Example usage for java.util Collections singleton

Introduction

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

Prototype

public static <T> Set<T> singleton(T o)

Source Link

Document

Returns an immutable set containing only the specified object.

Usage

From source file:org.jboss.spring.factory.NamedXmlBeanFactory.java

private void initializeNames(Resource resource) {
    try {//from   www. j av  a 2 s.  com
        XPath xPath = XPathFactory.newInstance().newXPath();
        xPath.setNamespaceContext(new NamespaceContext() {
            @Override
            public String getNamespaceURI(String prefix) {
                return "http://www.springframework.org/schema/beans";
            }

            @Override
            public String getPrefix(String namespaceURI) {
                return "beans";
            }

            @Override
            public Iterator getPrefixes(String namespaceURI) {
                return Collections.singleton("beans").iterator();
            }
        });
        String expression = "/beans:beans/beans:description";
        InputSource inputSource = new InputSource(resource.getInputStream());
        String description = xPath.evaluate(expression, inputSource);
        if (description != null) {
            Matcher bfm = Pattern.compile(Constants.BEAN_FACTORY_ELEMENT).matcher(description);
            if (bfm.find()) {
                this.name = bfm.group(1);
            }
            Matcher pbfm = Pattern.compile(Constants.PARENT_BEAN_FACTORY_ELEMENT).matcher(description);
            if (pbfm.find()) {
                String parentName = pbfm.group(1);
                try {
                    this.setParentBeanFactory((BeanFactory) Util.lookup(parentName, BeanFactory.class));
                } catch (Exception e) {
                    throw new BeanDefinitionStoreException(
                            "Failure during parent bean factory JNDI lookup: " + parentName, e);
                }
            }
            Matcher inst = Pattern.compile(Constants.INSTANTIATION_ELEMENT).matcher(description);
            if (inst.find()) {
                instantiate = Boolean.parseBoolean(inst.group(1));
            }
        }
        if (this.name == null || "".equals(StringUtils.trimAllWhitespace(this.name))) {
            this.name = this.defaultName;
        }
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

From source file:com.couchbase.trombi.TrombinoscopeApplication.java

@Bean
CommandLineRunner userCreation(CoworkerRepository repo) {
    return args -> {
        Map<String, String> snowIm = new HashMap<>();
        snowIm.put("twitter", "@therealjohnsnowofficial");
        snowIm.put("hipchat", "snow");
        Coworker sample1 = Coworker.builder().id("coworker1").name("John Snow").description("Knows Nothing")
                .mainLocation(new Location("Winterfell", "My former home", -12, -10, 21))
                .lastCheckin(new Location("Paris", "Visiting some friends", +2, 98, 201)).imHandles(snowIm)
                .skills(Collections.singleton("fight")).team("stark").build();

        Coworker sample1b = Coworker.builder().id("coworker3").name("Arya Stark")
                .description("A Girl Is No One").mainLocation(new Location("Winterfell", "Home", -12, -10, 21))
                .skills(Collections.singleton("fight")).team("stark").build();

        Map<String, String> simonIm = new HashMap<>();
        simonIm.put("twitter", "@simonbasle");
        simonIm.put("hipchat", "simonbasle");
        Coworker sample2 = Coworker.builder().id("coworker2").name("Simon Basl")
                .description("Sometimes Coder")
                .mainLocation(new Location("Paris", "That's where I live", +2, 100, 200)).imHandles(simonIm)
                .skills(Collections.singleton("code")).team("couchbase").build();

        repo.save(Arrays.asList(sample1, sample1b, sample2));

        repo.findOne("coworker2");
    };//from  w  w w . j av  a 2s. co m
}

From source file:com.hortonworks.streamline.streams.runtime.rule.sql.SqlBasicExprScriptTest.java

@Test
public void testBasic() throws Exception {
    Condition condition = new Condition();
    Expression x = new FieldExpression(Schema.Field.of("x", Schema.Type.INTEGER));
    condition.setExpression(new BinaryExpression(Operator.EQUALS, x, new Literal("100")));
    sqlScript = new SqlScript(new StormSqlExpression(condition), new SqlEngine(),
            new SqlScript.CorrelatedValuesToStreamlineEventConverter(Collections.singletonList("x")));

    Map<String, Object> kv = new HashMap<>();
    kv.put("x", 100);
    StreamlineEvent event = StreamlineEventImpl.builder().fieldsAndValues(kv).dataSourceId("1").build();
    Collection<StreamlineEvent> result = sqlScript.evaluate(event);
    Assert.assertEquals(1, result.size());

    StreamlineEvent resultEvent = result.iterator().next();
    Assert.assertTrue(EventCorrelationInjector.containsParentIds(resultEvent));
    Assert.assertEquals(Collections.singleton(event.getId()),
            EventCorrelationInjector.getParentIds(resultEvent));
}

From source file:com.devicehive.handler.command.CommandSubscribeRequestHandler.java

private Collection<DeviceCommand> findCommands(String device, Collection<String> names, Date timestamp) {
    return Optional.ofNullable(timestamp).map(t -> hazelcastService.find(null, names,
            Collections.singleton(device), LIMIT, t, null, null, DeviceCommand.class))
            .orElse(Collections.emptyList());
}

From source file:org.cloudfoundry.identity.uaa.user.JdbcUaaUserDatabaseTests.java

@Before
public void initializeDb() throws Exception {

    template = new JdbcTemplate(dataSource);

    db = new JdbcUaaUserDatabase(template);
    db.setDefaultAuthorities(Collections.singleton("uaa.user"));

    TestUtils.assertNoSuchUser(template, "id", JOE_ID);
    TestUtils.assertNoSuchUser(template, "id", MABEL_ID);
    TestUtils.assertNoSuchUser(template, "userName", "jo@foo.com");

    addUser(JOE_ID, "Joe", "joespassword");
    addUser(MABEL_ID, "mabel", "mabelspassword");

}

From source file:com.opengamma.engine.test.MockFunction.java

public void addRequirement(ValueRequirement requirement) {
    addRequirements(Collections.singleton(requirement));
}

From source file:com.opengamma.financial.analytics.PositionOrTradeScalingFunction.java

@Override
public Set<ValueRequirement> getRequirements(final FunctionCompilationContext context,
        final ComputationTarget target, final ValueRequirement desiredValue) {
    final Security security = target.getPositionOrTrade().getSecurity();
    final ValueRequirement requirement = new ValueRequirement(_requirementName, ComputationTargetType.SECURITY,
            security.getUniqueId(), desiredValue.getConstraints().withoutAny(ValuePropertyNames.FUNCTION));
    return Collections.singleton(requirement);
}

From source file:org.mascherl.example.service.SignUpService.java

@Transactional
public void signUp(SignUpRequest signUpRequest) {
    boolean userExists = !em.createQuery("select u.uuid from UserEntity u where u.email = :email")
            .setParameter("email", signUpRequest.getEmail()).getResultList().isEmpty();
    if (userExists) {
        throw new IllegalStateException("User with given email already exists");
    }//from   w  w  w  .j  a va 2 s .c  o  m

    UserEntity entity = new UserEntity();
    entity.setFirstName(signUpRequest.getFirstName());
    entity.setLastName(signUpRequest.getLastName());
    entity.setEmail(signUpRequest.getEmail());
    entity.setPasswordHash(sha256(signUpRequest.getPassword()));
    entity.setDateOfBirth(signUpRequest.getDateOfBirth());
    entity.setCountry(signUpRequest.getCountry());
    entity.setState(signUpRequest.getState());
    em.persist(entity);
    em.flush();

    sendMailService.sendMailFromSystem(new Mail(new MailAddress("webmail@mascherl.org"),
            Collections.singleton(new MailAddress(signUpRequest.getEmail())), null, null,
            "Welcome to Mascherl WebMail",
            "Hello " + signUpRequest.getFirstName() + " " + signUpRequest.getLastName() + "!\n" + "\n"
                    + "Your e-mail address is: " + signUpRequest.getEmail() + "\n" + "\n"
                    + "We wish you a lot of fun with Mascherl WebMail.\n" + "\n" + "Cheers,\n"
                    + "Your Mascherl WebMail team.\n"));
}

From source file:com.bennavetta.appsite.util.DatastoreConfig.java

protected Object getPropertyDirect(String key) {
    Key k = KeyFactory.createKey(ENTITY, key);
    return datastore.get(Collections.singleton(k)).get(k).getProperty(VALUE_PROPERTY);
}