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

Introduction

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

Prototype

@Nullable
public static <T> T getFirst(Iterable<? extends T> iterable, @Nullable T defaultValue)

Source Link

Document

Returns the first element in iterable or defaultValue if the iterable is empty.

Usage

From source file:com.google.gerrit.server.config.PluginConfig.java

PluginConfig withInheritance(ProjectState.Factory projectStateFactory) {
    if (projectConfig == null) {
        return this;
    }//from  www .  ja  v a 2s . co m

    ProjectState state = projectStateFactory.create(projectConfig);
    ProjectState parent = Iterables.getFirst(state.parents(), null);
    if (parent != null) {
        PluginConfig parentPluginConfig = parent.getConfig().getPluginConfig(pluginName)
                .withInheritance(projectStateFactory);
        Set<String> allNames = cfg.getNames(PLUGIN, pluginName);
        cfg = copyConfig(cfg);
        for (String name : parentPluginConfig.cfg.getNames(PLUGIN, pluginName)) {
            if (!allNames.contains(name)) {
                cfg.setStringList(PLUGIN, pluginName, name,
                        Arrays.asList(parentPluginConfig.cfg.getStringList(PLUGIN, pluginName, name)));
            }
        }
    }
    return this;
}

From source file:de.lgblaumeiser.ptm.analysis.analyzer.HourComputer.java

@Override
public Collection<Collection<Object>> analyze(final Collection<String> parameter) {
    YearMonth requestedMonth = YearMonth.now();
    if (parameter.size() > 0) {
        requestedMonth = YearMonth.parse(Iterables.get(parameter, 0));
    }//from w w w.  jav  a 2 s. co  m
    Collection<Collection<Object>> result = Lists.newArrayList();
    result.add(Arrays.asList("Work Day", "Starttime", "Endtime", "Presence", "Worktime", "Breaktime",
            "Overtime", "Comment"));
    Duration overtime = Duration.ZERO;
    LocalDate currentday = requestedMonth.atDay(1);
    while (!currentday.isAfter(requestedMonth.atEndOfMonth())) {
        Collection<Booking> currentBookings = getBookingsForDay(currentday);
        if (hasCompleteBookings(currentBookings)) {
            String day = currentday.format(DateTimeFormatter.ISO_LOCAL_DATE);
            LocalTime starttime = Iterables.getFirst(currentBookings, null).getStarttime();
            LocalTime endtime = Iterables.getLast(currentBookings).getEndtime();
            Duration presence = calculatePresence(starttime, endtime);
            Duration worktime = calculateWorktime(currentBookings);
            Duration breaktime = calculateBreaktime(presence, worktime);
            Duration currentOvertime = calculateOvertime(worktime, currentday);
            overtime = overtime.plus(currentOvertime);
            result.add(Arrays.asList(day, starttime.format(DateTimeFormatter.ofPattern("HH:mm")),
                    endtime.format(DateTimeFormatter.ofPattern("HH:mm")), formatDuration(presence),
                    formatDuration(worktime), formatDuration(breaktime), formatDuration(overtime),
                    validate(worktime, breaktime)));
        }
        currentday = currentday.plusDays(1);
    }
    return result;
}

From source file:jp.xet.uncommons.wicket.model.FirstElementModel.java

@Override
protected T load() {
    Iterable<T> iterable = collectionModel.getObject();
    try {/*from w  w w  .ja va 2s  .c  om*/
        return Iterables.getFirst(iterable, null);
    } catch (NoSuchElementException e) {
        return null;
    }
}

From source file:org.eclipse.recommenders.utils.rcp.ast.MethodDeclarationFinder.java

public Optional<MethodDeclaration> getMatch() {
    return fromNullable(Iterables.getFirst(matches, null));
}

From source file:se.curity.examples.oauth.FilterHelper.java

private static Optional<String> getSingleValue(String name, Multimap<String, String> initParams) {
    Collection<String> values = initParams.get(name);
    if (values.size() > 1) {
        throw new IllegalStateException(String.format("More than one value for parameter [%s]", name));
    }/*from ww  w. j a v  a2 s . c  o  m*/
    return Optional.ofNullable(Iterables.getFirst(values, null));
}

From source file:org.jclouds.virtualbox.functions.AttachNATAdapterToMachineIfNotAlreadyExists.java

@Override
public Void apply(IMachine machine) {
    INetworkAdapter iNetworkAdapter = machine.getNetworkAdapter(networkInterfaceCard.getSlot());
    // clean up previously set rules
    for (String redirectRule : iNetworkAdapter.getNATEngine().getRedirects()) {
        String redirectRuleName = Iterables.getFirst(Splitter.on(",").split(redirectRule), null);
        if (redirectRuleName != null) {
            iNetworkAdapter.getNATEngine().removeRedirect(redirectRuleName);
        }//from  ww  w  .j a  v a2s  . c om
    }
    iNetworkAdapter.setAttachmentType(NAT);
    for (RedirectRule rule : networkInterfaceCard.getNetworkAdapter().getRedirectRules()) {
        try {
            String ruleName = String.format("%s@%s:%s->%s:%s", rule.getProtocol(), rule.getHost(),
                    rule.getHostPort(), rule.getGuest(), rule.getGuestPort());
            iNetworkAdapter.getNATEngine().addRedirect(ruleName, rule.getProtocol(), rule.getHost(),
                    rule.getHostPort(), rule.getGuest(), rule.getGuestPort());
        } catch (VBoxException e) {
            if (!e.getMessage().contains("already exists"))
                throw e;
        }
    }
    iNetworkAdapter.setEnabled(networkInterfaceCard.isEnabled());
    machine.saveSettings();
    return null;
}

From source file:iterator.AppleSupport.java

/** @see com.apple.eawt.OpenFilesHandler#openFiles(com.apple.eawt.AppEvent.OpenFilesEvent) */
@Override//  w  w w. ja v a  2 s .  co  m
public void openFiles(OpenFilesEvent e) {
    File open = Iterables.getFirst(e.getFiles(), null);
    IFS loaded = controller.load(open);
    loaded.setSize(controller.getSize());
    bus.post(loaded);
}

From source file:org.n52.svalbard.read.NillableReader.java

@Override
protected void begin() throws XMLStreamException, DecodingException {
    Optional<String> attr = attr(W3CConstants.QN_XSI_NIL);
    if (attr.isPresent() && attr.get().equals("true")) {
        List<QName> attributeNames = getPossibleNilReasonAttributes();
        Iterable<Optional<String>> attributes = attr(attributeNames);
        Iterable<String> reasons = Optional.presentInstances(attributes);
        this.nillable = Nillable.nil(Iterables.getFirst(reasons, null));
    } else {/*from  ww  w. ja va 2s  . c  o m*/
        this.nillable = Nillable.of(delegate(getDelegate()));
    }
}

From source file:com.google.idea.blaze.base.run.rulefinder.RuleFinder.java

@Nullable
public RuleIdeInfo firstRuleOfKinds(Project project, Kind... kinds) {
    return Iterables.getFirst(rulesOfKinds(project, kinds), null);
}

From source file:uk.co.flax.luwak.termextractor.RegexpNGramTermExtractor.java

@Override
public void extract(RegexpQuery query, List<QueryTerm> terms, List<Extractor<?>> extractors) {
    String regexp = parseOutRegexp(query.toString(""));
    String substr = Iterables.getFirst(byLengthOrdering.greatestOf(regexpSplitter.split(regexp), 1), "");
    terms.add(new QueryTerm(query.getField(), substr + ngramSuffix, QueryTerm.Type.WILDCARD));
}