Example usage for java.util Optional isPresent

Introduction

In this page you can find the example usage for java.util Optional isPresent.

Prototype

public boolean isPresent()

Source Link

Document

If a value is present, returns true , otherwise false .

Usage

From source file:io.github.jeddict.jpa.spec.OrderBy.java

public static OrderBy load(MemberExplorer member) {
    Optional<AnnotationExplorer> orderByOpt = member.getAnnotation(javax.persistence.OrderBy.class);
    if (orderByOpt.isPresent()) {
        OrderBy orderBy = new OrderBy();
        orderByOpt.get().getString("value")
                .ifPresent(value -> orderBy.getAttributes().addAll(OrderbyItem.process(value)));
        return orderBy;
    }//  w w w.j  av  a  2s.c o m
    return null;
}

From source file:net.fabricmc.installer.installer.LocalVersionInstaller.java

public static void install(File mcDir, IInstallerProgress progress) throws Exception {
    JFileChooser fc = new JFileChooser();
    fc.setDialogTitle(Translator.getString("install.client.selectCustomJar"));
    fc.setFileFilter(new FileNameExtensionFilter("Jar Files", "jar"));
    if (fc.showOpenDialog(null) == JFileChooser.APPROVE_OPTION) {
        File inputFile = fc.getSelectedFile();

        JarFile jarFile = new JarFile(inputFile);
        Attributes attributes = jarFile.getManifest().getMainAttributes();
        String mcVersion = attributes.getValue("MinecraftVersion");
        Optional<String> stringOptional = ClientInstaller.isValidInstallLocation(mcDir, mcVersion);
        jarFile.close();/*  w w  w  .  j a  v  a2 s.com*/
        if (stringOptional.isPresent()) {
            throw new Exception(stringOptional.get());
        }
        ClientInstaller.install(mcDir, mcVersion, progress, inputFile);
    } else {
        throw new Exception("Failed to find jar");
    }

}

From source file:com.liferay.blade.cli.util.Prompter.java

public static boolean confirm(String question, InputStream in, PrintStream out,
        Optional<Boolean> defaultAnswer) {
    String questionWithPrompt = _buildQuestionWithPrompt(question, defaultAnswer);

    Optional<Boolean> answer = _getBooleanAnswer(questionWithPrompt, in, out, defaultAnswer);

    if (answer.isPresent()) {
        return answer.get();
    } else {//from   w ww. j a v a 2 s  . c  om
        throw new NoSuchElementException("Unable to acquire an answer");
    }
}

From source file:com.github.blindpirate.gogradle.crossplatform.Os.java

private static Os detectOs() {
    Optional<Map.Entry<Os, Boolean>> result = OS_DETECTION_MAP.entrySet().stream().filter(Map.Entry::getValue)
            .findFirst();//from   ww  w .  j av  a 2 s. c  om
    if (result.isPresent()) {
        return result.get().getKey();
    }
    throw new IllegalStateException("Unrecognized operation system:" + System.getProperty("os.name"));
}

From source file:org.elasticsearch.plugin.readonlyrest.utils.containers.ESWithReadonlyRestContainer.java

public static ESWithReadonlyRestContainer create(String elasticsearchConfig, ESInitalizer initalizer) {
    File config = ContainerUtils.getResourceFile(elasticsearchConfig);
    Optional<File> pluginFileOpt = GradleProjectUtils.assemble();
    if (!pluginFileOpt.isPresent()) {
        throw new ContainerCreationException("Plugin file assembly failed");
    }/*  w w w . jav a 2 s . com*/
    File pluginFile = pluginFileOpt.get();
    logger.info("Creating ES container ...");
    String elasticsearchConfigName = "elasticsearch.yml";
    ESWithReadonlyRestContainer container = new ESWithReadonlyRestContainer(
            new ImageFromDockerfile().withFileFromFile(pluginFile.getName(), pluginFile)
                    .withFileFromFile(elasticsearchConfigName, config)
                    .withDockerfileFromBuilder(builder -> builder
                            .from("docker.elastic.co/elasticsearch/elasticsearch:"
                                    + properties.getProperty("esVersion"))
                            .copy(pluginFile.getName(), "/tmp/")
                            .copy(elasticsearchConfigName, "/usr/share/elasticsearch/config/")
                            .run("yes | /usr/share/elasticsearch/bin/elasticsearch-plugin install "
                                    + "file:/tmp/" + pluginFile.getName())
                            .build()));
    return container.withExposedPorts(ES_PORT)
            .waitingFor(container.waitStrategy(initalizer).withStartupTimeout(CONTAINER_STARTUP_TIMEOUT));
}

From source file:com.ejisto.util.ContainerUtils.java

public static String extractAgentJar(String classPath) {
    String systemProperty = System.getProperty("ejisto.agent.jar.path");
    if (StringUtils.isNotBlank(systemProperty)) {
        return systemProperty;
    }/*from ww  w  .j  av a  2s  . c om*/

    final Optional<String> agentPath = Arrays.stream(classPath.split(Pattern.quote(File.pathSeparator)))
            .filter(e -> AGENT_JAR.matcher(e).matches()).findFirst();
    if (agentPath.isPresent()) {
        return Paths.get(System.getProperty("user.dir"), agentPath.get()).toString();
    }
    throw new IllegalStateException("unable to find agent jar");
}

From source file:de.mas.wiiu.jnus.utils.FSTUtils.java

public static Optional<FSTEntry> getEntryByFullPath(FSTEntry root, String filePath) {
    for (FSTEntry cur : root.getFileChildren()) {
        if (cur.getFullPath().equals(filePath)) {
            return Optional.of(cur);
        }//from  w  w  w. ja  v a  2s .c om
    }

    for (FSTEntry cur : root.getDirChildren()) {
        Optional<FSTEntry> res = getEntryByFullPath(cur, filePath);
        if (res.isPresent()) {
            return res;
        }
    }
    return Optional.empty();
}

From source file:com.liferay.blade.cli.util.Prompter.java

private static String _buildQuestionWithPrompt(String question, Optional<Boolean> defaultAnswer) {
    String yesDefault = "y";
    String noDefault = "n";

    if (defaultAnswer.isPresent()) {
        if (defaultAnswer.get()) {
            yesDefault = "Y";
        } else {/*from   w w w . j a  v  a 2  s.  c om*/
            noDefault = "N";
        }
    }

    return question + " (" + yesDefault + "/" + noDefault + ")";
}

From source file:io.github.lxgaming.teleportbow.managers.CommandManager.java

public static boolean registerCommand(Class<? extends AbstractCommand> commandClass) {
    if (getCommandClasses().contains(commandClass)) {
        TeleportBow.getInstance().getLogger().warn("{} has already been registered",
                commandClass.getSimpleName());
        return false;
    }// w w  w  .ja v a 2 s  . c o  m

    getCommandClasses().add(commandClass);
    Optional<AbstractCommand> command = Toolbox.newInstance(commandClass);
    if (!command.isPresent()) {
        TeleportBow.getInstance().getLogger().error("{} failed to initialize", commandClass.getSimpleName());
        return false;
    }

    getCommands().add(command.get());
    Sponge.getCommandManager().register(TeleportBow.getInstance().getPluginContainer(), command.get(),
            command.get().getAliases().toArray(new String[0]));
    TeleportBow.getInstance().getLogger().debug("{} registered", commandClass.getSimpleName());
    return true;
}

From source file:com.hortonworks.registries.storage.util.StorageUtils.java

public static void ensureUnique(Storable storable,
        Function<List<QueryParam>, Collection<? extends Storable>> listFn, List<QueryParam> queryParams) {
    Collection<? extends Storable> storables = listFn.apply(queryParams);
    Optional<Long> entities = storables.stream().map(Storable::getId).filter(x -> !x.equals(storable.getId()))
            .findAny();//  w  w w  .  ja  va2 s. c o m
    if (entities.isPresent()) {
        throw new DuplicateEntityException("Entity with '" + queryParams + "' already exists");
    }
}