Example usage for com.google.common.base Optional of

Introduction

In this page you can find the example usage for com.google.common.base Optional of.

Prototype

public static <T> Optional<T> of(T reference)

Source Link

Document

Returns an Optional instance containing the given non-null reference.

Usage

From source file:com.dasasian.chok.util.NodeConfigurationLoader.java

public static NodeConfiguration loadConfiguration(int overrideStartPort) throws ClassNotFoundException {
    return loadConfiguration(Optional.of(overrideStartPort), Optional.<File>absent(),
            Optional.<Integer>absent(), Optional.<Class<? extends IMonitor>>absent(),
            Optional.<Integer>absent());
}

From source file:ru.org.linux.tracker.TrackerFilterEnum.java

public static Optional<TrackerFilterEnum> getByValue(String filterAction) {
    if (valuesSet.contains(filterAction)) {
        return Optional.of(TrackerFilterEnum.valueOf(filterAction.toUpperCase()));
    } else {//w w  w. j ava  2  s . c o  m
        return Optional.absent();
    }
}

From source file:org.apache.distributedlog.util.CommandLineUtils.java

public static Optional<Integer> getOptionalIntegerArg(CommandLine cmdline, String arg)
        throws IllegalArgumentException {
    try {//from ww w  . j  ava  2  s.co  m
        if (cmdline.hasOption(arg)) {
            return Optional.of(Integer.parseInt(cmdline.getOptionValue(arg)));
        } else {
            return Optional.absent();
        }
    } catch (NumberFormatException ex) {
        throw new IllegalArgumentException(arg + " is not a number");
    }
}

From source file:org.onos.yangtools.yang.data.impl.codec.StringStringCodec.java

protected StringStringCodec(final StringTypeDefinition typeDef) {
    super(Optional.of(typeDef), String.class);
    typeDef.getLengthConstraints();
}

From source file:org.eclipse.mylyn.internal.wikitext.commonmark.inlines.AllCharactersSpan.java

@Override
public Optional<? extends Inline> createInline(Cursor cursor) {
    return Optional.of(new Characters(cursor.getLineAtOffset(), cursor.getOffset(), 1,
            Character.toString(cursor.getChar())));
}

From source file:harp.util.FileUtil.java

/**
 * Find a file with the given base name, searching upward from the given starting directory.
 *
 * @param filename the base filename to look for
 * @param startingPath the starting directory to search upward from
 *
 * @return an {@code Optional} containing the Path of the file if found, or an empty Optional
 *     otherwise/*from www .j av a 2  s  . c  o  m*/
 */
public static Optional<Path> findUpward(String filename, Path startingPath) {
    Preconditions.checkNotNull(filename);
    Preconditions.checkArgument(!filename.contains(File.separator));
    Preconditions.checkArgument(Files.isDirectory(startingPath));
    Path possibleRootDir = startingPath;
    while (possibleRootDir != null) {
        Path possiblePath = possibleRootDir.resolve(filename);
        if (Files.isRegularFile(possiblePath)) {
            return Optional.of(possiblePath);
        } else {
            possibleRootDir = possibleRootDir.getParent();
        }
    }
    return Optional.absent();
}

From source file:com.google.javascript.jscomp.JsCheckerHelper.java

static Optional<String> convertPathToModuleName(String path, Iterable<String> roots) {
    checkArgument(!path.startsWith("/"));
    if (!path.endsWith(".js") && !path.endsWith(".zip")) {
        return Optional.absent();
    }/*from   w  w w .j  a  v a 2 s.c o m*/
    String module = path;
    for (String root : roots) {
        if (module.startsWith(root + "/")) {
            module = module.substring(root.length() + 1);
            break;
        }
    }

    String moduleOrZipName = module.split("!")[0];
    return Optional.of("/" + moduleOrZipName);
}

From source file:org.locationtech.geogig.di.PluginDefaults.java

public PluginDefaults(VersionedFormat objects, VersionedFormat refs, VersionedFormat graph) {
    this.refs = Optional.of(refs);
    this.objects = Optional.of(objects);
    this.graph = Optional.of(graph);
}

From source file:edu.ksu.cis.santos.mdcf.dml.ast.exp.Exp.java

Exp(final Type type) {
    this.type = Optional.of(type);
}

From source file:org.apache.james.transport.mailets.remoteDelivery.ExecutionResult.java

public static ExecutionResult temporaryFailure(Exception e) {
    return new ExecutionResult(ExecutionState.TEMPORARY_FAILURE, Optional.of(e));
}