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

List of usage examples for com.google.common.collect Iterables find

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Introduction

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

Prototype

@Nullable
public static <T> T find(Iterable<? extends T> iterable, Predicate<? super T> predicate,
        @Nullable T defaultValue)

Source Link

Document

Returns the first element in iterable that satisfies the given predicate, or defaultValue if none found.

Usage

From source file:ru.ksu.niimm.cll.mocassin.crawl.arxiv.ArxivDAOFacadeImpl.java

/**
 * {@inheritDoc}//from  ww  w.  j  ava  2 s .  c  om
 */
@Override
public InputStream loadPDF(ArticleMetadata metadata) {
    Link pdfLink = Iterables.find(metadata.getLinks(), new PdfLinkPredicate(), null);
    if (pdfLink == null || (pdfLink.getHref() == null || pdfLink.getHref().length() == 0)) {
        logger.warn("Article metadata with id='{}' doesn't include PDF link; empty stream will be returned",
                metadata.getId());
        return null;
    }
    InputStream inputStream = null;
    try {
        URL sourceUrl = new URL(pdfLink.getHref());
        inputStream = loadFromUrl(sourceUrl, PDF_CONTENT_TYPE);
    } catch (MalformedURLException e) {
        logger.error("Failed to prepare source URL from: {}", pdfLink.getHref(), e);
    } catch (IOException e) {
        logger.error("Failed to get the source of {}", metadata.getId(), e);
    }
    if (isUseProxy) {
        Authenticator.setDefault(null);
    }
    return inputStream;
}

From source file:org.onos.yangtools.yang.data.impl.codec.SchemaTracker.java

private Optional<SchemaNode> tryFindGroupings(final SchemaContext ctx, final QName qname) {
    return Optional
            .<SchemaNode>fromNullable(Iterables.find(ctx.getGroupings(), new SchemaNodePredicate(qname), null));
}

From source file:org.eclipse.incquery.runtime.api.impl.BaseQuerySpecification.java

@Override
public PAnnotation getFirstAnnotationByName(String annotationName) {
    return Iterables.find(annotations, new AnnotationNameTester(annotationName), null);
}

From source file:org.gradle.plugins.ide.idea.internal.IdeaScalaConfigurer.java

private static Map<String, ProjectLibrary> resolveScalaCompilerLibraries(Collection<Project> scalaProjects,
        boolean useScalaSdk) {
    Map<String, ProjectLibrary> scalaCompilerLibraries = Maps.newHashMap();
    for (Project scalaProject : scalaProjects) {
        IdeaModule ideaModule = scalaProject.getExtensions().getByType(IdeaModel.class).getModule();
        Iterable<File> files = getIdeaModuleLibraryDependenciesAsFiles(ideaModule);
        ProjectLibrary library = createScalaSdkLibrary(scalaProject, files, useScalaSdk, ideaModule);
        if (library != null) {
            ProjectLibrary duplicate = Iterables.find(scalaCompilerLibraries.values(),
                    Predicates.equalTo(library), null);
            scalaCompilerLibraries.put(scalaProject.getPath(), duplicate == null ? library : duplicate);
        }//from  ww w .j av a 2  s .  co m
    }
    return scalaCompilerLibraries;
}

From source file:org.onos.yangtools.yang.data.impl.codec.SchemaTracker.java

private Optional<SchemaNode> tryFindRpc(final SchemaContext ctx, final QName qname) {
    return Optional.<SchemaNode>fromNullable(
            Iterables.find(ctx.getOperations(), new SchemaNodePredicate(qname), null));
}

From source file:org.jclouds.location.suppliers.all.ZoneToRegionToProviderOrJustProvider.java

private Map<String, Location> setParentOfZoneToRegionOrProvider(Set<String> zoneIds,
        Set<? extends Location> locations) {
    // mutable, so that we can query current state when adding. safe as its temporary
    Map<String, Location> zoneIdToParent = Maps.newLinkedHashMap();

    Location provider = Iterables.find(locations, LocationPredicates.isProvider(), null);
    if (locations.size() == 1 && provider != null) {
        for (String zone : zoneIds)
            zoneIdToParent.put(zone, provider);
    } else {/*from   www. ja  va2  s.c o m*/
        // note that we only call regionIdToZoneIdsSupplier if there are region locations present
        // they cannot be, if the above is true
        Map<String, Supplier<Set<String>>> regionIdToZoneIds = regionIdToZoneIdsSupplier.get();
        for (Location region : Iterables.filter(locations, LocationPredicates.isRegion())) {
            provider = region.getParent();
            if (regionIdToZoneIds.containsKey(region.getId())) {
                for (String zoneId : regionIdToZoneIds.get(region.getId()).get())
                    zoneIdToParent.put(zoneId, region);
            } else {
                logger.debug("no zones configured for region: %s", region);
            }
        }
    }

    SetView<String> orphans = Sets.difference(zoneIds, zoneIdToParent.keySet());
    if (orphans.size() > 0) {
        // any unmatched zones should have their parents set to the provider
        checkState(provider != null,
                "cannot configure zones %s as we need a parent, and the only available location [%s] is not a provider",
                zoneIds, locations);
        for (String orphanedZoneId : orphans)
            zoneIdToParent.put(orphanedZoneId, provider);
    }

    checkState(zoneIdToParent.keySet().containsAll(zoneIds), "orphaned zones: %s ",
            Sets.difference(zoneIds, zoneIdToParent.keySet()));
    return zoneIdToParent;
}

From source file:ru.ksu.niimm.cll.mocassin.frontend.server.QueryServiceImpl.java

private List<ResultDescription> convertToResultDescriptions(List<ArticleMetadata> ontologyElements) {
    List<ResultDescription> resultDescriptions = new ArrayList<ResultDescription>();
    for (ArticleMetadata ontologyElement : ontologyElements) {
        ResultDescription rd = new ResultDescription();
        rd.setDocumentUri(ontologyElement.getId());
        rd.setViewerUri(ontologyElement.getCurrentSegmentUri() != null ? ontologyElement.getCurrentSegmentUri()
                : ontologyElement.getId());
        List<Link> links = ontologyElement.getLinks();

        Link pdfLink = Iterables.find(links, new Link.PdfLinkPredicate(), Link.nullPdfLink());
        rd.setPdfUri(pdfLink.getHref());
        Set<Author> authors = ontologyElement.getAuthors();
        List<String> authorNames = new ArrayList<String>();
        for (Author author : authors) {
            authorNames.add(author.getName());
        }/*from  w  w w.ja  va 2s .com*/
        rd.setAuthors(authorNames);
        String articleTitle = ontologyElement.getCurrentSegmentTitle() != null
                ? String.format("%s (%s)", ontologyElement.getTitle(), ontologyElement.getCurrentSegmentTitle())
                : ontologyElement.getTitle();
        rd.setTitle(articleTitle);
        resultDescriptions.add(rd);
    }
    return resultDescriptions;
}

From source file:com.netflix.exhibitor.core.config.EncodedConfigParser.java

/**
 * Return the value for the given field or null
 *
 * @param field field to check//from   w  ww .  jav  a  2  s  . c  o  m
 * @return value or null
 */
public String getValue(final String field) {
    FieldValue fieldValue = Iterables.find(fieldValues, new Predicate<FieldValue>() {
        @Override
        public boolean apply(FieldValue fv) {
            return fv.getField().equals(field);
        }
    }, null);
    return (fieldValue != null) ? fieldValue.getValue() : null;
}

From source file:com.slimgears.slimsignal.apt.MetaFields.java

private static <P extends PropertyInfo> P findAnnotatedField(Iterable<? extends P> fields,
        final Class annotationClass) {
    return (P) Iterables.find(fields, input -> input.getAnnotation(annotationClass) != null, null);
}

From source file:org.onos.yangtools.yang.data.impl.codec.SchemaTracker.java

private Optional<SchemaNode> tryFindNotification(final SchemaContext ctx, final QName qname) {
    return Optional.<SchemaNode>fromNullable(
            Iterables.find(ctx.getNotifications(), new SchemaNodePredicate(qname), null));
}