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

Introduction

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

Prototype

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

Source Link

Document

Combines multiple iterators into a single iterator.

Usage

From source file:jflowmap.data.TupleStats.java

@SuppressWarnings("unchecked")
public static SeqStat createFor(Iterator<TupleSet> it, Iterator<String> attrNameIt) {
    List<Iterator<Double>> iterators = Lists.newArrayList();
    while (it.hasNext()) {
        assert attrNameIt.hasNext();
        iterators.add(attrValuesIterator(it.next().tuples(), attrNameIt.next()));
    }//  w  ww .  j  a v  a 2s .  c  o  m
    assert !attrNameIt.hasNext();
    return SeqStat.createFor(Iterators.concat(iterators.iterator()));
}

From source file:ch.ethz.inf.vs.hypermedia.client.utils.DFSCrawler.java

@Override
public Iterator<B> buildIterator() {
    if (isPostOrder()) {
        Set<Object> visited = new HashSet<>();
        return Iterators.concat(Iterators.transform(getFilteredIterator(visited, start.iterator()),
                (item) -> process(item, visited)));
    } else {// w  w  w .j  av  a  2s .  c  o  m
        Set<Object> visited = new HashSet<>();
        return Iterators.concat(Iterators.transform(getFilteredIterator(visited, start.iterator()),
                (item) -> process(item, visited)));
    }
}

From source file:net.daporkchop.toobeetooteebot.text.TextComponentBase.java

/**
 * Creates an iterator that iterates over the given components, returning deep copies of each component in turn so
 * that the properties of the returned objects will remain externally consistent after being returned.
 *//*from   w w  w . j  a va 2  s.c o  m*/
public static Iterator<ITextComponent> createDeepCopyIterator(Iterable<ITextComponent> components) {
    Iterator<ITextComponent> iterator = Iterators.concat(Iterators.transform(components.iterator(),
            new Function<ITextComponent, Iterator<ITextComponent>>() {
                public Iterator<ITextComponent> apply(ITextComponent p_apply_1_) {
                    return p_apply_1_.iterator();
                }
            }));
    iterator = Iterators.transform(iterator, new Function<ITextComponent, ITextComponent>() {
        public ITextComponent apply(ITextComponent p_apply_1_) {
            ITextComponent itextcomponent = p_apply_1_.createCopy();
            itextcomponent.setStyle(itextcomponent.getStyle().createDeepCopy());
            return itextcomponent;
        }
    });
    return iterator;
}

From source file:opennlp.fieldspring.tr.text.StreamCorpus.java

public Iterator<Document<Token>> iterator() {
    if (this.read) {
        throw new UnsupportedOperationException("Cannot read a stream corpus more than once.");
    } else {/*  ww w .j  a  v  a2  s  .  com*/
        this.read = true;
        return Iterators.concat(this.sources.iterator());
    }
}

From source file:org.apache.kylin.metadata.tuple.CompoundTupleIterator.java

public CompoundTupleIterator(List<ITupleIterator> backends) {
    Preconditions.checkArgument(backends != null && backends.size() != 0, "backends not exists");
    this.backends = backends;
    this.compoundIterator = Iterators.concat(backends.iterator());
}

From source file:ch.ethz.inf.vs.hypermedia.corehal.LinkList.java

public Iterable<Link> linkValues() {
    return () -> Iterators.concat(Iterators.transform(values().iterator(), (x) -> x.iterator()));
}

From source file:org.sonar.css.tree.impl.CompoundSelectorTreeImpl.java

@Override
public Iterator<Tree> childrenIterator() {
    return Iterators.concat(selectors.iterator());
}

From source file:org.calrissian.mango.collect.CloseableIterators.java

/**
 * Combines multiple iterators into a single closeable iterator. The returned
 * closeable iterator iterates across the elements of each iterator in {@code inputs}.
 * The input iterators are not polled until necessary.
 *//*  w w  w  . j av a2 s .  c  o m*/
public static <T> CloseableIterator<T> concat(
        final CloseableIterator<? extends Iterator<? extends T>> iterators) {
    return wrap(Iterators.concat(iterators), iterators);
}

From source file:ch.ethz.inf.vs.hypermedia.client.utils.BFSCrawler.java

@Override
public Iterator<B> buildIterator() {
    Set<Object> visited = new HashSet<Object>();
    Queue<Iterable<B>> queue = new LinkedList<>();
    queue.add(() -> getFilteredIterator(visited, start.iterator()));
    Iterator<Iterator<B>> iterator = new AbstractIterator<Iterator<B>>() {
        @Override//from ww  w .j  av a2s  . c  om
        protected Iterator<B> computeNext() {
            if (queue.isEmpty())
                return endOfData();
            return queue.poll().iterator();
        }
    };
    return Iterators.transform(Iterators.concat(iterator), (item) -> process(item, queue, visited));
}

From source file:ch.ethz.inf.vs.hypermedia.corehal.LinkCollection.java

public Iterable<Link> getLinks(String key) {
    LinkList list = get(key);//from  w  ww . jav  a 2 s. c o  m
    if (list == null)
        return Collections.emptyList();
    return () -> Iterators.concat(Iterators.transform(list.values().iterator(), (x) -> x.iterator()));
}