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

Introduction

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

Prototype

public static <T> Optional<T> absent()

Source Link

Document

Returns an Optional instance with no contained reference.

Usage

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

public OrderByColumn(final String name, final OrderByType orderByType) {
    super(Optional.<String>absent(), Optional.of(name), Optional.<String>absent(), orderByType);
    index = Optional.absent();
}

From source file:org.opendaylight.controller.cluster.datastore.entityownership.AbstractEntityOwnerChangeListener.java

void init(final ShardDataTree shardDataTree) {
    shardDataTree.registerTreeChangeListener(EOS_PATH, this, Optional.absent(), noop -> {
        /* NOOP */ });
}

From source file:org.geogit.api.plumbing.LsRemote.java

/**
 * Constructs a new {@code LsRemote}.//from   w  w w  .j a va  2 s. c om
 */
@Inject
public LsRemote(Repository repository, DeduplicationService deduplicationService) {
    Optional<Remote> abstent = Optional.absent();
    this.remote = Suppliers.ofInstance(abstent);
    this.getHeads = true;
    this.getTags = true;
    this.localRepository = repository;
    this.deduplicationService = deduplicationService;
}

From source file:com.android.camera.one.v1.LegacyOneCameraManagerImpl.java

public static Optional<LegacyOneCameraManagerImpl> instance() {
    if (INSTANCE != null) {
        return INSTANCE;
    }//from   w  w  w  . j  a v a  2  s.  c  om

    int numberOfCameras;
    Camera.CameraInfo[] cameraInfos;
    try {
        numberOfCameras = Camera.getNumberOfCameras();
        cameraInfos = new Camera.CameraInfo[numberOfCameras];
        for (int i = 0; i < numberOfCameras; i++) {
            cameraInfos[i] = new Camera.CameraInfo();
            Camera.getCameraInfo(i, cameraInfos[i]);
        }
    } catch (RuntimeException ex) {
        Log.e(TAG, "Exception while creating CameraDeviceInfo", ex);
        return Optional.absent();
    }

    int firstFront = NO_DEVICE;
    int firstBack = NO_DEVICE;
    // Get the first (smallest) back and first front camera id.
    for (int i = numberOfCameras - 1; i >= 0; i--) {
        if (cameraInfos[i].facing == Camera.CameraInfo.CAMERA_FACING_BACK) {
            firstBack = i;
        } else {
            if (cameraInfos[i].facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
                firstFront = i;
            }
        }
    }

    CameraId frontCameraId = firstFront >= 0 ? CameraId.fromLegacyId(firstFront) : null;
    CameraId backCameraId = firstBack >= 0 ? CameraId.fromLegacyId(firstBack) : null;

    LegacyOneCameraManagerImpl cameraManager = new LegacyOneCameraManagerImpl(backCameraId, frontCameraId,
            cameraInfos);
    INSTANCE = Optional.of(cameraManager);
    return INSTANCE;
}

From source file:com.google.errorprone.matchers.method.ConstructorMatcherImpl.java

@Override
protected Optional<MatchState> matchResult(ExpressionTree tree, VisitorState state) {
    MethodSymbol sym = getConstructor(tree);
    if (sym == null) {
        return Optional.absent();
    }/*from   www  .  j a  va 2  s  .  c o m*/
    return Optional.of(MatchState.create(sym.owner.type, sym));
}

From source file:se.sics.ktoolbox.util.SerializerHelper.java

public static <V extends Object> Map<String, V> sKMFromBinary(Class<V> vClass, ByteBuf buf) {
    int nrE = buf.readInt();
    Map<String, V> map = new TreeMap<>();
    for (int i = 0; i < nrE; i++) {
        String mapKey = SerializerHelper.stringFromBinary(buf);
        V mapValue = (V) Serializers.lookupSerializer(vClass).fromBinary(buf, Optional.absent());
        map.put(mapKey, mapValue);/*from ww w. j  a  v a2 s . c  om*/
    }
    return map;
}

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

public static DozyResult timeout() {
    return new DozyResult(Status.TIMEOUT, Optional.absent());
}

From source file:org.sonar.server.computation.qualitygate.ConditionEvaluator.java

private static Optional<EvaluationResult> evaluateCondition(Condition condition,
        Comparable<?> measureComparable, Measure.Level alertLevel) {
    String conditionValue = getValueToEval(condition, alertLevel);
    if (StringUtils.isEmpty(conditionValue)) {
        return Optional.absent();
    }/*ww  w  .j  av a2 s.  com*/

    try {
        Comparable conditionComparable = parseConditionValue(condition.getMetric(), conditionValue);
        if (doesReachThresholds(measureComparable, conditionComparable, condition)) {
            return of(new EvaluationResult(alertLevel, measureComparable));
        }
        return Optional.absent();
    } catch (NumberFormatException badValueFormat) {
        throw new IllegalArgumentException(
                String.format("Quality Gate: Unable to parse value '%s' to compare against %s", conditionValue,
                        condition.getMetric().getName()));
    }
}

From source file:com.palantir.common.remoting.ServiceNotAvailableException.java

public ServiceNotAvailableException(String message, Throwable cause) {
    super(message, cause);
    this.serviceHint = Optional.absent();
}

From source file:com.github.rinde.rinsim.experiment.DefaultMASConfiguration.java

@Override
public Optional<? extends Creator<AddDepotEvent>> getDepotCreator() {
    return Optional.absent();
}