBeforeVat), ticketsByCategory.size(), formatCents(subTotal),
formatCents(subTotalBeforeVat), subTotal, SummaryRow.SummaryType.TICKET));
});
summary.addAll(collectAdditionalServiceItems(reservationId, event).map(entry -> {
String language = locale.getLanguage();
AdditionalServiceText title = additionalServiceTextRepository.findBestMatchByLocaleAndType(
entry.getKey().getId(), language, AdditionalServiceText.TextType.TITLE);
if (!title.getLocale().equals(language) || title.getId() == -1) {
log.debug("additional service {}: title not found for locale {}", title.getAdditionalServiceId(),
language);
}
List<AdditionalServiceItemPriceContainer> prices = generateASIPriceContainers(event, null).apply(entry)
.collect(toList());
AdditionalServiceItemPriceContainer first = prices.get(0);
final int subtotal = prices.stream().mapToInt(AdditionalServiceItemPriceContainer::getSrcPriceCts)
.sum();
return new SummaryRow(title.getValue(), formatCents(first.getSrcPriceCts()),
formatCents(first.getSrcPriceCts()), prices.size(), formatCents(subtotal),
formatCents(subtotal), subtotal, SummaryRow.SummaryType.ADDITIONAL_SERVICE);
}).collect(Collectors.toList()));
Optional.ofNullable(promoCodeDiscount).ifPresent(promo -> {
String formattedSingleAmount = "-"
+ (promo.getDiscountType() == DiscountType.FIXED_AMOUNT ? formatCents(promo.getDiscountAmount())
: (promo.getDiscountAmount() + "%"));
summary.add(
new SummaryRow(formatPromoCode(promo, ticketRepository.findTicketsInReservation(reservationId)),
formattedSingleAmount, formattedSingleAmount, reservationCost.getDiscountAppliedCount(),
formatCents(reservationCost.getDiscount()), formatCents(reservationCost.getDiscount()),
reservationCost.getDiscount(), SummaryRow.SummaryType.PROMOTION_CODE));
});
return summary;
}
From source file:alfio.manager.TicketReservationManager.java
private Stream<Pair<AdditionalService, List<AdditionalServiceItem>>> collectAdditionalServiceItems( String reservationId, Event event) { return additionalServiceItemRepository.findByReservationUuid(reservationId).stream() .collect(Collectors.groupingBy(AdditionalServiceItem::getAdditionalServiceId)).entrySet().stream() .map(entry -> Pair.of(additionalServiceRepository.getById(entry.getKey(), event.getId()), entry.getValue()));//from w w w .j a va 2s. co m }