Example usage for java.util List stream

Introduction

In this page you can find the example usage for java.util List stream.

Prototype

default Stream<E> stream() 

Source Link

Document

Returns a sequential Stream with this collection as its source.

Usage

From source file:eu.mihosoft.vrl.v3d.Edge.java

public static List<Polygon> boundaryPathsWithHoles(List<Polygon> boundaryPaths) {

    List<Polygon> result = boundaryPaths.stream().map(p -> p.clone()).collect(Collectors.toList());

    List<List<Integer>> parents = new ArrayList<>();
    boolean[] isHole = new boolean[result.size()];

    for (int i = 0; i < result.size(); i++) {
        Polygon p1 = result.get(i);
        List<Integer> parentsOfI = new ArrayList<>();
        parents.add(parentsOfI);// ww  w.j ava 2s  .c  om
        for (int j = 0; j < result.size(); j++) {
            Polygon p2 = result.get(j);
            if (i != j) {
                if (p2.contains(p1)) {
                    parentsOfI.add(j);
                }
            }
        }
        isHole[i] = parentsOfI.size() % 2 != 0;
    }

    int[] parent = new int[result.size()];

    for (int i = 0; i < parent.length; i++) {
        parent[i] = -1;
    }

    for (int i = 0; i < parents.size(); i++) {
        List<Integer> par = parents.get(i);

        int max = 0;
        int maxIndex = 0;
        for (int pIndex : par) {

            int pSize = parents.get(pIndex).size();

            if (max < pSize) {
                max = pSize;
                maxIndex = pIndex;
            }
        }

        parent[i] = maxIndex;

        if (!isHole[maxIndex] && isHole[i]) {

            List<Polygon> holes;

            Optional<List<Polygon>> holesOpt = result.get(maxIndex).getStorage().getValue(KEY_POLYGON_HOLES);

            if (holesOpt.isPresent()) {
                holes = holesOpt.get();
            } else {
                holes = new ArrayList<>();
                result.get(maxIndex).getStorage().set(KEY_POLYGON_HOLES, holes);
            }

            holes.add(result.get(i));
        }
    }

    return result;
}

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From source file:ambroafb.general.StagesContainer.java

/**
 * The function removes only children stages of given stage from bidirectional map if they exists.
 * @param stage which children must be remove.
 *//*from ww w .jav a2s .  c  o  m*/
public static void removeOnlySubstagesFor(Stage stage) {
    String path = (String) bidmap.getKey(stage);
    List<String> pathes = (ArrayList<String>) bidmap.keySet().stream().filter(new Predicate() {
        @Override
        public boolean test(Object key) {
            return ((String) key).startsWith(path) && !((String) key).equals(path);
        }
    }).collect(Collectors.toList());
    //        bidmap.keySet().stream().forEach((key) -> {
    //            if (((String) key).startsWith(path) && !((String) key).equals(path)) {
    //                pathes.add((String) key);
    //            }
    //        });
    pathes.stream().forEach((currPath) -> {
        bidmap.remove((String) currPath);
    });
}

---

From source file:edu.ehu.galan.wiki2wordnet.wikipedia2wordnet.Mapper.java

private static void disambiguateUKB(HashMap<String, List<Wiki2WordnetMapping>> pUkbList,
        List<String> pDesambContext, String pFile, IDictionary pWordnet, HashMap<String, Integer> pMappings,
        String pUkbBinDir) {/*from  w ww.  jav a2  s. c o m*/
    logger.debug("Desambiguating Wornet synsets via UKB method");
    HashMap<String, List<String>> toDisam = new HashMap<>();
    logger.debug("Finding gold topics for disambiguation...");
    Function<String, String> contextSynsets = (String t) -> pWordnet
            .getSynset(new SynsetID(pMappings.get(t), POS.NOUN)).getWords().get(0).getLemma();
    List<String> context = pDesambContext.stream().map(contextSynsets).collect(toList());
    for (String topics21 : pUkbList.keySet()) {
        toDisam.put(pWordnet.getSynset(new SynsetID(pMappings.get(topics21), POS.NOUN)).getWords().get(0)
                .getLemma().toLowerCase(), context);
    }
    UKBUtils.prepareInput(toDisam, pFile);
    HashMap<String, Integer> synsets = UKBUtils.processUKB(pUkbBinDir, pFile);
    if (toDisam.size() == synsets.size()) {
        for (String topics21 : pUkbList.keySet()) {
            Integer inte = synsets.get(pWordnet.getSynset(new SynsetID(pMappings.get(topics21), POS.NOUN))
                    .getWords().get(0).getLemma().toLowerCase());
            pMappings.put(topics21, inte);
        }
        logger.debug("UKB disambiguation using WordNet finished");
    } else {
        logger.error("The number of topics to disambiguate via ukb must be the same than the ouput size");
    }

}

---

From source file:alfio.model.modification.EventModification.java

public static EventModification fromEvent(Event event, List<TicketCategory> ticketCategories,
        Optional<String> mapsApiKey) {
    final ZoneId zoneId = event.getZoneId();
    return new EventModification(event.getId(), event.getWebsiteUrl(), event.getTermsAndConditionsUrl(),
            event.getImageUrl(), event.getShortName(), event.getOrganizationId(), event.getLocation(),
            event.getDescription(), DateTimeModification.fromZonedDateTime(event.getBegin()),
            DateTimeModification.fromZonedDateTime(event.getEnd()), event.getRegularPrice(),
            event.getCurrency(), event.getAvailableSeats(), event.getVat(), event.isVatIncluded(),
            event.getAllowedPaymentProxies(),
            ticketCategories.stream().map(tc -> TicketCategoryModification.fromTicketCategory(tc, zoneId))
                    .collect(toList()),/*from www.ja v  a2  s  .c om*/
            event.isFreeOfCharge(), fromGeoData(Pair.of(event.getLatitude(), event.getLongitude()),
                    TimeZone.getTimeZone(zoneId), mapsApiKey));
}

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From source file:org.lambdamatic.internal.elasticsearch.codec.DocumentCodec.java

/**
 * Analyze the given domain type and returns the name of its field to use as the document id, if
 * available.//from   w  w  w .ja  v a 2 s.  c om
 * 
 * @param domainType the domain type to analyze
 * @return the <strong>single</strong> Java field annotated with {@link DocumentIdField}. If no field
 *         matches the criteria or more than one field is matches these criteria, a
 *         {@link MappingException} is thrown.
 */
public static Field getIdField(final Class<?> domainType) {
    final List<Pair<Field, DocumentIdField>> candidateFields = Stream.of(domainType.getDeclaredFields())
            .map(field -> new Pair<>(field, field.getAnnotation(DocumentIdField.class)))
            .filter(pair -> pair.getRight() != null).collect(Collectors.toList());
    if (candidateFields.isEmpty()) {
        throw new MappingException("No field is annotated with @{} in type {}", DocumentIdField.class.getName(),
                domainType);
    } else if (candidateFields.size() > 1) {
        final String fieldNames = candidateFields.stream().map(pair -> pair.getLeft().getName())
                .collect(Collectors.joining(", "));
        throw new MappingException("More than one field is annotated with @{} in type {}: {}",
                DocumentIdField.class.getName(), domainType, fieldNames);
    }
    return candidateFields.get(0).getLeft();
}

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From source file:com.thinkbiganalytics.nifi.rest.support.NifiPropertyUtil.java

/**
 * Groups the properties by their {@see NifiProperty#getIdKey}
 * @param properties the properties to inspect
 * @return a map with the property idKey (the processgroup+processorId+propertyKey, property)
 *//*from w  w w  . ja  v a2 s .com*/
public static Map<String, NifiProperty> groupPropertiesByIdKey(List<NifiProperty> properties) {
    Map<String, NifiProperty> map = new HashMap();
    if (properties != null) {
        map = properties.stream().collect(Collectors.toMap(p -> p.getIdKey(), p -> p));
    }
    return map;
}

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From source file:com.ikanow.aleph2.shared.crud.mongodb.services.MongoDbCrudService.java

/** Low level util to get the set of fields to collect for retrieval
 * @param field_list//from w  w  w.ja v a  2 s. c  om
 * @param include
 * @return
 */
private static BasicDBObject getFields(List<String> field_list, boolean include) {
    final BasicDBObject fields = new BasicDBObject(
            field_list.stream().collect(Collectors.toMap(f -> f, f -> include ? 1 : 0)));
    if (include && !fields.containsField(_ID))
        fields.put(_ID, 0); // (mongodb adds this by default)
    return fields;
}

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From source file:com.evolveum.midpoint.schema.util.PolicyRuleTypeUtil.java

public static <T extends PolicyActionType> List<T> filterActions(List<PolicyActionType> actions,
        Class<T> clazz) {//from  www  . j a  v  a2 s . c o  m
    //noinspection unchecked
    return actions.stream().filter(a -> clazz.isAssignableFrom(a.getClass())).map(a -> (T) a)
            .collect(Collectors.toList());
}

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From source file:controllers.nwbib.Lobid.java

/**
 * @param types The type uris associated with a resource
 * @param configKey The key from the config file (icons or labels)
 * @return The most specific of the passed types
 *///  ww  w.  j  a va2s. co  m
public static String selectType(List<String> types, String configKey) {
    if (configKey.isEmpty())
        return types.get(0);
    Logger.trace("Types: " + types);
    @SuppressWarnings("unchecked")
    List<Pair<String, Integer>> selected = types.stream().map(t -> {
        List<Object> vals = ((List<Object>) Application.CONFIG.getObject(configKey).unwrapped().get(t));
        if (vals == null)
            return Pair.of(t, 0);
        Integer specificity = (Integer) vals.get(2);
        return ((String) vals.get(0)).isEmpty() || ((String) vals.get(1)).isEmpty() //
                ? Pair.of("", specificity)
                : Pair.of(t, specificity);
    }).filter(t -> {
        return !t.getLeft().isEmpty();
    }).collect(Collectors.toList());
    Collections.sort(selected, (a, b) -> b.getRight().compareTo(a.getRight()));
    Logger.trace("Selected: " + selected);
    return selected.isEmpty() ? ""
            : selected.get(0).getLeft().contains("Miscellaneous") && selected.size() > 1
                    ? selected.get(1).getLeft()
                    : selected.get(0).getLeft();
}

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