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

Introduction

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

Prototype

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

Source Link

Document

Returns the first element in iterable that satisfies the given predicate; use this method only when such an element is known to exist.

Usage

From source file:org.jclouds.vcloud.terremark.xml.KeyPairByNameHandler.java

@Override
public KeyPair getResult() {
    final String name = getRequest().getArgs().get(1).toString();
    try {/*from   w  ww.j  a v a  2s  .  c  o m*/
        return Iterables.find(handler.getResult(), new Predicate<KeyPair>() {

            @Override
            public boolean apply(KeyPair input) {
                return input.getName().equals(name);
            }

        });
    } catch (NoSuchElementException e) {
        logger.debug("keypair %s/%s not found in %s", getRequest().getArgs().get(0), name, handler.getResult());
        return null;
    }
}

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From source file:org.jclouds.collect.FindResourceInSet.java

public T apply(final F from) {
    try {//from www  . j  a  va 2s .c o  m
        return Iterables.find(set.get(), new Predicate<T>() {

            @Override
            public boolean apply(T input) {
                return matches(from, input);
            }

        });
    } catch (NoSuchElementException e) {
        logger.warn("could not find a match in set for %s", from);
    }
    return null;
}

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From source file:com.atlassian.jira.rest.client.api.domain.EntityHelper.java

public static <T extends NamedEntity> T findEntityByName(Iterable<T> entities, final String name) {
    try {//from   w ww .  ja v  a  2s .c o  m
        return Iterables.find(entities, HasNamePredicate.forName(name));
    } catch (NoSuchElementException ex) {
        throw new NoSuchElementException(
                String.format("Entity with name \"%s\" not found. Entities: %s", name, entities.toString()));
    }
}

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From source file:com.bennavetta.vetinari.template.TemplateLoader.java

@Inject
public TemplateLoader(VetinariContext context, Set<TemplateEngine> templateEngines) {
    this.context = context;
    this.templateEngines = templateEngines;
    this.defaultTemplateEngine = Iterables.find(this.templateEngines,
            t -> t.getName().equals(this.context.getSiteConfig().getString("defaultTemplateEngine")));

    this.templateCache = CacheBuilder.newBuilder().build(new CacheLoader<String, Template>() {
        @Override/*from w w  w.ja  v  a  2  s .  c  om*/
        public Template load(String templateName) throws Exception {
            final Path templatePath = context.getTemplateRoot().resolve(templateName);
            final String extension = getFileExtension(templateName);
            final TemplateEngine engine = Iterables
                    .tryFind(templateEngines, t -> Iterables.contains(t.getFileExtensions(), extension))
                    .or(defaultTemplateEngine);
            log.debug("Compiling template from {} with {}", templatePath, engine);
            String source = new String(Files.readAllBytes(templatePath), context.getContentEncoding());
            log.trace("Read template source \"{}\"", source);
            return engine.compile(source);
        }
    });
}

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From source file:org.openengsb.core.services.internal.TransformationHandler.java

/**
 * tries to find a method that method in the class {@code target} with the same name and the same number of
 * arguments. It's assumed that the arguments can then be transformed.
 *
 * @throws java.util.NoSuchElementException
 *          if no matching method can be found
 *//*from ww  w .  jav a2  s . c o m*/
protected static Method findTargetMethod(final Method sourceMethod, Class<?> target)
        throws NoSuchElementException {
    return Iterables.find(Arrays.asList(target.getMethods()), new Predicate<Method>() {
        @Override
        public boolean apply(Method element) {
            if (!sourceMethod.getName().equals(element.getName())) {
                return false;
            }
            if (sourceMethod.getParameterTypes().length != element.getParameterTypes().length) {
                return false;
            }
            return true;
        }
    });
}

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From source file:com.freiheit.fuava.simplebatch.result.ComposedResult.java

/**
 * If there are no results, fail. If there is one successful result, return
 * success. Add warnings for any values that exceed.
 *///from  w w  w .j a v a 2s  .co  m
public Result<A, B> compose(final Iterable<? extends Result<?, B>> results) {
    if (results == null || Iterables.isEmpty(results)) {
        return builder.withFailureMessage(
                "No intermediate results found. Intermediate input was " + intermediateValue).failed();
    }
    final Result<?, B> firstSuccess = Iterables.find(results, Result::isSuccess);
    for (final Result<?, B> r : results) {
        // add everything that was accumulated in the composed results
        builder.withFailureMessages(r.getFailureMessages()).withWarningMessages(r.getWarningMessages())
                .withThrowables(r.getThrowables());
    }
    if (firstSuccess == null) {
        return builder.failed();
    }
    return builder.withOutput(firstSuccess.getOutput()).success();
}

---

From source file:org.jclouds.trmk.vcloud_0_8.xml.KeyPairByNameHandler.java

@Override
public KeyPair getResult() {
    final String name = getRequest().getInvocation().getArgs().get(1).toString();
    try {/* w  w w  . j av  a  2s  . co m*/
        return Iterables.find(handler.getResult(), new Predicate<KeyPair>() {

            @Override
            public boolean apply(KeyPair input) {
                return input.getName().equals(name);
            }

        });
    } catch (NoSuchElementException e) {
        logger.debug("keypair %s/%s not found in %s", getRequest().getInvocation().getArgs().get(0), name,
                handler.getResult());
        return null;
    }
}

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From source file:org.sonar.batch.debt.DebtModelProvider.java

private static CharacteristicDto characteristicById(final int id, List<CharacteristicDto> allCharacteristics) {
    return Iterables.find(allCharacteristics, new Predicate<CharacteristicDto>() {
        @Override/*from  w  ww  .j a v a  2s  .c  om*/
        public boolean apply(@Nullable CharacteristicDto input) {
            return input != null && id == input.getId();
        }
    });
}

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From source file:org.midonet.client.resource.ResourceCollection.java

/**
 * Finds a resource by the given key and value for the resource model.
 *
 * @param key   attribute name (case insensitive)
 * @param value value to look for/*from  w  ww .j a v a  2 s.  c  o  m*/
 * @return First matched element
 */
@Deprecated // TODO: let client use find() method defined below.
public E findBy(final String key, final Object value) {
    final String keyGetter = ("get" + key).toLowerCase();
    // this extends forwarding list, therefore should be Iterable.
    @SuppressWarnings("unchecked")
    E result = Iterables.find((Iterable<E>) this, new Predicate<E>() {
        @Override
        public boolean apply(E input) {
            Method[] methods = input.getClass().getMethods();
            for (Method m : methods) { // O(n) but should be small.
                if (m.getName().toLowerCase().equals(keyGetter)) {
                    try {
                        //Getter method of the value should return
                        @SuppressWarnings("unchecked")
                        Object data = m.invoke(input, new Object[] {});
                        if (data == null) {
                            return data == value;
                        }
                        return data.equals(value);
                    } catch (IllegalAccessException e) {
                        e.printStackTrace();
                    } catch (InvocationTargetException e) {
                        e.printStackTrace();
                    }
                }
            }
            throw new IllegalArgumentException(
                    "No matched entry found " + "for searching key=" + key + "value=" + value);
        }
    });
    return result;
}

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From source file:org.eclipse.xtext.ui.refactoring.impl.ProjectUtil.java

/**
 * @return null if there is no such file or the file is not editable
 *///from w w w .  j  ava 2 s .co  m
public IFile findFileStorage(final URI uri, final boolean validateEdit) {
    Iterable<Pair<IStorage, IProject>> storages = mapper.getStorages(uri);
    try {
        Pair<IStorage, IProject> fileStorage = Iterables.find(storages,
                new Predicate<Pair<IStorage, IProject>>() {
                    @Override
                    public boolean apply(Pair<IStorage, IProject> input) {
                        IStorage storage = input.getFirst();
                        if (storage instanceof IFile) {
                            IFile file = (IFile) storage;
                            return file.isAccessible() && (!validateEdit || !file.isReadOnly()
                                    || workspace.validateEdit(new IFile[] { file }, null).isOK());
                        }
                        return false;
                    }
                });
        return (IFile) fileStorage.getFirst();
    } catch (NoSuchElementException e) {
        return null;
    }
}

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