Example usage for com.google.common.collect Iterables tryFind

Introduction

In this page you can find the example usage for com.google.common.collect Iterables tryFind.

Prototype

public static <T> Optional<T> tryFind(Iterable<T> iterable, Predicate<? super T> predicate)

Source Link

Document

Returns an Optional containing the first element in iterable that satisfies the given predicate, if such an element exists.

Usage

From source file:org.opendaylight.yangtools.yang.parser.stmt.rfc6020.effective.EffectiveStatementBase.java

protected final <S extends EffectiveStatement<?, ?>> S firstEffective(final Class<S> type) {
    final Optional<? extends EffectiveStatement<?, ?>> possible = Iterables.tryFind(substatements,
            Predicates.instanceOf(type));
    return possible.isPresent() ? type.cast(possible.get()) : null;
}

From source file:com.codebutler.farebot.transit.clipper.ClipperTransitFactory.java

@NonNull
private static List<ClipperTrip> parseTrips(@NonNull DesfireCard card) {
    StandardDesfireFile file = (StandardDesfireFile) card.getApplication(0x9011f2).getFile(0x0e);
    /*//from   ww w  .ja  va  2 s. c  om
     *  This file reads very much like a record file but it professes to
     *  be only a regular file.  As such, we'll need to extract the records
     *  manually.
     */
    byte[] data = file.getData().bytes();
    int pos = data.length - RECORD_LENGTH;
    List<ClipperTrip> result = new ArrayList<>();
    while (pos > 0) {
        byte[] slice = ByteUtils.byteArraySlice(data, pos, RECORD_LENGTH);
        final ClipperTrip trip = createTrip(slice);
        if (trip != null) {
            // Some transaction types are temporary -- remove previous trip with the same timestamp.
            ClipperTrip existingTrip = Iterables.tryFind(result, new Predicate<ClipperTrip>() {
                @Override
                public boolean apply(ClipperTrip otherTrip) {
                    return trip.getTimestamp() == otherTrip.getTimestamp();
                }
            }).orNull();
            if (existingTrip != null) {
                if (existingTrip.getExitTimestamp() != 0) {
                    // Old trip has exit timestamp, and is therefore better.
                    pos -= RECORD_LENGTH;
                    continue;
                } else {
                    result.remove(existingTrip);
                }
            }
            result.add(trip);
        }
        pos -= RECORD_LENGTH;
    }

    Collections.sort(result, new Trip.Comparator());

    return result;
}

From source file:ru.org.linux.comment.DeleteCommentController.java

private Optional<Comment> findNextComment(final Comment comment) throws MessageNotFoundException {
    Topic updatedTopic = messageDao.getById(comment.getTopicId());
    CommentList commentList = commentService.getCommentList(updatedTopic, false);

    return Iterables.tryFind(commentList.getList(), new Predicate<Comment>() {
        @Override//from   w  ww  .j ava2 s.  c om
        public boolean apply(Comment input) {
            return input.getId() >= comment.getId();
        }
    });
}

From source file:org.apache.brooklyn.entity.monitoring.zabbix.ZabbixServerImpl.java

public void added(Entity member) {
    synchronized (mutex) {
        Optional<Location> location = Iterables.tryFind(member.getLocations(),
                Predicates.instanceOf(SshMachineLocation.class));
        if (location.isPresent() && member.getAttribute(Startable.SERVICE_UP)) {
            SshMachineLocation machine = (SshMachineLocation) location.get();
            if (!entityLocations.containsKey(machine)) {
                entityLocations.put(machine, member);
                // Configure the Zabbix agent
                List<String> commands = ImmutableList.<String>builder().add("sed -i.bk 's/\\$HOSTNAME/"
                        + machine.getDisplayName() + "/' /etc/zabbix/zabbix_agentd.conf").add("zabbix_agentd")
                        .build();/*from w  ww .  j  a  va2  s. c om*/
                int result = machine.execCommands("configuring zabbix_agentd", commands);
                if (result == 0) {
                    log.info("zabbix_agentd configured on {} at {}", member, machine);
                } else {
                    log.warn("failed to configure zabbix_agentd on {}, status {}", machine, result);
                }
            }
        } else {
            log.warn("zabbix added({}) called but no location or service not started", member);
        }
    }
}

From source file:org.apache.brooklyn.enricher.stock.reducer.Reducer.java

@SuppressWarnings({ "unchecked", "rawtypes" })
@Override//from   w  w  w. jav a  2s. c om
public void setEntity(EntityLocal entity) {
    super.setEntity(entity);
    Preconditions.checkNotNull(getConfig(SOURCE_SENSORS), "source sensors");

    this.producer = getConfig(PRODUCER) == null ? entity : getConfig(PRODUCER);
    List<AttributeSensor<?>> sensorListTemp = Lists.newArrayList();

    for (Object sensorO : getConfig(SOURCE_SENSORS)) {
        AttributeSensor<?> sensor = Tasks.resolving(sensorO).as(AttributeSensor.class)
                .timeout(ValueResolver.REAL_QUICK_WAIT).context(producer).get();
        Optional<? extends Sensor<?>> foundSensor = Iterables.tryFind(sensorListTemp,
                SensorPredicates.nameEqualTo(sensor.getName()));

        if (!foundSensor.isPresent()) {
            sensorListTemp.add(sensor);
        }
    }

    String reducerName = config().get(REDUCER_FUNCTION_TRANSFORMATION);
    Function<Iterable<?>, ?> reducerFunction = (Function) config().get(REDUCER_FUNCTION);
    if (reducerFunction == null) {
        Map<String, ?> parameters = config().get(PARAMETERS);
        reducerFunction = createReducerFunction(reducerName, parameters);
    }

    this.reducerFunction = reducerFunction;
    Preconditions.checkState(sensorListTemp.size() > 0, "Nothing to reduce");

    for (Sensor<?> sensor : sensorListTemp) {
        subscribe(producer, sensor, this);
    }

    subscribedSensors = ImmutableList.copyOf(sensorListTemp);
}

From source file:org.apache.brooklyn.entity.nosql.redis.RedisStoreImpl.java

/**
 * Create a {@link Function} to retrieve a particular field value from a {@code redis-cli info}
 * command./*from   w w w  . j  av a 2  s .c o  m*/
 * 
 * @param field the info field to retrieve and convert
 * @return a new function that converts a {@link SshPollValue} to an {@link Integer}
 */
private static Function<SshPollValue, Integer> infoFunction(final String field) {
    return Functions.compose(new Function<String, Integer>() {
        @Override
        public Integer apply(@Nullable String input) {
            Optional<String> line = Iterables.tryFind(Splitter.on('\n').split(input),
                    Predicates.containsPattern(field + ":"));
            if (line.isPresent()) {
                String data = line.get().trim();
                int colon = data.indexOf(":");
                return Integer.parseInt(data.substring(colon + 1));
            } else {
                throw new IllegalStateException("Data for field " + field + " not found: " + input);
            }
        }
    }, SshValueFunctions.stdout());
}

From source file:com.keetip.versio.service.impl.VersioningServiceImpl.java

private Optional<Resource> getRevision(ResourceKey resourceKey, final Integer revision) {
    Collection<Resource> allRevisions = mResources.get(resourceKey);
    return Iterables.tryFind(allRevisions, new Predicate<Resource>() {
        public boolean apply(Resource resource) {
            return resource.getRevision().getRevisionNumber().equals(revision);
        }//from w  w w  .j a  v a 2  s  .  co  m
    });
}

From source file:org.killbill.billing.payment.core.sm.control.PaymentStateControlContext.java

public PaymentTransaction getCurrentTransaction() {
    if (result == null || result.getTransactions() == null) {
        return null;
    }/*from   w ww.ja v  a2s. c  om*/
    return Iterables.tryFind(result.getTransactions(), new Predicate<PaymentTransaction>() {
        @Override
        public boolean apply(final PaymentTransaction input) {
            final DefaultPaymentTransaction defaultPaymentTransaction = (DefaultPaymentTransaction) input;
            return defaultPaymentTransaction.getAttemptId() == null ? getAttemptId() == null
                    : defaultPaymentTransaction.getAttemptId().equals(getAttemptId());
        }
    }).orNull();
}

From source file:org.killbill.billing.beatrix.util.RefundChecker.java

private PaymentTransaction getRefundTransaction(final Payment payment) {
    return Iterables.tryFind(payment.getTransactions(), new Predicate<PaymentTransaction>() {
        @Override/*from   w  ww  .  j  a v a2  s . c  om*/
        public boolean apply(final PaymentTransaction input) {
            return input.getTransactionType() == TransactionType.REFUND;
        }
    }).get();
}

From source file:com.thinkbiganalytics.feedmgr.rest.model.FeedCategory.java

@JsonIgnore
public void removeRelatedFeed(final FeedMetadata feed) {
    FeedSummary match = Iterables.tryFind(feeds, new Predicate<FeedSummary>() {
        @Override//from   w  w  w.  j a v  a2  s  .com
        public boolean apply(FeedSummary metadata) {
            return feed.getFeedName().equalsIgnoreCase(metadata.getFeedName());
        }
    }).orNull();
    if (match != null) {
        getFeeds().remove(match);
    }
}