Example usage for java.util Collections emptySet

Introduction

In this page you can find the example usage for java.util Collections emptySet.

Prototype

@SuppressWarnings("unchecked")
public static final <T> Set<T> emptySet()

Source Link

Document

Returns an empty set (immutable).

Usage

From source file:com.netflix.spinnaker.clouddriver.cloudfoundry.client.ServiceInstances.java

private Set<CloudFoundrySpace> vetSharingOfServicesArgumentsAndGetSharingSpaces(String sharedFromRegion,
        @Nullable String serviceInstanceName, @Nullable Set<String> sharingRegions, String gerund) {
    if (isBlank(serviceInstanceName)) {
        throw new CloudFoundryApiException("Please specify a name for the " + gerund + " service instance");
    }//from ww w  .  j  a v a2s  .co m
    sharingRegions = Optional.ofNullable(sharingRegions).orElse(Collections.emptySet());
    if (sharingRegions.size() == 0) {
        throw new CloudFoundryApiException(
                "Please specify a list of regions for " + gerund + " '" + serviceInstanceName + "'");
    }

    return sharingRegions.stream().map(r -> {
        if (sharedFromRegion.equals(r)) {
            throw new CloudFoundryApiException(
                    "Cannot specify 'org > space' as any of the " + gerund + " regions");
        }
        return orgs.findSpaceByRegion(r).orElseThrow(
                () -> new CloudFoundryApiException("Cannot find region '" + r + "' for " + gerund));
    }).collect(toSet());
}

From source file:com.yahoo.bard.webservice.data.metric.TemplateDruidQuery.java

/**
 * Transforms a N-pass query into a (N+1)-pass query. The original query is not mutated.
 *
 * @return nested query/* w w  w .  jav a2  s  . c o m*/
 */
public TemplateDruidQuery nest() {

    /*
     * each aggregation needs to be split into an inner & outer. Sometimes this involves transformation of the
     * aggregation type, name, or field name.
     */
    LinkedHashSet<Aggregation> innerAggregations = new LinkedHashSet<>();
    LinkedHashSet<Aggregation> outerAggregations = new LinkedHashSet<>();
    for (Aggregation agg : aggregations) {
        Pair<Aggregation, Aggregation> split = agg.nest();
        innerAggregations.add(split.getRight());
        outerAggregations.add(split.getLeft());
    }

    // Create the inner query.
    TemplateDruidQuery innerQuery;
    if (isNested()) {
        innerQuery = new TemplateDruidQuery(innerAggregations, Collections.emptySet(), nestedQuery, null);
    } else {
        innerQuery = new TemplateDruidQuery(innerAggregations, Collections.emptySet(), null, null);
    }

    // Create the outer query, floating the post aggregations upward
    return new TemplateDruidQuery(outerAggregations, postAggregations, innerQuery, timeGrain);
}

From source file:eu.trentorise.smartcampus.permissionprovider.model.ClientDetailsEntity.java

@Override
public Set<String> getAuthorizedGrantTypes() {
    if (authorizedGrantTypes != null) {
        return Utils.delimitedStringToSet(authorizedGrantTypes, ",");
    }/*from w w w. j a  va2  s  .  co  m*/
    return Collections.emptySet();
}

From source file:org.eclipse.virgo.ide.manifest.internal.core.BundleManifestManager.java

/**
 * {@inheritDoc}/*from   w  ww . j a  v  a 2  s  .  c  o  m*/
 */
public Set<String> getResolvedPackageImports(IJavaProject javaProject) {
    try {
        r.lock();
        if (packageImports.containsKey(javaProject)) {
            return packageImports.get(javaProject);
        }
        return Collections.emptySet();
    } finally {
        r.unlock();
    }
}

From source file:com.espertech.esper.epl.join.table.PropertySortedEventTable.java

public Set<EventBean> lookupLess(Object keyStart) {
    if (keyStart == null) {
        return Collections.emptySet();
    }//ww  w  . jav  a  2s.c  om
    keyStart = coerce(keyStart);
    return normalize(propertyIndex.headMap(keyStart));
}

From source file:org.grails.jpa.domain.JpaGrailsDomainClass.java

public Set<GrailsDomainClass> getSubClasses() {
    return Collections.emptySet();
}

From source file:com.xpn.xwiki.plugin.workspacesmanager.apps.WorkspaceApplicationManager.java

private Set<String> getAllWorkspacesApps(XWikiContext context) {
    if (allWorkspacesApps == null) {
        allWorkspacesApps = new HashSet<String>();
        try {//w  ww  .  j a v  a  2 s. c o m
            List<XWikiApplication> allApps = getXWikiApplicationManagerApi(context)
                    .getApplicationDocumentList();
            for (XWikiApplication app : allApps) {
                if (app.getObject("XWiki.XWSApplicationClass") != null) {
                    allWorkspacesApps.add(app.getAppName());
                }
            }
        } catch (XWikiException e) {
            allWorkspacesApps = null;
            return Collections.emptySet();
        }
    }
    return allWorkspacesApps;
}

From source file:ca.sqlpower.object.SPSimpleVariableResolver.java

public Collection<String> keySet(String namespace) {
    // Call the subclass hook.
    this.beforeKeyLookup(namespace);

    if (this.resolvesNamespace(namespace)) {
        if (this.namespace == null) {
            return this.variables.keySet();
        } else {/*from  w ww.ja  v  a2  s  . c o m*/
            Set<String> keys = new HashSet<String>();
            for (Object key : this.variables.keySet()) {
                keys.add(this.namespace.concat(NAMESPACE_DELIMITER).concat(key.toString()));
            }
            return keys;
        }
    }
    return Collections.emptySet();
}

From source file:com.ikanow.aleph2.graph.titan.services.TestTitanGraphService.java

@Test
public void test_onPublishOrUpdate() {

    final DataBucketBean bucket = BeanTemplateUtils.build(DataBucketBean.class)
            .with(DataBucketBean::full_name, "/test/validate/schema").done().get();

    // do nothing
    {//w  w  w. ja v  a2 s .c om
        CompletableFuture<Collection<BasicMessageBean>> ret_val = _mock_graph_db_service.onPublishOrUpdate(
                bucket, Optional.empty(), false, Collections.emptySet(), Collections.emptySet());

        assertEquals(Collections.emptyList(), ret_val.join());
    }
    // create all the indexes
    {
        CompletableFuture<Collection<BasicMessageBean>> ret_val = _mock_graph_db_service.onPublishOrUpdate(
                bucket, Optional.empty(), false, ImmutableSet.of(GraphSchemaBean.name), Collections.emptySet());

        assertEquals("" + ret_val.join().stream().map(b -> b.message()).collect(Collectors.joining(" // ")),
                Collections.emptyList(), ret_val.join());

        // But also now check the Titan indexes have all been created:

        final TitanManagement mgmt = _titan.openManagement();
        Stream<TitanGraphIndex> v_indexes = StreamUtils.stream(mgmt.getGraphIndexes(Vertex.class));
        Stream<TitanGraphIndex> e_indexes = StreamUtils.stream(mgmt.getGraphIndexes(Edge.class));
        assertEquals(4L, v_indexes.count());
        assertEquals(1L, e_indexes.count());
    }
    // rerun to check it all works second+ time round
    {
        CompletableFuture<Collection<BasicMessageBean>> ret_val = _mock_graph_db_service.onPublishOrUpdate(
                bucket, Optional.empty(), false, ImmutableSet.of(GraphSchemaBean.name), Collections.emptySet());

        assertEquals(
                "Should return no errors: "
                        + ret_val.join().stream().map(b -> b.message()).collect(Collectors.joining(";")),
                Collections.emptyList(), ret_val.join());

        // But also now check the Titan indexes have all been created:

        final TitanManagement mgmt = _titan.openManagement();
        Stream<TitanGraphIndex> v_indexes = StreamUtils.stream(mgmt.getGraphIndexes(Vertex.class));
        Stream<TitanGraphIndex> e_indexes = StreamUtils.stream(mgmt.getGraphIndexes(Edge.class));
        assertEquals(4L, v_indexes.count());
        assertEquals(1L, e_indexes.count());
    }
    // Error if specifying deduplication fields
    {
        final GraphSchemaBean graph_schema = BeanTemplateUtils.build(GraphSchemaBean.class)
                .with(GraphSchemaBean::custom_decomposition_configs, Arrays.asList())
                .with(GraphSchemaBean::deduplication_fields, Arrays.asList("nonempty")).done().get();

        final DataBucketBean dedup_fields_bucket = BeanTemplateUtils.build(DataBucketBean.class)
                .with(DataBucketBean::full_name, "/test/on/publish")
                .with(DataBucketBean::data_schema, BeanTemplateUtils.build(DataSchemaBean.class)
                        .with(DataSchemaBean::graph_schema, graph_schema).done().get())
                .done().get();

        CompletableFuture<Collection<BasicMessageBean>> ret_val = _mock_graph_db_service.onPublishOrUpdate(
                dedup_fields_bucket, Optional.empty(), false, ImmutableSet.of(GraphSchemaBean.name),
                Collections.emptySet());

        assertEquals(1, ret_val.join().size());
        assertEquals(1, ret_val.join().stream().filter(b -> !b.success()).count());
    }

    //(See also test_handleBucketDeletionRequest, for some coverage testing of onPublishOrUpdate)
}

From source file:fr.mby.portal.coreimpl.auth.DbPortalUserAuthenticationProvider.java

/**
 * @param auth//  w w w .java  2 s  . c  o m
 * @param user
 */
protected PortalUserAuthentication performAuthentication(final PortalUserAuthentication auth,
        final PortalUser portalUser) {
    PortalUserAuthentication resultingAuth = null;

    final String creds = (String) auth.getCredentials();
    if (portalUser.getPassword().equals(creds)) {
        Set<IRole> roles = null;
        try {
            roles = this.aclManager.retrievePrincipalRoles(auth);
        } catch (final PrincipalNotFoundException e) {
            roles = Collections.emptySet();
        }

        final IAuthorization authorizations = new BasicAuthorization(roles);
        resultingAuth = new PortalUserAuthentication(auth, authorizations);
    }

    return resultingAuth;
}