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

Introduction

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

Prototype

public static <T> Optional<T> fromNullable(@Nullable T nullableReference)

Source Link

Document

If nullableReference is non-null, returns an Optional instance containing that reference; otherwise returns Optional#absent .

Usage

From source file:com.facebook.buck.shell.ExportFileBuilder.java

public ExportFileBuilder setSrc(@Nullable SourcePath path) {
    arg.src = Optional.fromNullable(path);
    return this;
}

From source file:de.flapdoodle.javaparser.tree.Source.java

public Source(Marker marker, JavaPackage jpackage, List<Import> imports, List<AbstractType> types) {
    super(marker);
    _types = ImmutableList.copyOf(types);
    _jpackage = Optional.fromNullable(jpackage);
    _imports = ImmutableList.copyOf(imports);
}

From source file:com.github.jeluard.extend.osgi.OSGILoader.java

private static <T> T setIfAbsentAndReturn(final AtomicReference<Optional<T>> reference,
        final Supplier<T> callable) {
    //TODO conc./*from  ww  w  .  j av  a 2 s.  c  om*/
    final Optional<T> optionalValue = reference.get();
    if (optionalValue.isPresent()) {
        return optionalValue.get();
    }

    final T value = callable.get();
    reference.set(Optional.fromNullable(value));
    return value;
}

From source file:com.googlecode.wmbutil.messages.LocalEnvironment.java

/**
 * Wrap an existing local environment message, note that this is not the
 * same {@link MbMessage} as the one containing your data
 *
 * @param msg The message to wrap/*from  w w w  . j  a  v a 2  s. co m*/
 * @return The wrapped message
 * @throws MbException
 */
public static Optional<LocalEnvironment> tryWrap(MbMessage msg) throws MbException {
    return Optional.fromNullable(checkNotNull(msg).getRootElement())
            .transform(new Function<MbElement, LocalEnvironment>() {
                @Override
                public LocalEnvironment apply(MbElement input) {
                    return new LocalEnvironment(input);
                }
            });
}

From source file:io.pelle.mango.client.gwt.modules.hierarchical.HierarchicalTreeModuleUI.java

public HierarchicalTreeModuleUI(HierarchicalTreeModule module) {
    super(module, HierarchicalTreeModule.MODULE_ID);

    scrollPanel.setHeight(Window.getClientHeight() / 2 + "px");
    scrollPanel.setWidth("100%");

    HierarchicalTree hierarchicalTree = new HierarchicalTree(module.getHierarchicalConfiguration(),
            Optional.fromNullable(getModule().getShowAddNodes()).or(true),
            getModule().getNodeActivatedHandler());
    hierarchicalTree.setWidth("100%");
    scrollPanel.add(hierarchicalTree);//ww w. j  a va 2s.  c  o m
}

From source file:com.facebook.buck.testutil.FakeReadonlyProjectFilesystem.java

@Override
public Optional<String> readFileIfItExists(Path path) {
    String content = files.get(path.normalize().toString());
    return Optional.fromNullable(content);
}

From source file:org.terasology.cities.model.MedievalTown.java

/**
 * @return the town wall, if available
 */
public Optional<TownWall> getTownWall() {
    return Optional.fromNullable(townWall);
}

From source file:com.pipeline.container.MapContainer.java

@Override
public Optional<ByteArray> get(ByteArray key) {
    return Optional.fromNullable(container.get(key));
}

From source file:org.gradle.ide.xcode.internal.xcodeproj.PBXFileReference.java

public PBXFileReference(String name, String path, SourceTree sourceTree) {
    super(name, path, sourceTree);

    // this is necessary to prevent O(n^2) behavior in xcode project loading
    String fileType = FileTypes.FILE_EXTENSION_TO_UTI.get(Files.getFileExtension(name));
    explicitFileType = Optional.fromNullable(fileType);
    lastKnownFileType = Optional.absent();
}

From source file:com.palantir.atlasdb.keyvalue.api.SweepResults.java

public Optional<byte[]> getNextStartRow() {
    return Optional.fromNullable(nextStartRow);
}