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

List of usage examples for com.google.common.base Strings isNullOrEmpty

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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.carrot2.source.microsoft.FetchAndSaveBingResponse.java

public static void main(String[] args) throws Exception {
    final Controller controller = ControllerFactory.createSimple();
    try {/*  w w w. java2  s  . c o  m*/
        String appid = System.getProperty(Bing3DocumentSource.SYSPROP_BING3_API);
        if (Strings.isNullOrEmpty(appid)) {
            System.err.println("Provide Bing3 API key in property: " + Bing3DocumentSource.SYSPROP_BING3_API);
        }

        final Map<String, Object> attributes = new HashMap<String, Object>();
        CommonAttributesDescriptor.attributeBuilder(attributes).query(" ")
                .results(200);

        /* Put your own API key here or in a system property! */
        Bing3WebDocumentSourceDescriptor.attributeBuilder(attributes).appid(appid).market((MarketOption) null);

        ProcessingResult result = controller.process(attributes, Bing3WebDocumentSource.class);
        Persister p = new Persister();
        p.write(result, new File("result.xml"));
    } finally {
        controller.dispose();
    }
}

From source file:bst.examples.BSTExamples.java

/**
 * @param args the command line arguments
 *///from   w  w  w  .  ja  va2 s  .c o m
public static void main(String[] args) {
    // TODO code application logic here

    BinarySearchTree b = new BinarySearchTree();
    b.insert(3);
    b.insert(8);
    b.insert(1);
    b.insert(4);
    b.insert(6);
    b.insert(2);
    b.insert(10);
    b.insert(9);
    b.insert(20);
    b.insert(25);
    b.insert(15);
    b.insert(16);
    System.out.println("Original Tree : ");

    List<String> myList = Arrays.asList("a1", "a2", "b1", "c2", "c1");

    System.out.println(Strings.isNullOrEmpty(""));

    myList.stream().filter(s -> s.startsWith("c")).map(String::toUpperCase).sorted()
            .forEach(System.out::println);

}

From source file:qa.qcri.nadeef.web.Dashboard.java

public static void main(String[] args) {
    Bootstrap.start();/*ww w .j a  v  a 2  s  .co  m*/
    Tracer tracer = Tracer.getTracer(Dashboard.class);
    String rootDir = System.getProperty("rootDir");
    if (Strings.isNullOrEmpty(rootDir)) {
        staticFileLocation("qa/qcri/nadeef/web/public");
    } else {
        externalStaticFileLocation(rootDir);
    }

    get("/", (request, response) -> {
        response.redirect("/index.html");
        return 0;
    });

    exception(Exception.class, (ex, request, response) -> {
        response.status(400);
        tracer.err("Exception happens ", ex);
        JsonObject json = new JsonObject();
        json.add("error", new JsonPrimitive(ex.getMessage()));
        response.body(json.toString());
    });

    SQLDialect dialect = NadeefConfiguration.getDbConfig().getDialect();
    WidgetAction.setup(dialect);
    TableAction.setup(dialect);
    RuleAction.setup(dialect);
    SourceAction.setup(dialect);
    RemoteAction.setup(dialect);
    ProjectAction.setup(dialect);
    AnalyticAction.setup(dialect);
}

From source file:org.seedstack.seed.core.SeedMain.java

/**
 * Entry point of Seed standalone applications (launched from the command-line).
 *
 * @param args The command-line arguments.
 *//*ww  w .ja va2 s.  c  o  m*/
public static void main(String[] args) {
    String toolName = System.getProperty("seedstack.tool");
    SeedLauncher seedLauncher;

    if (!Strings.isNullOrEmpty(toolName)) {
        seedLauncher = getToolLauncher(toolName);
    } else {
        seedLauncher = getLauncher();
    }

    Runtime.getRuntime().addShutdownHook(new Thread(() -> {
        try {
            seedLauncher.shutdown();
        } catch (Exception e) {
            handleException(e);
        }
        Seed.close();
    }, "shutdown"));

    try {
        seedLauncher.launch(args);
    } catch (Exception e) {
        handleException(e);
        System.exit(-1);
    }
}

From source file:com.github.fge.jsonschema.misc.WebApp.java

public static void main(final String... args) throws Exception {
    final String webappDirLocation = "src/main/webapp/";

    //The port that we should run on can be set into an environment variable
    //Look for that variable and default to 8080 if it isn't there.
    String webPort = System.getenv("PORT");
    if (Strings.isNullOrEmpty(webPort))
        webPort = "8080";

    final Server server = new Server(Integer.valueOf(webPort));
    final WebAppContext root = new WebAppContext();

    root.setContextPath("/");
    root.setDescriptor(webappDirLocation + "/WEB-INF/web.xml");
    root.setResourceBase(webappDirLocation);

    //Parent loader priority is a class loader setting that Jetty accepts.
    //By default Jetty will behave like most web containers in that it will
    //allow your application to replace non-server libraries that are part of the
    //container. Setting parent loader priority to true changes this behavior.
    //Read more here: http://wiki.eclipse.org/Jetty/Reference/Jetty_Classloading
    root.setParentLoaderPriority(true);//from   w  w  w . j a  v  a 2s  . c om

    server.setHandler(root);

    server.start();
    server.join();
}

From source file:com.google.devtools.kythe.extractors.jvm.JarExtractor.java

public static void main(String[] args) throws IOException, ExtractionException {
    JvmExtractor.Options options = new JvmExtractor.Options();
    JCommander jc = new JCommander(options, args);
    jc.setProgramName("jar_extractor");
    if (options.help) {
        jc.usage();/*from ww w. j a v  a  2 s  .  co  m*/
        System.exit(2);
    }

    CompilationDescription indexInfo = JvmExtractor.extract(options);

    String outputFile = System.getenv("KYTHE_OUTPUT_FILE");
    if (!Strings.isNullOrEmpty(outputFile)) {
        IndexInfoUtils.writeIndexInfoToFile(indexInfo, outputFile);
    } else {
        String outputDir = System.getenv("KYTHE_OUTPUT_DIRECTORY");
        if (Strings.isNullOrEmpty(outputDir)) {
            throw new IllegalArgumentException(
                    "required KYTHE_OUTPUT_FILE or KYTHE_OUTPUT_DIRECTORY environment variable is unset");
        }
        if (Strings.isNullOrEmpty(System.getenv("KYTHE_INDEX_PACK"))) {
            String name = Hashing.sha256().hashUnencodedChars(Joiner.on(" ").join(args)).toString();
            String path = IndexInfoUtils.getIndexPath(outputDir, name).toString();
            IndexInfoUtils.writeIndexInfoToFile(indexInfo, path);
        } else {
            new Archive(outputDir).writeDescription(indexInfo);
        }
    }
}

From source file:org.parboiled.examples.calculators.CalculatorParser.java

@SuppressWarnings({ "unchecked" })
public static <V, P extends CalculatorParser<V>> void main(Class<P> parserClass) {
    CalculatorParser<V> parser = Parboiled.createParser(parserClass);

    while (true) {
        System.out.print("Enter a calculators expression (single RETURN to exit)!\n");
        String input = new Scanner(System.in).nextLine();
        if (Strings.isNullOrEmpty(input))
            break;

        ParsingResult<?> result = new RecoveringParseRunner(parser.inputLine()).run(input);

        if (result.hasErrors()) {
            System.out.println("\nParse Errors:\n" + printParseErrors(result));
        }//from ww w .ja  v a 2 s . c  o m

        Object value = result.parseTreeRoot.getValue();
        if (value != null) {
            String str = value.toString();
            int ix = str.indexOf('|');
            if (ix >= 0)
                str = str.substring(ix + 2); // extract value part of AST node toString()
            System.out.println(input + " = " + str + '\n');
        }
        if (value instanceof GraphNode) {
            System.out.println("\nAbstract Syntax Tree:\n"
                    + printTree((GraphNode) value, new ToStringFormatter(null)) + '\n');
        } else {
            System.out.println("\nParse Tree:\n" + printNodeTree(result) + '\n');
        }
    }
}

From source file:org.attribyte.api.pubsub.impl.client.ReplicationTestEndpoint.java

public static void main(String[] args) throws Exception {

    Properties props = new Properties();
    FileInputStream fis = new FileInputStream(args[0]);
    props.load(fis);/*from w  w  w . j  a  va2  s .c  o m*/
    fis.close();

    String _hubURL = props.getProperty("hub.url");
    if (_hubURL == null) {
        System.err.println("The 'hub.url' must be specified");
        System.exit(1);
    }

    if (_hubURL.endsWith("/")) {
        _hubURL = _hubURL.substring(0, _hubURL.length() - 1);
    }

    final String hubURL = _hubURL;

    String _replicationTopicURL = props.getProperty("hub.replicationTopic");
    if (Strings.isNullOrEmpty(_replicationTopicURL)) {
        System.err.println("The 'hub.replicationTopic' must be specified");
        System.exit(1);
    }

    if (!_replicationTopicURL.startsWith("/")) {
        _replicationTopicURL = "/" + _replicationTopicURL;
    }

    final String replicationTopicURL = _replicationTopicURL;

    String hubUsername = props.getProperty("hub.username");
    String hubPassword = props.getProperty("hub.password");
    final Optional<BasicAuth> hubAuth;
    if (hubUsername != null && hubPassword != null) {
        hubAuth = Optional.of(new BasicAuth(hubUsername, hubPassword));
    } else {
        hubAuth = Optional.absent();
    }

    Topic replicationTopic = new Topic.Builder().setTopicURL(replicationTopicURL).setId(2L).create();

    String listenAddress = props.getProperty("endpoint.listenAddress", "127.0.0.1");
    int listenPort = Integer.parseInt(props.getProperty("endpoint.listenPort", "8088"));
    String endpointUsername = props.getProperty("endpoint.username");
    String endpointPassword = props.getProperty("endpoint.password");
    final Optional<BasicAuth> endpointAuth;
    if (!Strings.isNullOrEmpty(endpointUsername) && !Strings.isNullOrEmpty(endpointPassword)) {
        endpointAuth = Optional.of(new BasicAuth(endpointUsername, endpointPassword));
    } else {
        endpointAuth = Optional.absent();
    }

    final AtomicLong completeCount = new AtomicLong();

    final NotificationEndpoint notificationEndpoint = new NotificationEndpoint(listenAddress, listenPort,
            endpointAuth, ImmutableList.of(replicationTopic), new NotificationEndpoint.Callback() {
                @Override
                public boolean notification(final Notification notification) {
                    byte[] body = notification.getContent().toByteArray();
                    System.out.println(new String(body, Charsets.UTF_8));
                    Collection<Header> headers = notification.getHeaders();
                    if (headers != null) {
                        for (Header header : headers) {
                            System.out.println(header.toString());
                        }
                    }
                    completeCount.incrementAndGet();
                    return true;
                }
            });

    notificationEndpoint.start();

    String _endpointCallbackBase = props.getProperty("endpoint.callbackBase");
    if (_endpointCallbackBase == null) {
        System.err.println("The 'endpoint.callbackBase' must be specified");
        System.exit(1);
    }

    if (_endpointCallbackBase.endsWith("/")) {
        _endpointCallbackBase = _endpointCallbackBase.substring(0, _endpointCallbackBase.length() - 1);
    }

    final String endpointCallbackBase = _endpointCallbackBase;

    final SubscriptionClient subscriptionClient = new SubscriptionClient();
    subscriptionClient.start();
    SubscriptionClient.Result res = subscriptionClient.postSubscriptionRequest(replicationTopicURL,
            hubURL + "/subscribe", endpointCallbackBase + replicationTopicURL, 3600 * 24 * 365 * 5,
            endpointAuth, hubAuth);

    if (res.isError) {
        System.err.println("Problem creating subscription: " + res.code);
        if (res.message.isPresent()) {
            System.err.println(res.message.get());
        }
        if (res.cause.isPresent()) {
            res.cause.get().printStackTrace();
        }
    } else {
        System.out.println("Subscription created!");
    }

    long elapsedMillis = 0L;
    long maxMillis = 30000L;
    while (elapsedMillis < maxMillis) {
        Thread.sleep(5000L);
        System.out.println("Completed " + completeCount.get());
        elapsedMillis += 5000L;
    }

    System.out.println("Unsubscribing...");

    subscriptionClient.postUnsubscribeRequest(replicationTopicURL, hubURL + "/subscribe",
            endpointCallbackBase + replicationTopicURL, endpointAuth, hubAuth);

    Thread.sleep(5000L);

    System.out.println("Shutting down subscription client...");

    subscriptionClient.shutdown();

    System.out.println("Shutting down notification endpoint...");
    notificationEndpoint.stop();

    System.out.println("Notification endpoint stopped...");
}

From source file:com.axelor.erp.data.Main.java

/**
 * Main method.//from  w  w w .  j  a  v  a  2s . c om
 * Can be launched by the script axelor-data.sh
 * 
 * @param args
 *       Arguments
 * 
 * @throws Exception
 */
public static void main(String[] args) throws Exception {

    final Commander cmd = new Commander();
    try {
        if (args == null || args.length == 0)
            throw new Exception();
        cmd.parse(args);
        if (!cmd.getDataDir().isDirectory())
            throw new Exception("invalid data directory");
        if (!cmd.getConfig().isFile())
            throw new Exception("invalid config file");
    } catch (Exception e) {
        String message = e.getMessage();
        if (!Strings.isNullOrEmpty(message))
            System.err.println(e.getMessage());
        Commander.usage();
        return;
    }

    if (cmd.getShowHelp() == Boolean.TRUE) {
        Commander.usage();
        return;
    }

    final String errorDir = cmd.getErrorDir() == null ? null : cmd.getErrorDir().getPath();

    Injector injector = Guice.createInjector(new AbstractModule() {

        @Override
        protected void configure() {
            install(new JpaModule("persistenceImportUnit", true, true));
            install(new AuthModule.Simple());
            bindConstant().annotatedWith(Names.named("axelor.data.config")).to(cmd.getConfig().toString());
            bindConstant().annotatedWith(Names.named("axelor.data.dir")).to(cmd.getDataDir().toString());
            bind(String.class).annotatedWith(Names.named("axelor.error.dir"))
                    .toProvider(Providers.<String>of(errorDir));
        }
    });

    CSVImporter importer = injector.getInstance(CSVImporter.class);

    importer.addListener(new Listener() {

        @Override
        public void imported(Model bean) {
        }

        @Override
        public void imported(Integer total, Integer success) {
            System.out.println("/*** Records total : " + total);
            System.out.println("/*** Records success : " + success);
        }

        @Override
        public void handle(Model bean, Exception e) {

        }
    });

    importer.run(null);
}

From source file:com.axelor.apps.erp.Main.java

/**
 * Main method.//from   w ww.ja v  a2 s. c o  m
 * Can be launched by the script axelor-data.sh
 * 
 * @param args
 *       Arguments
 * 
 * @throws Exception
 */
public static void main(String[] args) throws Exception {

    final Commander cmd = new Commander();
    try {
        if (args == null || args.length == 0)
            throw new Exception();
        cmd.parse(args);
        if (!cmd.getDataDir().isDirectory())
            throw new Exception("invalid data directory");
        if (!cmd.getConfig().isFile())
            throw new Exception("invalid config file");
    } catch (Exception e) {
        String message = e.getMessage();
        if (!Strings.isNullOrEmpty(message))
            System.err.println(e.getMessage());
        Commander.usage();
        return;
    }

    if (cmd.getShowHelp() == Boolean.TRUE) {
        Commander.usage();
        return;
    }

    final String errorDir = cmd.getErrorDir() == null ? null : cmd.getErrorDir().getPath();

    Injector injector = Guice.createInjector(new AbstractModule() {

        @Override
        protected void configure() {
            install(new JpaModule("persistenceUnit", true, true));
            install(new AuthModule.Simple());
            install(new AppModule());
            bindConstant().annotatedWith(Names.named("axelor.data.config")).to(cmd.getConfig().toString());
            bindConstant().annotatedWith(Names.named("axelor.data.dir")).to(cmd.getDataDir().toString());
            bind(String.class).annotatedWith(Names.named("axelor.error.dir"))
                    .toProvider(Providers.<String>of(errorDir));
        }
    });

    CSVImporter importer = injector.getInstance(CSVImporter.class);

    importer.addListener(new Listener() {

        @Override
        public void imported(Model bean) {
        }

        @Override
        public void imported(Integer total, Integer success) {
            System.out.println("/*** Records total : " + total);
            System.out.println("/*** Records success : " + success);
        }

        @Override
        public void handle(Model bean, Exception e) {

        }
    });

    importer.run(null);
}