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:org.locationtech.geogig.api.plumbing.diff.DefaultGeometryDiffImpl.java

public DefaultGeometryDiffImpl(String s) {
    String[] tokens = s.split("\t");
    Preconditions.checkArgument(tokens.length == 2, "Wrong difference definition:", s);
    oldGeom = Optional.fromNullable(
            (Geometry) TextValueSerializer.fromString(FieldType.forBinding(Geometry.class), tokens[0]));
    newGeom = Optional.fromNullable(
            (Geometry) TextValueSerializer.fromString(FieldType.forBinding(Geometry.class), tokens[1]));

}

From source file:org.envirocar.server.core.util.pagination.Paginated.java

public Paginated(Pagination current, long elements) {
    this.current = Optional.fromNullable(current);
    this.elements = elements;

    if (this.current.isPresent()) {
        this.last = this.current.get().last(this.elements);
        this.first = this.current.get().first(this.elements);
        this.prev = this.current.get().previous(this.elements);
        this.next = this.current.get().next(this.elements);
    } else {// ww  w .j  av a2s.  c o m
        Optional<Pagination> absent = Optional.absent();
        this.last = absent;
        this.first = absent;
        this.prev = absent;
        this.next = absent;
    }

}

From source file:io.macgyver.core.resource.ResourceProvider.java

public Optional<Resource> findResourceByHash(String hash) throws IOException {
    for (Resource r : findResources()) {
        if (r.getHash().equals(hash)) {
            return Optional.fromNullable(r);
        }/*from   ww w  . j  a v a  2s  .  c  o  m*/
    }
    return Optional.absent();
}

From source file:flipkart.mongo.replicator.core.model.ReplicationEvent.java

public ReplicationEvent(String operation, BsonTimestamp v, long h, String namespace, Document eventData,
        Document objectId) {/*ww w . j a  v a2 s .  c o  m*/
    this.v = v;
    this.h = h;
    this.eventData = eventData;
    this.objectId = Optional.fromNullable(objectId);
    this.namespace = namespace;
    String[] namespaceSplit = namespace.split("\\.", 2);
    this.databaseName = namespaceSplit[0];
    this.collectionName = namespaceSplit[1];
    this.operation = getOperationType(operation, eventData);
}

From source file:com.preferanser.server.dao.objectify.Ofy.java

public <T> Optional<T> get(Key<T> key) {
    return Optional.fromNullable(load().key(key).now());
}

From source file:org.croudtrip.db.BasicCredentialsDAO.java

public Optional<BasicCredentials> findByUserId(long userId) {
    return Optional.fromNullable(uniqueResult(namedQuery(BasicCredentials.QUERY_NAME_FIND_BY_USER_ID)
            .setParameter(BasicCredentials.QUERY_PARAM_USER_ID, userId)));
}

From source file:org.basepom.mojo.propertyhelper.beans.DateDefinition.java

public Optional<Long> getValue() {
    return Optional.fromNullable(value);
}

From source file:org.apache.james.core.filesystem.SimpleUrl.java

private static void extractComponents(String urlWithUnixSeparators) {
    Matcher m = URL_REGEXP.matcher(urlWithUnixSeparators);
    m.matches();/*from   w  w w .  j a v a 2s.  com*/
    protocol = Optional.fromNullable(m.group(1)).or("");
    path = Optional.fromNullable(m.group(2)).or("");
}

From source file:org.apache.aurora.scheduler.updater.InstanceActionHandler.java

static Optional<IScheduledTask> getExistingTask(MutableStoreProvider storeProvider, IInstanceKey instance) {

    return Optional.fromNullable(Iterables.getOnlyElement(
            storeProvider.getTaskStore().fetchTasks(Query.instanceScoped(instance).active()), null));
}

From source file:org.geogit.api.Remote.java

/**
 * Constructs a new remote with the given parameters.
 * //from ww w.  j  av  a  2 s .c om
 * @param name the name of the remote
 * @param fetchurl the fetch URL of the remote
 * @param pushurl the push URL of the remote
 * @param fetch the fetch string of the remote
 * @param mapped whether or not this remote is mapped
 * @param mappedBranch the branch the remote is mapped to
 */
public Remote(String name, String fetchurl, String pushurl, String fetch, boolean mapped,
        @Nullable String mappedBranch) {
    this.name = name;
    this.fetchurl = checkURL(fetchurl);
    this.pushurl = checkURL(pushurl);
    this.fetch = fetch;
    this.mapped = mapped;
    this.mappedBranch = Optional.fromNullable(mappedBranch).or("*");
}