Example usage for com.google.common.base Strings emptyToNull

Introduction

In this page you can find the example usage for com.google.common.base Strings emptyToNull.

Prototype

@Nullable
public static String emptyToNull(@Nullable String string)

Source Link

Document

Returns the given string if it is nonempty; null otherwise.

Usage

From source file:net.es.nsi.pce.pf.PfUtils.java

public static String getDestinationStpOrFail(P2PServiceBaseType p2ps) {
    Optional<String> destStp = Optional.fromNullable(Strings.emptyToNull(p2ps.getDestSTP()));
    if (destStp.isPresent()) {
        return destStp.get();
    }/*from w w  w  . java2  s  .c o m*/

    throw Exceptions.missingParameter(Point2PointTypes.getSourceStp().getNamespace(),
            Point2PointTypes.getDestStp().getType(), "null");
}

From source file:eu.arkitech.logback.common.DefaultLoggingEventMutator.java

@Override
public void mutate(final ILoggingEvent event_) {
    final SLoggingEvent1 event = (SLoggingEvent1) event_;
    final String application = Strings
            .emptyToNull(Objects.firstNonNull(this.application, DefaultLoggingEventMutator.defaultApplication));
    final String component = Strings
            .emptyToNull(Objects.firstNonNull(this.component, DefaultLoggingEventMutator.defaultComponent));
    final String node = Strings
            .emptyToNull(Objects.firstNonNull(this.node, DefaultLoggingEventMutator.defaultNode));
    long sequence;
    synchronized (this) {
        sequence = this.sequence;
        this.sequence++;
    }//w w  w .j av  a 2s  .c om
    if (event.mdcPropertyMap == null)
        event.mdcPropertyMap = new HashMap<String, String>(3);
    else
        event.mdcPropertyMap = new HashMap<String, String>(event.mdcPropertyMap);
    if ((application != null)
            && !event.mdcPropertyMap.containsKey(DefaultLoggingEventMutator.defaultApplicationMdcName))
        event.mdcPropertyMap.put(DefaultLoggingEventMutator.defaultApplicationMdcName, application);
    if ((component != null)
            && !event.mdcPropertyMap.containsKey(DefaultLoggingEventMutator.defaultComponentMdcName))
        event.mdcPropertyMap.put(DefaultLoggingEventMutator.defaultComponentMdcName, component);
    if ((node != null) && !event.mdcPropertyMap.containsKey(DefaultLoggingEventMutator.defaultNodeMdcName))
        event.mdcPropertyMap.put(DefaultLoggingEventMutator.defaultNodeMdcName, node);
    event.mdcPropertyMap.put(DefaultLoggingEventMutator.defaultSequenceMdcKey, Long.toString(sequence));
    final LinkedList<String> mdcInvalidKeys = new LinkedList<String>();
    for (final String mdcKey : event.mdcPropertyMap.keySet()) {
        final Object mdcValue = event.mdcPropertyMap.get(mdcKey);
        if (!(mdcValue instanceof String))
            mdcInvalidKeys.add(mdcKey);
    }
    for (final String mdcInvalidKey : mdcInvalidKeys)
        event.mdcPropertyMap.remove(mdcInvalidKey);
    if (event.argumentArray != null)
        for (int index = 0; index < event.argumentArray.length; index++)
            if ((event.argumentArray[index] != null) && !(event.argumentArray[index] instanceof Serializable))
                event.argumentArray[index] = String.valueOf(event.argumentArray[index]);
}

From source file:com.parallax.server.blocklyprop.servlets.RegisterServlet.java

@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
    resp.setContentType("application/json");

    String screenname = Strings.emptyToNull(req.getParameter("screenname"));
    String email = Strings.emptyToNull(req.getParameter("email"));
    String password = Strings.emptyToNull(req.getParameter("password"));
    String confirmPassword = Strings.emptyToNull(req.getParameter("confirmpassword"));

    req.setAttribute("screenname", screenname == null ? "" : screenname);
    req.setAttribute("email", email == null ? "" : email);

    Long idUser;//from w w w.j a  v a  2s. c o  m
    try {
        idUser = securityService.register(screenname, email, password, confirmPassword);
        if (idUser != null && idUser > 0) {
            req.getRequestDispatcher("WEB-INF/servlet/register/registered.jsp").forward(req, resp);
        } else {
            req.setAttribute("error", true);
            req.getRequestDispatcher("WEB-INF/servlet/register/register.jsp").forward(req, resp);
        }
    } catch (NonUniqueEmailException ex) {
        req.setAttribute("emailAlreadyUsed", true);
        req.getRequestDispatcher("WEB-INF/servlet/register/register.jsp").forward(req, resp);
    } catch (PasswordVerifyException ex) {
        req.setAttribute("passwordsDontMatch", true);
        req.getRequestDispatcher("WEB-INF/servlet/register/register.jsp").forward(req, resp);
    } catch (NullPointerException npe) {
        req.setAttribute("missingFields", true);
        req.getRequestDispatcher("WEB-INF/servlet/register/register.jsp").forward(req, resp);
    } catch (PasswordComplexityException pce) {
        req.setAttribute("passwordComplexity", true);
        req.getRequestDispatcher("WEB-INF/servlet/register/register.jsp").forward(req, resp);
    } catch (ScreennameUsedException sue) {
        req.setAttribute("screennameUsed", true);
        req.getRequestDispatcher("WEB-INF/servlet/register/register.jsp").forward(req, resp);
    }
}

From source file:com.google.gerrit.server.project.CommentLinkInfo.java

public CommentLinkInfo(String name, String match, String link, String html, Boolean enabled) {
    checkArgument(name != null, "invalid commentlink.name");
    checkArgument(!Strings.isNullOrEmpty(match), "invalid commentlink.%s.match", name);
    link = Strings.emptyToNull(link);
    html = Strings.emptyToNull(html);//  w ww.  j  a v a 2s. c  o m
    checkArgument((link != null && html == null) || (link == null && html != null),
            "commentlink.%s must have either link or html", name);
    this.name = name;
    this.match = match;
    this.link = link;
    this.html = html;
    this.enabled = enabled;
}

From source file:org.n52.shetland.util.StringHelper.java

public static String convertStreamToString(InputStream is, String charset) throws IOException {
    try (InputStreamReader reader = new InputStreamReader(is, Strings.emptyToNull(charset))) {
        return CharStreams.toString(reader);
    } catch (IOException ex) {
        throw new IOException("Error while reading content of HTTP request", ex);
    }//www . ja  va 2  s  .c  om
}

From source file:com.skcraft.launcher.swing.ObjectSwingMapper.java

public void map(@NonNull final JTextComponent textComponent, String name) {
    final MutatorAccessorField<String> field = getField(name, String.class);

    add(new FieldMapping() {
        @Override/*from w  w w  .  jav  a 2 s.c o  m*/
        public void copyFromObject() {
            textComponent.setText(field.get());
        }

        @SuppressWarnings("unchecked")
        @Override
        public void copyFromSwing() {
            field.set(Strings.emptyToNull(textComponent.getText()));
        }
    });
}

From source file:com.mattring.flink.nats.NatsSource.java

public NatsSource(NatsConfig natsConfig, String optionalDelimiter) {
    this.natsConfig = natsConfig;
    this.delimiter = Strings.emptyToNull(optionalDelimiter);
    this.isRunning = false;
}

From source file:org.n52.shetland.ogc.ows.OwsRequestMethod.java

public OwsRequestMethod(URI href, String httpMethod, Collection<OwsDomain> constraints) {
    super(href);//from w w  w  .ja  va2 s.  c o m
    this.httpMethod = Objects.requireNonNull(Strings.emptyToNull(httpMethod));
    this.constraints = CollectionHelper.newSortedSet(constraints);
}

From source file:com.reprezen.swagedit.model.Model.java

/**
 * Returns a model build by parsing a YAML content.
 * //from   www .j a v  a  2 s  . co  m
 * @param text
 * @return model
 */
public static Model parseYaml(SwaggerSchema schema, String text) {
    if (Strings.emptyToNull(text) == null) {
        return empty(schema);
    }

    Model model = new Model(schema);
    try {
        reader(model).readValue(text);
    } catch (IllegalArgumentException | IOException e) {
        e.printStackTrace();
    }

    for (AbstractNode node : model.allNodes()) {
        node.setType(model.schema.getType(node));
    }

    return model;
}

From source file:org.obiba.git.command.AbstractGitWriteCommand.java

protected AbstractGitWriteCommand(@NotNull File repositoryPath, @Nullable File workPath, String commitMessage) {
    super(repositoryPath, workPath);
    // Current JGit API does not account for empty string and ignores an empty commit message
    this.commitMessage = Strings.emptyToNull(commitMessage);
}