Example usage for java.util Objects requireNonNull

Introduction

In this page you can find the example usage for java.util Objects requireNonNull.

Prototype

public static <T> T requireNonNull(T obj)

Source Link

Document

Checks that the specified object reference is not null .

Usage

From source file:it.unibo.alchemist.model.implementations.timedistributions.SAPEREExponentialTime.java

/**
 * @param rateEquation/* w  w  w  . j a v  a  2s .  c  o  m*/
 *            the rate equation
 * @param start
 *            initial time
 * @param random
 *            the {@link RandomGenerator}
 */
public SAPEREExponentialTime(final String rateEquation, final Time start, final RandomGenerator random) {
    super(Double.NaN, start, Objects.requireNonNull(random));
    double temp = 0d;
    boolean numeric = true;
    try {
        temp = Double.parseDouble(Objects.requireNonNull(rateEquation));
    } catch (NumberFormatException e) {
        numeric = false;
    }
    numericRate = numeric;
    staticRate = temp;
    if (numericRate) {
        if (Double.isInfinite(staticRate)) {
            exp = new Expression("asap");
        } else {
            exp = new Expression(FORMAT.format(staticRate));
        }
    } else {
        exp = new Expression(rateEquation);
    }
}

From source file:azkaban.jobtype.connectors.gobblin.GobblinHadoopJob.java

/**
 * Factory method that provides IPropertiesValidator based on preset in runtime.
 * Using factory method pattern as it is expected to grow.
 * @param preset/*  w ww.j a  va  2 s .co  m*/
 * @return IPropertiesValidator
 */
private static IPropertiesValidator getValidator(GobblinPresets preset) {
    Objects.requireNonNull(preset);
    switch (preset) {
    case MYSQL_TO_HDFS:
        return new MySqlToHdfsValidator();
    case HDFS_TO_MYSQL:
        return new HdfsToMySqlValidator();
    default:
        throw new UnsupportedOperationException("Preset " + preset + " is not supported");
    }
}

From source file:org.eclipse.hono.service.auth.device.X509AuthProvider.java

/**
 * Creates a {@link SubjectDnCredentials} instance from information provided by a
 * device in its client (X.509) certificate.
 * <p>/*from www. j  a  va2 s . c o m*/
 * The JSON object passed in is required to contain a <em>subject-dn</em> property.
 * If the <em>singleTenant</em> service config property is {@code false}, then the
 * object is also required to contain a <em>tenant-id</em> property, otherwise
 * the default tenant is used.
 * 
 * @param authInfo The authentication information provided by the device.
 * @return The credentials or {@code null} if the authentication information
 *         does not contain a tenant ID and subject DN.
 * @throws NullPointerException if the authentication info is {@code null}.
 */
@Override
protected DeviceCredentials getCredentials(final JsonObject authInfo) {

    Objects.requireNonNull(authInfo);
    try {
        final String tenantId = Optional
                .ofNullable(authInfo.getString(CredentialsConstants.FIELD_PAYLOAD_TENANT_ID)).orElseGet(() -> {
                    if (config.isSingleTenant()) {
                        return Constants.DEFAULT_TENANT;
                    } else {
                        return null;
                    }
                });
        final String subjectDn = authInfo.getString(CredentialsConstants.FIELD_PAYLOAD_SUBJECT_DN);
        if (tenantId == null || subjectDn == null) {
            return null;
        } else {
            return SubjectDnCredentials.create(tenantId, subjectDn);
        }
    } catch (ClassCastException e) {
        return null;
    }
}

From source file:com.github.horrorho.liquiddonkey.cloud.client.AccountClient.java

AccountClient(ResponseHandler<ICloud.MBSAccount> mbsaAccountResponseHandler, Headers headers) {
    this.mbsAccountResponseHandler = Objects.requireNonNull(mbsaAccountResponseHandler);
    this.headers = Objects.requireNonNull(headers);
}

From source file:net.sf.jabref.logic.openoffice.StyleLoader.java

public StyleLoader(OpenOfficePreferences preferences, JabRefPreferences jabrefPreferences,
        JournalAbbreviationLoader journalAbbreviationLoader, Charset encoding) {
    this.journalAbbreviationLoader = Objects.requireNonNull(journalAbbreviationLoader);
    this.preferences = Objects.requireNonNull(preferences);
    this.jabrefPreferences = Objects.requireNonNull(jabrefPreferences);
    this.encoding = Objects.requireNonNull(encoding);
    loadInternalStyles();//from   w ww .  j a v a 2s  . co m
    loadExternalStyles();
}

From source file:net.sf.jabref.importer.fileformat.FreeCiteImporter.java

@Override
public boolean isRecognizedFormat(BufferedReader reader) throws IOException {
    Objects.requireNonNull(reader);
    // TODO: We don't know how to recognize text files, therefore we return "false"
    return false;
}

From source file:com.dgtlrepublic.anitomyj.Tokenizer.java

/**
 * Tokenize a filename into {@link Element}s.
 *
 * @param filename the filename/*from   w ww . j  av  a 2 s.c  o  m*/
 * @param elements the list of elements where preidentified tokens will be added
 * @param options  the parser options
 * @param tokens   the list of tokens where tokens will be added.
 */
public Tokenizer(String filename, List<Element> elements, Options options, List<Token> tokens) {
    this.filename = Objects.requireNonNull(filename);
    this.elements = Objects.requireNonNull(elements);
    this.options = Objects.requireNonNull(options);
    this.tokens = Objects.requireNonNull(tokens);
}

From source file:org.eclipse.hono.connection.ConnectionFactoryImpl.java

/**
 * Sets the configuration parameters for connecting to the AMQP server.
 * <p>/* w  w  w  .  j  a v  a2  s .  c o m*/
 * The <em>name</em> property of the configuration is used as the basis
 * for the local container name which is then appended with a UUID.
 *  
 * @param config The configuration parameters.
 * @throws NullPointerException if the parameters are {@code null}.
 */
@Autowired
public final void setClientConfig(final ClientConfigProperties config) {
    this.config = Objects.requireNonNull(config);
}

From source file:com.github.horrorho.inflatabledonkey.cache.StreamCryptor.java

public StreamCryptor(KDF kdf, int saltLength, int nonceLength, int tagLength) {
    this.kdf = Objects.requireNonNull(kdf);
    this.saltLength = saltLength;
    this.nonceLength = nonceLength;
    this.tagLength = tagLength;
}

From source file:net.sf.jabref.importer.fileformat.BibTeXMLImporter.java

@Override
public ParserResult importDatabase(BufferedReader reader) throws IOException {
    Objects.requireNonNull(reader);

    List<BibEntry> bibItems = new ArrayList<>();

    // Obtain a factory object for creating SAX parsers
    SAXParserFactory parserFactory = SAXParserFactory.newInstance();
    // Configure the factory object to specify attributes of the parsers it
    // creates/*from  www.java2 s.  c  o  m*/
    // parserFactory.setValidating(true);
    parserFactory.setNamespaceAware(true);
    // Now create a SAXParser object

    try {
        SAXParser parser = parserFactory.newSAXParser(); //May throw exceptions
        BibTeXMLHandler handler = new BibTeXMLHandler();
        // Start the parser. It reads the file and calls methods of the handler.
        parser.parse(new InputSource(reader), handler);
        // When you're done, report the results stored by your handler object
        bibItems.addAll(handler.getItems());

    } catch (javax.xml.parsers.ParserConfigurationException e) {
        LOGGER.error("Error with XML parser configuration", e);
        return ParserResult.fromErrorMessage(e.getLocalizedMessage());
    } catch (org.xml.sax.SAXException e) {
        LOGGER.error("Error during XML parsing", e);
        return ParserResult.fromErrorMessage(e.getLocalizedMessage());
    } catch (IOException e) {
        LOGGER.error("Error during file import", e);
        return ParserResult.fromErrorMessage(e.getLocalizedMessage());
    }
    return new ParserResult(bibItems);
}