Example usage for com.google.common.collect Iterables tryFind

Introduction

In this page you can find the example usage for com.google.common.collect Iterables tryFind.

Prototype

public static <T> Optional<T> tryFind(Iterable<T> iterable, Predicate<? super T> predicate)

Source Link

Document

Returns an Optional containing the first element in iterable that satisfies the given predicate, if such an element exists.

Usage

From source file:org.killbill.automaton.DefaultStateMachine.java

public DefaultTransition findTransition(final State initialState, final Operation operation,
        final OperationResult operationResult) throws MissingEntryException {
    try {/*  www. j a va  2 s . c o  m*/
        return Iterables.tryFind(ImmutableList.<DefaultTransition>copyOf(transitions),
                new Predicate<DefaultTransition>() {
                    @Override
                    public boolean apply(final DefaultTransition input) {
                        return input.getInitialState().getName().equals(initialState.getName())
                                && input.getOperation().getName().equals(operation.getName())
                                && input.getOperationResult().equals(operationResult);
                    }
                }).get();
    } catch (IllegalStateException e) {
        throw new MissingEntryException("Missing transition for initialState " + initialState.getName()
                + ", operation = " + operation.getName() + ", result = " + operationResult, e);
    }
}

From source file:org.apache.brooklyn.camp.spi.resolve.interpret.PlanInterpretationNode.java

/** convenience for interpreters, tests if nodes are not excluded, and if not:
 * for string nodes, true iff the current value starts with the given prefix;
 * for nodes which are currently maps or lists,
 * true iff not excluded and the value contains such an entry (key, in the case of map) */
public boolean matchesPrefix(String prefix) {
    if (isExcluded())
        return false;
    if (getNewValue() instanceof CharSequence)
        return getNewValue().toString().startsWith(prefix);
    if (getNewValue() instanceof Map)
        return Iterables
                .tryFind(((Map<?, ?>) getNewValue()).keySet(), StringPredicates.isStringStartingWith(prefix))
                .isPresent();/*w  w w.  j  a  va2  s .  com*/
    if (getNewValue() instanceof Iterable)
        return Iterables.tryFind((Iterable<?>) getNewValue(), StringPredicates.isStringStartingWith(prefix))
                .isPresent();
    return false;
}

From source file:org.jenkinsci.plugins.github.util.FluentIterableWrapper.java

/**
 * Returns an {@link Optional} containing the first element in this fluent iterable that
 * satisfies the given predicate, if such an element exists.
 *
 * <p><b>Warning:</b> avoid using a {@code predicate} that matches {@code null}. If {@code null}
 * is matched in this fluent iterable, a {@link NullPointerException} will be thrown.
 *//* ww w  . ja  v a 2 s  .c om*/
public final Optional<E> firstMatch(Predicate<? super E> predicate) {
    return Iterables.tryFind(iterable, predicate);
}

From source file:com.eucalyptus.ws.util.ErrorHandlerSupport.java

protected static Optional<Integer> getHttpResponseStatus(final Throwable t) {
    final QueryBindingInfo info = Ats.inClassHierarchy(t.getClass()).get(QueryBindingInfo.class);
    final Optional<Integer> status = info == null ? Optional.<Integer>absent() : Optional.of(info.statusCode());
    return Iterables.tryFind(Exceptions.causes(t), Predicates.instanceOf(HasHttpStatusCode.class))
            .transform(Functions.compose(HasHttpStatusCode.Utils.httpStatusCode(),
                    CollectionUtils.cast(HasHttpStatusCode.class)))
            .or(status);//from  w w w . j  av  a 2s.  c  o  m
}

From source file:org.apache.james.mailbox.inmemory.mail.InMemoryAnnotationMapper.java

private Predicate<MailboxAnnotation> getPredicateFilterByAll(final Set<MailboxAnnotationKey> keys) {
    return new Predicate<MailboxAnnotation>() {
        @Override/*from  w ww.j a  v a2s.  c  om*/
        public boolean apply(final MailboxAnnotation input) {
            return Iterables.tryFind(keys, filterAnnotationsByPrefix(input)).isPresent();
        }
    };
}

From source file:com.keetip.versio.service.impl.VersioningServiceImpl.java

private Optional<ResourceKey> resolveKey(final UUID projectId, final String resourceName) {
    return Iterables.tryFind(mResources.keySet(), new Predicate<ResourceKey>() {
        public boolean apply(ResourceKey key) {
            return key.matches(projectId, resourceName);
        }//from  ww w.j  av a2  s.com
    });
}

From source file:org.killbill.billing.entitlement.engine.core.EntitlementUtils.java

/**
 * @param externalKey   the bundle externalKey
 * @param tenantContext the context/*from   www.j  a v a  2s  .com*/
 * @return the id of the first subscription (BASE or STANDALONE) that is still active for that key
 */
public UUID getFirstActiveSubscriptionIdForKeyOrNull(final String externalKey,
        final InternalTenantContext tenantContext) {

    final Iterable<UUID> nonAddonUUIDs = subscriptionBaseInternalApi.getNonAOSubscriptionIdsForKey(externalKey,
            tenantContext);
    return Iterables.tryFind(nonAddonUUIDs, new Predicate<UUID>() {
        @Override
        public boolean apply(final UUID input) {
            final BlockingState state = dao.getBlockingStateForService(input, BlockingStateType.SUBSCRIPTION,
                    DefaultEntitlementService.ENTITLEMENT_SERVICE_NAME, tenantContext);
            return (state == null || !state.getStateName().equals(DefaultEntitlementApi.ENT_STATE_CANCELLED));
        }
    }).orNull();
}

From source file:com.eviware.loadui.groovy.util.GroovyComponentTestUtils.java

public static ComponentItem createComponent(final String componentName, ComponentItem component)
        throws ComponentCreationException {
    Optional<ComponentDescriptor> descriptorOptional = null;
    Predicate<ComponentDescriptor> predicate = new Predicate<ComponentDescriptor>() {
        @Override// ww w  . ja va 2 s  .  c om
        public boolean apply(ComponentDescriptor input) {
            return Objects.equal(componentName, input.getLabel());
        }
    };

    long deadline = System.currentTimeMillis() + 5000;
    synchronized (lock) {
        while (!(descriptorOptional = Iterables.tryFind(descriptors.keySet(), predicate)).isPresent()
                && System.currentTimeMillis() < deadline) {
            try {
                lock.wait(deadline - System.currentTimeMillis());
            } catch (InterruptedException e) {
                e.printStackTrace();
                Thread.currentThread().interrupt();
            }
        }
    }

    ComponentDescriptor descriptor = descriptorOptional.get();

    component.setAttribute(ComponentItem.TYPE, descriptor.getLabel());
    ComponentTestUtils.setComponentBehavior(component,
            descriptors.get(descriptor).createBehavior(descriptor, component.getContext()));

    return component;
}

From source file:org.n52.sos.ogc.sensorML.AbstractSensorML.java

public Optional<SmlClassifier> findClassifier(Predicate<SmlClassifier> predicate) {
    if (isSetClassifications()) {
        return Iterables.tryFind(this.classifications, predicate);
    } else {//from   w  w w.  ja v a  2 s  . c  o  m
        return Optional.absent();
    }
}

From source file:com.streamreduce.connections.ConnectionProviderFactory.java

public PushConnectionProvider pushConnectionProviderFromId(final String providerId) {
    return Iterables.tryFind(allPushConnectionProviders, new Predicate<PushConnectionProvider>() {
        @Override/* w  w  w.  j  a  v  a2 s.  c  o m*/
        public boolean apply(@Nullable PushConnectionProvider connectionProvider) {
            return connectionProvider != null && connectionProvider.getId().equals(providerId);
        }
    }).orNull();
}