Example usage for java.util Collections emptySet

List of usage examples for java.util Collections emptySet

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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.griddynamics.jagger.diagnostics.reporting.ProfileReporter.java

@Override
public JRDataSource getDataSource(String testId) {
    if (!enable) {
        return new JRBeanCollectionDataSource(Collections.emptySet());
    }//from www . java 2  s. c o  m

    if (sysUnderTests == null) {
        sysUnderTests = loadData();
    }

    loadMonitoringMap();

    List<SysUnderTestDTO> data = sysUnderTests.get(testId);

    if (data == null) {
        data = sysUnderTests.get(relatedMonitoringTask(testId));
    }

    return new JRBeanCollectionDataSource(data);
}

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

/**
 * Returns the set of events that have the same property value as the given event.
 * @param keyStart to compare against/*from  ww w  .ja v  a2 s  .  com*/
 * @param keyEnd to compare against
 * @param allowRangeReversal indicate whether "a between 60 and 50" should return no results (equivalent to a>= X and a <=Y) or should return results (equivalent to 'between' and 'in'
 * @return set of events with property value, or null if none found (never returns zero-sized set)
 */
public Set<EventBean> lookupRange(Object keyStart, boolean includeStart, Object keyEnd, boolean includeEnd,
        boolean allowRangeReversal) {
    if (keyStart == null || keyEnd == null) {
        return Collections.emptySet();
    }
    keyStart = coerce(keyStart);
    keyEnd = coerce(keyEnd);
    SortedMap<Object, Set<EventBean>> submap;
    try {
        submap = propertyIndex.subMap(keyStart, includeStart, keyEnd, includeEnd);
    } catch (IllegalArgumentException ex) {
        if (allowRangeReversal) {
            submap = propertyIndex.subMap(keyEnd, includeStart, keyStart, includeEnd);
        } else {
            return Collections.emptySet();
        }
    }
    return normalize(submap);
}

From source file:com.vmware.identity.saml.idm.IdmPrincipalAttributesExtractor.java

@Override
public Set<PrincipalAttribute> getAttributes(PrincipalId principalId,
        Collection<PrincipalAttributeDefinition> attributeDefinitions)
        throws InvalidPrincipalException, SystemException {
    Validate.notNull(principalId);//from   ww  w .  j ava2 s .  c o m
    Validate.notNull(attributeDefinitions);

    Set<Attribute> attributeDefsIDM = new HashSet<Attribute>();
    for (PrincipalAttributeDefinition principalAttributeDefinition : attributeDefinitions) {
        attributeDefsIDM.add(convertToIDMAttributeDefinition(principalAttributeDefinition));
    }

    Collection<AttributeValuePair> attributes = Collections.emptySet();
    try {
        final long start = System.nanoTime();
        attributes = idmClient.getAttributeValues(tenantName, principalId, attributeDefsIDM);
        perfLog.trace("'idmClient.getAttributes' took {} ms.",
                TimeUnit.NANOSECONDS.toMillis(System.nanoTime() - start));
    } catch (com.vmware.identity.idm.InvalidPrincipalException e) {
        throw new InvalidPrincipalException(e);
    } catch (Exception e) {
        throw new SystemException(e);
    }

    Set<PrincipalAttribute> result = Collections.emptySet();
    if (attributes != null) {
        log.trace("{} attributes retrieved for {}", attributes.size(), principalId);
        result = new HashSet<PrincipalAttribute>(attributes.size());
        for (AttributeValuePair attr : attributes) {
            final Attribute attrDefinition = attr.getAttrDefinition();
            if (attrDefinition == null || attrDefinition.getName() == null
                    || attrDefinition.getNameFormat() == null) {
                throw new IllegalStateException("Missing or invalid attribute definition!");
            }
            List<String> values = attr.getValues();
            final PrincipalAttribute newAttr = new PrincipalAttribute(attrDefinition.getName(),
                    attrDefinition.getNameFormat(), attrDefinition.getFriendlyName(),
                    values == null || values.size() == 0 ? null : values.toArray(new String[values.size()]));
            result.add(newAttr);
            log.trace("An attribute {} retrieved for {}", newAttr, principalId);
        }
    }
    return result;
}

From source file:com.dianping.dpsf.jmx.DpsfResponsorMonitor.java

/**
 * get services at specified port/*  w  w w  .j av  a 2  s  . com*/
 * @param port
 * @return
 */
@MBeanMeta(ignore = true)
public Collection<String> servicesAtPort(int port) {
    RequestProcessor requestProcessor = getRequestProcessor(port);
    if (requestProcessor == null) {
        return Collections.emptySet();
    }
    ServiceRepository serviceRepository = requestProcessor.getServiceRepository();
    return serviceRepository.getServiceNames();
}

From source file:com.ge.predix.acs.service.policy.matcher.PolicyMatcherImplTest.java

/**
 * Tests matching a blanket policy to a request.
 *
 * @throws IOException//  w  w  w . j av  a  2 s.com
 *             on failure to load policy required for test.
 */
public void testMatchPolicyWithNoTarget() throws IOException {
    File file = getPolicyFileForTest(getMethodName());
    PolicySet policySet = PolicySets.loadFromFile(file);
    List<Policy> policies = policySet.getPolicies();

    PolicyMatchCandidate candidate = new PolicyMatchCandidate();
    candidate.setAction("GET");
    candidate.setResourceURI("/this/does/not/exist");
    candidate.setSubjectIdentifier("Edward R. Murrow");
    candidate.setSupplementalResourceAttributes(Collections.emptySet());
    candidate.setSupplementalSubjectAttributes(Collections.emptySet());
    List<MatchedPolicy> matchedPolicies = this.policyMatcher.match(candidate, policies);
    Assert.assertEquals(matchedPolicies.size(), 1);
    Assert.assertEquals(matchedPolicies.get(0).getPolicy(), policies.get(policies.size() - 1));
    Assert.assertNull(matchedPolicies.get(0).getPolicy().getTarget());
}

From source file:jp.realglobe.util.uploader.DirectoryUploader.java

/**
 * ??//ww w . j  a va 2  s.c o m
 * @param watchDirectoryPath ??
 * @param delay ?????
 *            ??????????
 * @param latestOnly ????????
 * @param targetExtensions ??
 * @param minSize ???
 * @param maxSize ??
 * @param urlBase ?? URL
 * @param userId ???? ID
 * @param name ??
 * @param id ? ID
 * @param token ?
 * @throws URISyntaxException URL ?????
 * @throws MalformedURLException URL ????
 */
public DirectoryUploader(final Path watchDirectoryPath, final long delay, final boolean latestOnly,
        final Collection<String> targetExtensions, final long minSize, final long maxSize, final String urlBase,
        final String userId, final String name, final String id, final String token)
        throws MalformedURLException, URISyntaxException {
    this.watchDirectoryPath = watchDirectoryPath;
    this.delay = delay;
    this.latestOnly = latestOnly;
    this.targetExtensions = (targetExtensions == null ? Collections.emptySet()
            : new HashSet<>(targetExtensions));
    this.minSize = minSize;
    this.maxSize = maxSize;
    this.userId = userId;
    this.id = id;
    this.name = name;
    this.tokenUrl = null;
    this.uploadUrl = (new URL(
            urlBase + Constants.URL_PATH_UPLOAD_PREFIX + "/" + this.id + Constants.URL_PATH_UPLOAD_SUFFIX))
                    .toURI();
    this.store = null;
    this.token = token;

    LOG.info("ID is " + this.id);
}

From source file:io.apicurio.hub.core.beans.ApiDesignResourceInfoTest.java

/**
 * Test method for {@link io.apicurio.hub.core.beans.ApiDesignResourceInfo#fromContent(java.lang.String)}.
 *///from   w  ww.j a  va  2  s. co m
@Test
public void testFromContent_20_Yaml() throws Exception {
    String content = IOUtils.toString(
            ApiDesignResourceInfoTest.class.getResourceAsStream("ApiDesignResourceInfoTest_2.0.yaml"));
    ApiDesignResourceInfo info = ApiDesignResourceInfo.fromContent(content);
    Assert.assertNotNull(info);
    Assert.assertEquals(FormatType.YAML, info.getFormat());
    Assert.assertEquals("Rate Limiter API", info.getName());
    Assert.assertEquals("A REST API used by clients to access the standalone Rate Limiter micro-service.",
            info.getDescription());
    Assert.assertEquals(Collections.emptySet(), info.getTags());
}

From source file:com.amalto.core.integrity.DefaultCheckDataSource.java

public Set<ReferenceFieldMetadata> getForeignKeyList(String concept, String dataModel) throws XtentisException {
    // Get FK(s) to check
    MetadataRepository mr = ServerContext.INSTANCE.get().getMetadataRepositoryAdmin().get(dataModel);
    TypeMetadata type = mr.getType(concept);
    if (type != null) {
        return mr.accept(new InboundReferences(type));
    } else {/*from  w w  w  .  j  a va  2s .  com*/
        logger.warn("Type '" + concept + "' does not exist anymore in data model '" + dataModel //$NON-NLS-1$//$NON-NLS-2$
                + "'. No integrity check will be performed."); //$NON-NLS-1$
        return Collections.emptySet();
    }
}

From source file:com.github.jknack.handlebars.JsonNodeValueResolver.java

@Override
public Set<Entry<String, Object>> propertySet(final Object context) {
    if (context instanceof ObjectNode) {
        ObjectNode node = (ObjectNode) context;
        Iterator<String> fieldNames = node.fieldNames();
        Map<String, Object> result = new LinkedHashMap<String, Object>();
        while (fieldNames.hasNext()) {
            String key = fieldNames.next();
            result.put(key, resolve(node, key));
        }/*from   w  w w .  j ava 2s  .  c  om*/
        return result.entrySet();
    }
    return Collections.emptySet();
}

From source file:com.wavemaker.runtime.data.util.DataServiceUtils.java

public static ObjectGraphTraversal getRelatedTraversal(ObjectGraphTraversal.ObjectVisitor visitor,
        final ObjectAccess objectAccess, final DataServiceMetaData metaData, final boolean skipToMany) {
    ObjectGraphTraversal.PropertyFactory pf = new ObjectGraphTraversal.PropertyFactory() {

        @Override/*from  www  .j  av a 2s .  c  o  m*/
        public Collection<String> getProperties(Object o, ObjectGraphTraversal.Context ctx) {
            Class<?> entityClass = getEntityClass(o.getClass());

            if (!metaData.isEntity(entityClass)) {
                return Collections.emptySet();
            }

            Collection<String> relPropNames = metaData.getRelPropertyNames(entityClass);

            if (!skipToMany) {
                return relPropNames;
            } else {
                Collection<String> rtn = new HashSet<String>();
                for (String propertyName : relPropNames) {
                    if (!isRelatedMany(objectAccess.getPropertyType(entityClass, propertyName))) {
                        rtn.add(propertyName);
                    }
                }
                return rtn;
            }
        }
    };

    return new ObjectGraphTraversal(pf, visitor, objectAccess);
}