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

Introduction

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

Prototype

public abstract boolean isPresent();

Source Link

Document

Returns true if this holder contains a (non-null) instance.

Usage

From source file:de.azapps.tools.OptionalUtils.java

public static <F> void withOptional(@NonNull final Optional<F> optional,
        @NonNull final Procedure<F> procedure) {
    if (optional.isPresent()) {
        procedure.apply(optional.get());
    }/*from  w  w  w.  jav  a 2s  .  c om*/
}

From source file:org.opendaylight.controller.md.sal.dom.store.impl.tree.TreeNodeUtils.java

public static <T extends StoreTreeNode<T>> Optional<T> getChild(final Optional<T> parent,
        final PathArgument child) {
    if (parent.isPresent()) {
        return parent.get().getChild(child);
    }/*w w  w  . j  a v  a  2 s. co  m*/
    return Optional.absent();
}

From source file:org.eclipse.recommenders.codesearch.rcp.index.indexer.BindingHelper.java

public static Optional<String> getIdentifier(final IMethodBinding b) {
    if (b == null) {
        return absent();
    }/*from  ww  w .jav a2s .c o m*/
    final Optional<IMethodName> opt = BindingUtils.toMethodName(b);
    if (!opt.isPresent()) {
        return absent();
    }
    return of(opt.get().getIdentifier());
}

From source file:gobblin.compliance.utils.DatasetUtils.java

public static String getProperty(HivePartitionDataset dataset, String property, long defaultValue) {
    Optional<String> propertyValueOptional = Optional.fromNullable(dataset.getParams().get(property));
    if (!propertyValueOptional.isPresent()) {
        return Long.toString(defaultValue);
    }//  w w w  . j a  v a2s.com
    try {
        long propertyVal = Long.parseLong(propertyValueOptional.get());
        if (propertyVal < 0) {
            return Long.toString(defaultValue);
        } else {
            return Long.toString(propertyVal);
        }
    } catch (NumberFormatException e) {
        return Long.toString(defaultValue);
    }
}

From source file:com.arpnetworking.clusteraggregator.AggDataUnifier.java

private static Optional<Unit> getSmaller(final Optional<Unit> a, final Optional<Unit> b) {
    if (a.isPresent() && b.isPresent()) {
        return a.get().isSmallerThan(b.get()) ? a : b;
    } else {/*from   w w  w  .  j  a v  a 2 s  . c om*/
        return a.or(b);
    }
}

From source file:com.google.gerrit.server.query.change.IsReviewedPredicate.java

@SuppressWarnings("deprecation")
private static FieldDef<ChangeData, ?> getField(Schema<ChangeData> schema) {
    Optional<FieldDef<ChangeData, ?>> f = schema.getField(REVIEWEDBY, LEGACY_REVIEWED);
    checkState(f.isPresent(), "Schema %s missing field %s", schema.getVersion(), REVIEWEDBY.getName());
    return f.get();
}

From source file:springfox.documentation.swagger.readers.parameter.ParameterAnnotationReader.java

@SuppressWarnings("unchecked")
private static <A extends Annotation> A searchOnInterfaces(Method method, int parameterIndex,
        Class<A> annotationType, Class<?>[] interfaces) {

    A annotation = null;//from  w w w . j  a  v  a  2 s  .c o m
    for (Class<?> interfaze : interfaces) {
        Optional<Method> interfaceMethod = interfaceMethod(interfaze, method);
        if (interfaceMethod.isPresent()) {
            Method superMethod = interfaceMethod.get();
            Optional<Annotation> found = tryFind(
                    newArrayList(superMethod.getParameterAnnotations()[parameterIndex]),
                    annotationOfType(annotationType));
            if (found.isPresent()) {
                annotation = (A) found.get();
                break;
            }
            Class<?>[] superInterfaces = superMethod.getDeclaringClass().getInterfaces();
            annotation = searchOnInterfaces(superMethod, parameterIndex, annotationType, superInterfaces);
        }
    }
    return annotation;
}

From source file:org.opendaylight.alto.basic.simpleird.SimpleIrdUtils.java

public static IrdInstance readInstance(ResourceId instanceId, ReadTransaction rx)
        throws InterruptedException, ExecutionException {
    InstanceIdentifier<IrdInstance> iid = getInstanceIID(instanceId);

    Optional<IrdInstance> instance = rx.read(LogicalDatastoreType.OPERATIONAL, iid).get();
    if (instance.isPresent()) {
        return instance.get();
    }/*from  w w  w  .j a v  a 2s.c om*/
    return null;
}

From source file:org.opendaylight.yangtools.yang.data.api.schema.tree.StoreTreeNodes.java

public static <T extends StoreTreeNode<T>> T findNodeChecked(final T tree, final YangInstanceIdentifier path) {
    T current = tree;/*from  w w  w. j  a v  a 2  s  . co m*/

    int i = 1;
    for (PathArgument pathArg : path.getPathArguments()) {
        Optional<T> potential = current.getChild(pathArg);
        if (!potential.isPresent()) {
            throw new IllegalArgumentException(
                    String.format("Child %s is not present in tree.", path.getAncestor(i)));
        }
        current = potential.get();
        ++i;
    }
    return current;
}

From source file:com.github.filosganga.geogson.model.Matchers.java

public static <T> Matcher<Optional<? extends T>> optionalThatContain(final Matcher<? extends T> matcher) {

    return new TypeSafeMatcher<Optional<? extends T>>() {
        @Override//from  w w w  . j  a  v a2  s  .c  o m
        protected boolean matchesSafely(Optional<? extends T> item) {
            return item.isPresent() && matcher.matches(item.get());
        }

        @Override
        public void describeTo(Description description) {
            description.appendText("Optional that contains ").appendDescriptionOf(matcher);
        }
    };

}