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:alluxio.util.UnixMountInfo.java

private UnixMountInfo(String deviceSpec, String mountPoint, String fsType, Options options) {
    mDeviceSpec = Optional.fromNullable(deviceSpec);
    mMountPoint = Optional.fromNullable(mountPoint);
    mFsType = Optional.fromNullable(fsType);
    mMountOptions = options;/* w  w w .j  a v  a2  s.c o m*/
}

From source file:com.gwtplatform.dispatch.rest.rebind.parameter.HttpParameter.java

public HttpParameter(JParameter parameter, HttpParameterType type, String name, String dateFormat) {
    super(parameter);

    this.type = type;
    this.name = name;
    this.dateFormat = Optional.fromNullable(dateFormat);
}

From source file:org.locationtech.geogig.plumbing.diff.DiffPathTracker.java

public Optional<Node> currentLeftTree() {
    return Optional.fromNullable(leftTrees.peek());
}

From source file:si.arnes.dropbookmarks.db.BookmarkDAO.java

/**
 * Finds a bookmark by its id./*from  w w w. j  a  v a  2s .  c  o m*/
 *
 * @param id id of a bookmark
 * @return a bookmark with specified id
 */
public Optional<Bookmark> findById(long id) {
    return Optional.fromNullable(get(id));
}

From source file:de.flapdoodle.javaparser.parboiled.helper.ParameterWithChild.java

@Override
protected Optional<AbstractParameter> child() {
    return Optional.fromNullable(_child);
}

From source file:google.registry.model.UpdateAutoTimestamp.java

/** Returns the timestamp, or {@link #START_OF_TIME} if it's null. */
public DateTime getTimestamp() {
    return Optional.fromNullable(timestamp).or(START_OF_TIME);
}

From source file:se.sics.dozy.DozyResult.java

public static DozyResult ok(Object value) {
    return new DozyResult(Status.OK, Optional.absent(), Optional.fromNullable(value));
}

From source file:net.wouterdanes.docker.provider.model.BuiltImageInfo.java

public BuiltImageInfo(final String imageId, ImageBuildConfiguration imageConfig) {
    this.imageId = imageId;
    this.startId = imageConfig.getId();
    this.registry = Optional.fromNullable(imageConfig.getRegistry());
    this.keepAfterStopping = imageConfig.isKeep() || imageConfig.isPush();
}

From source file:org.ctoolkit.services.endpoints.TransformerHelper.java

/**
 * Converts to <code>String</code> value if presented.
 *
 * @param map the map of properties taken from input JSON
 * @param key the JSON property as a key
 * @return the optional <code>String</code> value
 *//*from   w ww.ja va 2s  .c o m*/
public static Optional<String> getString(Map<String, Object> map, String key) {
    checkNotNull(key);
    return Optional.fromNullable((String) map.get(key));
}

From source file:de.zalando.hackweek.bpm.engine.impl.cassandra.db.handler.SelectTaskByIdHandler.java

@Override
public Object selectOne(final Session session, final Object parameter) {
    final String id = (String) parameter;

    final Optional<Row> optionalResult = Optional.fromNullable(session.execute(QUERY, id).one());

    return optionalResult.transform(TaskMapping.INSTANCE).orNull();
}