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

Introduction

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

Prototype

public abstract T get();

Source Link

Document

Returns the contained instance, which must be present.

Usage

From source file:springfox.bean.validators.plugins.BeanValidators.java

@VisibleForTesting
static <T extends Annotation> Optional<T> annotationFrom(AnnotatedMember nullableMember,
        Class<T> annotationType) {

    Optional<AnnotatedMember> member = Optional.fromNullable(nullableMember);
    Optional<T> notNull = Optional.absent();
    if (member.isPresent()) {
        notNull = FluentIterable.from(member.get().annotations()).filter(annotationType).first();
    }/*from  w  ww . j  a va2 s  .  co m*/
    return notNull;
}

From source file:com.complexible.common.base.Optionals.java

public static <T, E extends Exception> T require(final Optional<T> theOptional, final Class<E> theExceptionType,
        final String theMsg) throws E {
    if (theOptional.isPresent()) {
        return theOptional.get();
    }//from ww w. j a  va  2  s  . co m

    try {
        throw theExceptionType.getConstructor(String.class).newInstance(theMsg);
    } catch (NoSuchMethodException e) {
        throw new RuntimeException("Invalid exception type provided");
    } catch (InvocationTargetException e) {
        throw new RuntimeException("Invalid exception type provided");
    } catch (InstantiationException e) {
        throw new RuntimeException("Invalid exception type provided");
    } catch (IllegalAccessException e) {
        throw new RuntimeException("Invalid exception type provided");
    }
}

From source file:org.locationtech.geogig.storage.sqlite.SQLiteStorage.java

/**
 * Returns the .geogig directory for the platform object.
 *//*from w w w  .jav  a  2  s .  co  m*/
public static File geogigDir(Platform platform) {
    Optional<URL> url = new ResolveGeogigDir(platform).call();
    if (!url.isPresent()) {
        throw new RuntimeException("Unable to resolve .geogig directory");
    }
    try {
        return new File(url.get().toURI());
    } catch (URISyntaxException e) {
        throw new RuntimeException("Error resolving .geogig directory", e);
    }
}

From source file:org.apache.cassandra.utils.progress.jmx.LegacyJMXProgressSupport.java

protected static Optional<int[]> getLegacyUserdata(String tag, ProgressEvent event) {
    Optional<Status> status = getStatus(event);
    if (status.isPresent()) {
        int[] result = new int[2];
        result[0] = getCmd(tag);/*from  ww w. j  a  v  a 2  s  .  co m*/
        result[1] = status.get().ordinal();
        return Optional.of(result);
    }
    return Optional.absent();
}

From source file:org.fenixedu.bennu.core.domain.groups.PersistentDynamicGroup.java

@Atomic(mode = TxMode.WRITE)
public static PersistentDynamicGroup set(final String name, PersistentGroup overridingGroup) {
    Optional<PersistentDynamicGroup> persistent = PersistentDynamicGroup.getInstance(name);
    if (persistent.isPresent()) {
        return persistent.get().changeGroup(overridingGroup);
    } else {/*from w w  w .ja v  a 2  s .c  o m*/
        return new PersistentDynamicGroup(name, overridingGroup);
    }
}

From source file:org.anhonesteffort.flock.sync.key.KeySyncUtil.java

private static Optional<HidingCalDavCollection> getKeyCollection(Context context, DavAccount account)
        throws PropertyParseException, DavException, IOException {
    HidingCalDavStore store = DavAccountHelper.getHidingCalDavStore(context, account, null);
    Optional<String> calendarHomeSet = store.getCalendarHomeSet();
    if (calendarHomeSet.isPresent())
        return store.getCollection(calendarHomeSet.get().concat(PATH_KEY_COLLECTION));

    return Optional.absent();
}

From source file:com.puppycrawl.tools.checkstyle.checks.naming.ParameterNameCheck.java

/**
 * Checks whether a method is annotated with Override annotation.
 * @param ast method parameter definition token.
 * @return true if a method is annotated with Override annotation.
 *//*from www .  j av  a2  s  .c  o m*/
private static boolean isOverriddenMethod(DetailAST ast) {
    boolean overridden = false;

    final DetailAST parent = ast.getParent().getParent();
    final Optional<DetailAST> annotation = Optional.fromNullable(parent.getFirstChild().getFirstChild());

    if (annotation.isPresent() && annotation.get().getType() == TokenTypes.ANNOTATION) {
        final Optional<DetailAST> overrideToken = Optional
                .fromNullable(annotation.get().findFirstToken(TokenTypes.IDENT));
        if (overrideToken.isPresent() && "Override".equals(overrideToken.get().getText())) {
            overridden = true;
        }
    }
    return overridden;
}

From source file:com.android.camera.settings.CameraPictureSizesCacher.java

/**
 * Return list of Sizes for provided cameraId.  Check first to see if we
 * have it in the cache for the current android.os.Build.
 * Note: This method calls Camera.open(), so the camera must be closed
 * before calling or null will be returned if sizes were not previously
 * cached./*from   w w  w  . ja v a 2  s. c o m*/
 *
 * @param cameraId cameraID we would like sizes for.
 * @param context valid android application context.
 * @return List of valid sizes, or null if the Camera can not be opened.
 */
public static List<Size> getSizesForCamera(int cameraId, Context context) {
    Optional<List<Size>> cachedSizes = getCachedSizesForCamera(cameraId, context);
    if (cachedSizes.isPresent()) {
        return cachedSizes.get();
    }

    // No cached value, so need to query Camera API.
    Camera thisCamera;
    try {
        thisCamera = Camera.open(cameraId);
    } catch (RuntimeException e) {
        // Camera open will fail if already open.
        return null;
    }
    if (thisCamera != null) {
        String key_build = PICTURE_SIZES_BUILD_KEY + cameraId;
        String key_sizes = PICTURE_SIZES_SIZES_KEY + cameraId;
        SharedPreferences defaultPrefs = PreferenceManager.getDefaultSharedPreferences(context);

        List<Size> sizes = Size.buildListFromCameraSizes(thisCamera.getParameters().getSupportedPictureSizes());
        thisCamera.release();
        SharedPreferences.Editor editor = defaultPrefs.edit();
        editor.putString(key_build, Build.DISPLAY);
        editor.putString(key_sizes, Size.listToString(sizes));
        editor.apply();
        return sizes;
    }
    return null;
}

From source file:org.opendaylight.protocol.bgp.rib.impl.CheckUtil.java

public static <R, T extends DataObject> R readData(final DataBroker dataBroker, final InstanceIdentifier<T> iid,
        final Function<T, R> function) throws ReadFailedException {
    AssertionError lastError = null;
    final Stopwatch sw = Stopwatch.createStarted();
    while (sw.elapsed(TimeUnit.SECONDS) <= TIMEOUT) {
        try (final ReadOnlyTransaction tx = dataBroker.newReadOnlyTransaction()) {
            final Optional<T> data = tx.read(LogicalDatastoreType.OPERATIONAL, iid).checkedGet();
            if (data.isPresent()) {
                try {
                    return function.apply(data.get());
                } catch (final AssertionError e) {
                    lastError = e;//from  www  .  j ava 2 s  .  co m
                    Uninterruptibles.sleepUninterruptibly(SLEEP_FOR, TimeUnit.MILLISECONDS);
                }
            }
        }
    }
    Assert.fail(lastError.getMessage());
    throw lastError;
}

From source file:org.opendaylight.netvirt.natservice.ha.WeightedCentralizedSwitchScheduler.java

public static NaptSwitches getNaptSwitches(DataBroker dataBroker) {
    InstanceIdentifier<NaptSwitches> id = InstanceIdentifier.builder(NaptSwitches.class).build();
    Optional<NaptSwitches> naptSwitches = NatUtil.read(dataBroker, LogicalDatastoreType.CONFIGURATION, id);
    return naptSwitches.isPresent() ? naptSwitches.get() : null;
}