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

Introduction

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

Prototype

public static boolean isNullOrEmpty(@Nullable String string)

Source Link

Document

Returns true if the given string is null or is the empty string.

Usage

From source file:org.fusesource.fabric.service.jclouds.functions.ToAdminAccess.java

public static Optional<AdminAccess> apply(CreateJCloudsContainerOptions input) {
    AdminAccess.Builder builder = AdminAccess.builder();
    //There are images that have issues with copying of public keys, creation of admin user accounts,etc
    //To allow/*from   w w w.  java 2 s.  co  m*/
    if (input.isAdminAccess()) {
        if (!Strings.isNullOrEmpty(input.getPublicKeyFile())) {
            File publicKey = new File(input.getPublicKeyFile());
            if (publicKey.exists()) {
                builder.adminPublicKey(publicKey);
            } else {
                LOGGER.warn("Public key has been specified file: {} files cannot be found. Ignoring.",
                        publicKey.getAbsolutePath());
                return Optional.of(AdminAccess.standard());
            }
        }

        if (!Strings.isNullOrEmpty(input.getUser())) {
            builder.adminUsername(input.getUser());
        }

        return Optional.of(builder.build());
    }
    return Optional.absent();
}

From source file:org.caleydo.core.internal.startup.StartupAddons.java

public static Map<String, IStartupAddon> findAll() {
    List<StartupAddonDesc> tmp = new ArrayList<>();
    try {/*from w  w w  . ja va  2s .  c  o  m*/
        for (IConfigurationElement elem : RegistryFactory.getRegistry()
                .getConfigurationElementsFor(EXTENSION_POINT)) {
            final Object o = elem.createExecutableExtension("class");
            if (o instanceof IStartupAddon) {
                String orderS = elem.getAttribute("order");
                int order = Strings.isNullOrEmpty(orderS) ? 10 : Integer.parseInt(orderS);
                tmp.add(new StartupAddonDesc(elem.getAttribute("name"), (IStartupAddon) o, order));
            }
        }
    } catch (CoreException e) {
        System.err.println("can't find implementations of " + EXTENSION_POINT + " : " + "name");
        e.printStackTrace();
    }

    // sort by order
    Collections.sort(tmp);
    Map<String, IStartupAddon> factories = Maps.newLinkedHashMap();
    for (StartupAddonDesc desc : tmp)
        factories.put(desc.label, desc.addon);
    return Collections.unmodifiableMap(factories);
}

From source file:org.sonar.server.util.Validation.java

public static void checkMandatoryParameter(String value, String paramName) {
    if (Strings.isNullOrEmpty(value)) {
        throw new BadRequestException(Validation.CANT_BE_EMPTY_MESSAGE, paramName);
    }//from w  w w .j ava2s .  c o  m
}

From source file:com.github.jcustenborder.kafka.connect.utils.util.VersionUtil.java

public static String version(Class<?> cls) {
    final String FALLBACK_VERSION = "0.0.0.0";

    try {/*from   w  w w .j a  v a2  s . c  om*/
        String version = cls.getPackage().getImplementationVersion();

        if (Strings.isNullOrEmpty(version)) {
            version = FALLBACK_VERSION;
        }

        return version;
    } catch (Exception ex) {
        return FALLBACK_VERSION;
    }
}

From source file:org.apache.james.jmap.api.vacation.AccountId.java

public static AccountId fromString(String identifier) {
    Preconditions.checkArgument(!Strings.isNullOrEmpty(identifier),
            "AccountId identifier should not be null or empty");
    return new AccountId(identifier);
}

From source file:org.sonatype.nexus.plugins.cas.CasUtil.java

/**
 * Returns {@code true} if the request was issued by a web browser.
 *
 *
 * @param request http request//from  ww w .  j  av  a2s  . com
 *
 * @return {@code true} if the request was issued by a web browser.
 */
public static boolean isBrowser(HttpServletRequest request) {
    boolean browser = false;

    String ua = request.getHeader("User-Agent");

    if (!Strings.isNullOrEmpty(ua)) {
        browser = isWebInterface(request) || isBrowserUserAgent(ua);
    }

    return browser;
}

From source file:org.apache.james.jmap.model.BlobId.java

public static BlobId of(String rawValue) {
    Preconditions.checkArgument(!Strings.isNullOrEmpty(rawValue), "'rawValue' is mandatory");
    return new BlobId(rawValue);
}

From source file:co.cask.cdap.operations.OperationalStatsUtils.java

@Nullable
static OperationalExtensionId getOperationalExtensionId(OperationalStats operationalStats) {
    String serviceName = operationalStats.getServiceName();
    String statType = operationalStats.getStatType();
    if (Strings.isNullOrEmpty(serviceName) && Strings.isNullOrEmpty(statType)) {
        return null;
    }// w  w w  .j  av a 2 s. c  o  m
    if (!Strings.isNullOrEmpty(serviceName)) {
        serviceName = serviceName.toLowerCase();
    } else {
        LOG.warn(
                "Found operational stat without service name - {}. This stat will not be discovered by service name.",
                operationalStats.getClass().getName());
    }
    if (!Strings.isNullOrEmpty(statType)) {
        statType = statType.toLowerCase();
    } else {
        LOG.warn(
                "Found operational stat without stat type - {}. This stat will not be discovered by stat type.",
                operationalStats.getClass().getName());
    }
    return new OperationalExtensionId(serviceName, statType);
}

From source file:com.facebook.buck.intellij.ideabuck.config.BuckWSServerPortUtils.java

public static int getPort(String runInPath) throws NumberFormatException, IOException, ExecutionException {
    BuckSettingsProvider.State state = BuckSettingsProvider.getInstance().getState();
    if (state == null) {
        throw new RuntimeException("Cannot load ideabuck settings.");
    }// w  ww.  ja  v  a  2 s.  c  om

    String exec = state.buckExecutable;

    if (Strings.isNullOrEmpty(exec)) {
        throw new RuntimeException("Buck executable is not defined in settings.");
    }

    GeneralCommandLine commandLine = new GeneralCommandLine();
    commandLine.setExePath(exec);
    commandLine.withWorkDirectory(runInPath);
    commandLine.addParameter("server");
    commandLine.addParameter("status");
    commandLine.addParameter("--http-port");
    commandLine.setRedirectErrorStream(true);

    Process p = commandLine.createProcess();
    BufferedReader reader = new BufferedReader(new InputStreamReader(p.getInputStream()));

    int port = CONNECTION_FAILED_PORT;
    String line;
    while ((line = reader.readLine()) != null) {
        if (line.startsWith(SEARCH_FOR)) {
            port = Integer.parseInt(line.substring(SEARCH_FOR.length()));
            if (port == CONNECTION_FAILED_PORT) {
                // if the buck server is off, and it gives us -1, throw this exception
                String error = "Your buck server may be turned off, since the Buck daemon is on port " + port
                        + ".\nTry adding to your '.buckconfig.local' or '.buckconfig' file,"
                        + " if you don't have it already set:\n" + "[httpserver]\n" + "    port = 0\n"
                        + "After that, restart IntelliJ or reopen your project.\n";
                throw new RuntimeException(error);
            }
        }
    }
    return port;
}

From source file:org.apache.kylin.metrics.property.QueryPropertyEnum.java

public static QueryPropertyEnum getByName(String name) {
    if (Strings.isNullOrEmpty(name)) {
        return null;
    }//from   ww w.j  a  v a2s  .  c  o m
    for (QueryPropertyEnum property : QueryPropertyEnum.values()) {
        if (property.propertyName.equals(name.toUpperCase())) {
            return property;
        }
    }

    return null;
}