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.jmingo.util.ReflectionUtils.java

/**
 * Gets a method by name ignoring case. Be careful, this method returns first matched method.
 *
 * @param type the class to be searched//  www  .j  a  va  2s. c o m
 * @param name the method name
 * @return the first first method from {@code type} that satisfies the given name or null if no method
 * in {@code type} matches the given name
 */
public static Method getMethodByName(Class<?> type, String name) {
    return Iterables.tryFind(Arrays.asList(type.getDeclaredMethods()),
            (Method method) -> org.apache.commons.lang3.StringUtils.equalsIgnoreCase(name, method.getName()))
            .orNull();
}

From source file:org.asoem.greyfish.utils.collect.Functionals.java

@SuppressWarnings("unchecked") // safe cast
public static <E> Optional<E> tryFind(final Iterable<E> iterable, final Predicate<? super E> predicate) {
    if (iterable instanceof Searchable) {
        return ((Searchable<E>) iterable).findFirst(predicate);
    } else {//  w ww .  j a va2s  .co  m
        return Iterables.tryFind(iterable, predicate);
    }
}

From source file:pt.ist.maidSyncher.utils.MiscUtils.java

public static SynchableObject findACObjectsById(long id, Class<? extends SynchableObject> clazz) {
    checkNotNull(clazz);//  ww w.  ja v  a  2  s  . c  o  m
    if (id <= 0)
        return null;
    MaidRoot maidRoot = MaidRoot.getInstance();
    PredicateFindGHObjectByClassAndId predicateFindGHObjectByClassAndId = new SynchableObject.ObjectFindStrategy.PredicateFindGHObjectByClassAndId(
            clazz, id);
    return Iterables.tryFind(maidRoot.getAcObjectsSet(), predicateFindGHObjectByClassAndId).get();

}

From source file:org.ow2.petals.cloud.manager.api.deployment.utils.NodeHelper.java

/**
 * Get a property from a set of properties or null if not found
 *
 * @param properties// w  ww  . j av a  2 s.  c om
 * @param name
 * @return
 */
public static final Property getProperty(List<Property> properties, final String name) {
    return Iterables.tryFind(properties, new Predicate<Property>() {
        public boolean apply(org.ow2.petals.cloud.manager.api.deployment.Property property) {
            return property != null && property.getName() != null && property.getName().equals(name);
        }
    }).orNull();
}

From source file:org.jmingo.util.ReflectionUtils.java

/**
 * Finds a method that satisfies the given predicate.
 *
 * @param type      the class to be searched
 * @param predicate the predicate/*w ww  .  j a v  a 2 s .  c o  m*/
 * @return the first first method from {@code type} that satisfies the given name or null if no method
 * in {@code type} matches the given name
 */
public static Method findMethod(Class<?> type, Predicate<Method> predicate) {
    return Iterables.tryFind(Arrays.asList(type.getDeclaredMethods()), predicate).orNull();
}

From source file:pt.ist.maidSyncher.domain.dsi.DSIMilestone.java

public ACMilestone getAcMilestone(final ACProject acProject) {
    Optional<ACMilestone> optionalMilestone = Iterables.tryFind(getAcMilestonesSet(),
            new Predicate<ACMilestone>() {
                @Override/* w w  w.  j a  v  a 2  s .c om*/
                public boolean apply(ACMilestone input) {
                    if (input == null)
                        return false;
                    return ObjectUtils.equals(input.getProject(), acProject);
                }
            });
    return optionalMilestone.orNull();
}

From source file:org.opendaylight.protocol.bgp.openconfig.impl.moduleconfig.DataBrokerFunction.java

public static <T extends ServiceRef & ChildOf<Module>> T getRibInstance(
        final BGPConfigModuleProvider configModuleOp, final Function<String, T> function,
        final String instanceName, final ReadOnlyTransaction rTx) {
    Preconditions.checkNotNull(rTx);/*from  w ww  . ja v  a 2s  .  c om*/
    try {
        final Optional<Service> maybeService = configModuleOp
                .readConfigService(new ServiceKey(DomAsyncDataBroker.class), rTx);
        if (maybeService.isPresent()) {
            final Optional<Instance> maybeInstance = Iterables.tryFind(maybeService.get().getInstance(),
                    new Predicate<Instance>() {
                        @Override
                        public boolean apply(final Instance instance) {
                            final String moduleName = OpenConfigUtil.getModuleName(instance.getProvider());
                            if (moduleName.equals(instanceName)) {
                                return true;
                            }
                            return false;
                        }
                    });
            if (maybeInstance.isPresent()) {
                return function.apply(maybeInstance.get().getName());
            }
        }
        return null;
    } catch (ReadFailedException e) {
        throw new IllegalStateException("Failed to read service.", e);
    }
}

From source file:com.greensopinion.swagger.jaxrsgen.mock.noswagger.model.ServerError.java

private String computeMessage(Throwable t) {
    Optional<Throwable> found = Iterables.tryFind(Throwables.getCausalChain(t), new Predicate<Throwable>() {

        @Override//from   ww w  .  ja  va  2s .  c  o m
        public boolean apply(Throwable input) {
            return input != null && !Strings.isNullOrEmpty(input.getMessage());
        }
    });
    if (found.isPresent()) {
        return found.get().getMessage();
    }
    return null;
}

From source file:org.asoem.greyfish.utils.collect.AbstractFunctionalList.java

@Override
public Optional<E> findFirst(final Predicate<? super E> predicate) {
    return Iterables.tryFind(this, predicate);
}

From source file:org.jmingo.util.DocumentUtils.java

private static Optional<Field> getIdField(List<Field> fields) {
    return Iterables.tryFind(fields, field -> field.isAnnotationPresent(Id.class));
}