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

Introduction

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

Prototype

public static <T> Iterable<T> concat(final Iterable<? extends Iterable<? extends T>> inputs)

Source Link

Document

Combines multiple iterables into a single iterable.

Usage

From source file:com.datacoper.maven.util.CollectionsUtil.java

@SuppressWarnings("unchecked")
public static <E, T extends Collection<E>> List<E> concat(T... collections) {
    Iterable<E> concat = Iterables.concat(collections);

    List<E> list = new ArrayList<>();
    concat.forEach(item -> {/*ww w .  j av a2s.  c  o m*/
        list.add(item);
    });

    return list;
}

From source file:com.ignorelist.kassandra.steam.scraper.GameInfo.java

public static Iterable<String> getAllTags(Iterable<GameInfo> gameInfos) {
    return Iterables.concat(gameInfos);
}

From source file:com.google.devtools.build.xcode.util.Interspersing.java

/**
 * Inserts {@code what} before each item in {@code sequence}, returning a lazy sequence of twice
 * the length.//from   w ww . j a v  a2s .c o m
 */
public static <E> Iterable<E> beforeEach(final E what, Iterable<E> sequence) {
    Preconditions.checkNotNull(what);
    return Iterables.concat(Iterables.transform(sequence, new Function<E, Iterable<E>>() {
        @Override
        public Iterable<E> apply(E element) {
            return ImmutableList.of(what, element);
        }
    }));
}

From source file:com.opengamma.core.position.impl.PortfolioMapper.java

public static <T> List<T> flatMap(PortfolioNode node, PortfolioMapperFunction<List<T>> fn) {
    MappingCallback<List<T>, List<List<T>>> callback = new MappingCallback<List<T>, List<List<T>>>(fn,
            new ArrayList<List<T>>());
    List<List<T>> values = getValues(node, callback);
    return Lists.newArrayList(Iterables.concat(values));
}

From source file:org.apache.cassandra.cql3.Terms.java

public static Iterable<Function> getFunctions(Iterable<Term> terms) {
    if (terms == null)
        return Collections.emptySet();

    return Iterables.concat(Iterables.transform(terms, TO_FUNCTION_ITERABLE));
}

From source file:com.metamx.common.guava.FunctionalIterable.java

public static <T> FunctionalIterable<T> fromConcatenation(Iterable<T>... delegates) {
    return new FunctionalIterable<>(Iterables.concat(delegates));
}

From source file:sg.atom.utils._beta.functional.FunctionalIterable.java

public static <T> FunctionalIterable<T> fromConcatenation(Iterable<T>... delegates) {
    return new FunctionalIterable<T>(Iterables.concat(delegates));
}

From source file:see.util.Reduce.java

/**
 * Apply a function to each element of a collection, and concatenate results.
 * Operation is lazy - collections won't be queried in process.
 *
 * @param initial initial collection//from  w  ww. ja  v a 2 s .com
 * @param f function, which from element of initial collection to separate collection
 * @param <A> initial collection type
 * @param <B> resulting collection type
 * @return lazy collection, formed from applying function and concatenating results.
 */
public static <A, B> Iterable<B> flatMap(Iterable<A> initial, Function<? super A, ? extends Iterable<B>> f) {
    return Iterables.concat(Iterables.transform(initial, f));
}

From source file:springfox.documentation.service.Tags.java

public static Set<Tag> toTags(Multimap<String, ApiListing> apiListings) {
    Iterable<ApiListing> allListings = Iterables.concat(nullToEmptyMultimap(apiListings).asMap().values());
    List<Tag> tags = from(allListings).transformAndConcat(collectTags()).toList();
    TreeSet<Tag> tagSet = newTreeSet(tagNameComparator());
    tagSet.addAll(tags);//from   w w w  .j  a va 2 s  .co m
    return tagSet;
}

From source file:com.metamx.common.guava.FunctionalIterable.java

public static <T> FunctionalIterable<T> fromConcatenation(Iterable<Iterable<T>> delegates) {
    return new FunctionalIterable<>(Iterables.concat(delegates));
}