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.opennms.lucidity.Util.java

/**
 * Return a class's no-argument constructor, or {@link Optional#absent()} no such constructor
 * exists.//from  www.  j a  v  a  2  s . co m
 *
 * @param cls
 *            the Class
 * @return Optional no-argument constructor
 */
static <T> Optional<Constructor<T>> getNoArgConstructor(Class<T> cls) {
    Constructor<T> ctor;
    try {
        ctor = cls.getDeclaredConstructor();
    } catch (NoSuchMethodException | SecurityException e) {
        return Optional.absent();
    }
    return Optional.of(ctor);
}

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

public Optional<Node> findNode(String host, int port) {
    for (Node node : nodes) {
        if (node.host.equals(host) && node.port == port) {
            return Optional.of(node);
        }//  ww w . j a v a 2s.  c o m
    }
    return Optional.absent();
}

From source file:org.sosy_lab.cpachecker.core.algorithm.testgen.util.CFAUtils2.java

/**
 * same as {@link #getAlternativeLeavingEdge(CFAEdge)}, but allows specification of the given edge.
 * Its expected that wrongEdge is a leaving edge of node, but its not checked.
 * @param decidingNode/*from  w  w  w . ja v  a  2 s.c  o  m*/
 * @param wrongEdge
 * @return
 */
public static Optional<CFAEdge> getAlternativeLeavingEdge(CFANode node, CFAEdge wrongEdge) {
    for (CFAEdge cfaEdge : CFAUtils.leavingEdges(node)) {
        if (cfaEdge.equals(wrongEdge)) {
            continue;
        } else {
            return Optional.of(cfaEdge);
        }
    }
    return Optional.absent();
}

From source file:org.locationtech.geogig.rest.repository.SingleRepositoryProvider.java

@Override
public Optional<Repository> getGeogig(Request request) {
    return Optional.of(repo);
}

From source file:cc.ilo.cc.ilo.pipeline.producer.IterableProducer.java

@Override
public synchronized Optional<T> getNext() throws InterruptedException {
    if (iterator.hasNext() && !stopped) {
        return Optional.of(iterator.next());
    } else {/*from   ww w  . j a  v  a  2  s.  c  o m*/
        return Optional.absent();
    }
}

From source file:org.gradle.api.reporting.model.internal.BasicStringNodeDescriptor.java

@Override
public Optional<String> value(ModelNode modelNode) {
    if (modelNode.getLinkCount() == 0) {
        MutableModelNode modelElementNode = (MutableModelNode) modelNode;
        Object privateData = modelElementNode.getPrivateData();
        return Optional.of(privateData.toString());
    }/* ww  w .j av  a 2s .co m*/
    return Optional.absent();
}

From source file:com.dangdang.ddframe.rdb.sharding.parser.result.merger.GroupByColumn.java

public GroupByColumn(final Optional<String> owner, final String name, final Optional<String> alias,
        final OrderByType orderByType) {
    super(owner, Optional.of(name), alias, orderByType);
}

From source file:org.sitemap4j.sitemapindex.SiteMapLocation.java

public SiteMapLocation(final URI location, final DateTime lastModificationTime) {
    checkNotNull(location);/*from   w w  w. j a  va 2  s.co m*/

    this.location = location;

    if (lastModificationTime != null) {
        this.lastModificationTime = Optional.of(lastModificationTime);
    } else {
        this.lastModificationTime = Optional.absent();
    }
}

From source file:net.caseif.flint.common.util.helper.JsonHelper.java

public static Optional<JsonObject> readJson(File file) throws IllegalArgumentException, IOException {
    if (file.exists()) {
        try (FileReader reader = new FileReader(file)) {
            JsonElement el = new JsonParser().parse(reader);
            if (el.isJsonObject()) {
                return Optional.of(el.getAsJsonObject());
            }// w ww .  jav a  2  s .  co  m
        }
    }
    return Optional.absent();
}

From source file:com.sleepcamel.bsoneer.processor.domain.ModelExt.java

public static Optional<TypeElement> findTopLevelType(Element e) {
    while (e != null && !isTopLevelType(e)) {
        e = e.getEnclosingElement();// w ww  . j  a v  a2 s  .c om
    }
    return Optional.of((TypeElement) e);
}