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

Introduction

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

Prototype

public static <T> UnmodifiableIterator<T> singletonIterator(@Nullable final T value)

Source Link

Document

Returns an iterator containing only value .

Usage

From source file:org.sonar.pickbasic.tree.impl.statement.DoRepeatClauseTreeImpl.java

@Override
public Iterator<Tree> childrenIterator() {
    return Iterators.concat(Iterators.singletonIterator(doKeyword), statements.iterator(),
            Iterators.singletonIterator(repeatKeyword));
}

From source file:org.eclipse.viatra.query.runtime.localsearch.operations.extend.ExtendToEStructuralFeatureTarget.java

@SuppressWarnings("unchecked")
@Override/*from   w  w  w. java2  s.  c om*/
public void onInitialize(MatchingFrame frame, ISearchContext context) throws LocalSearchException {
    try {
        final EObject value = (EObject) frame.getValue(sourcePosition);
        if (!feature.getEContainingClass().isSuperTypeOf(value.eClass())) {
            // TODO planner should ensure the proper supertype relation
            it = Iterators.emptyIterator();
            return;
        }
        final Object featureValue = value.eGet(feature);
        if (feature.isMany()) {
            if (featureValue != null) {
                final Collection<Object> objectCollection = (Collection<Object>) featureValue;
                it = objectCollection.iterator();
            } else {
                it = Iterators.emptyIterator();
            }
        } else {
            if (featureValue != null) {
                it = Iterators.singletonIterator(featureValue);
            } else {
                it = Iterators.emptyIterator();
            }
        }
    } catch (ClassCastException e) {
        throw new LocalSearchException("Invalid feature source in parameter" + Integer.toString(sourcePosition),
                e);
    }
}

From source file:org.sonar.php.tree.impl.expression.ArrayInitializerFunctionTreeImpl.java

@Override
public Iterator<Tree> childrenIterator() {
    return Iterators.concat(Iterators.singletonIterator(arrayToken),
            Iterators.singletonIterator(openParenthesis), arrayPairs.elementsAndSeparators(),
            Iterators.singletonIterator(closeParenthesis));
}

From source file:com.google.devtools.build.lib.remote.Chunker.java

Chunker(Item input, int chunkSize) throws IOException {
    this(Iterators.singletonIterator(input), chunkSize, ImmutableSet.of(input.getDigest()));
}

From source file:nz.ac.massey.cs.guery.impl.BreadthFirstPathFinder.java

private Iterator<Path<V, E>> findDirectLinks(final GraphAdapter<V, E> g, V start, int minLength,
        boolean outgoing, Predicate<E> filter, boolean computeAll) {
    Iterator<Path<V, E>> nullIter = null;
    if (minLength == 0) {
        Path<V, E> path = new LREmptyPath(start);
        nullIter = (Iterator<Path<V, E>>) Iterators.singletonIterator(path);
    }// w w w  .  ja v  a 2 s .  c om
    Iterator<E> edges = outgoing ? g.getOutEdges(start, filter) : g.getInEdges(start, filter);
    Iterator<Path<V, E>> paths = Iterators.transform(edges, new Function<E, Path<V, E>>() {
        @Override
        public Path<V, E> apply(E e) {
            return new SingletonPath<V, E>(e, g);
        }
    });

    return nullIter == null ? paths : Iterators.concat(nullIter, paths);

}

From source file:com.wrmsr.wava.core.type.Signature.java

@Override
public Iterator<Type> iterator() {
    return Iterators.concat(Iterators.singletonIterator(result), arguments.iterator());
}

From source file:org.sonar.pickbasic.tree.impl.statement.EquStatementTreeImpl.java

@Override
public Iterator<Tree> childrenIterator() {
    return Iterators.concat(Iterators.forArray(equKeyword, expression), toClauses.iterator(),
            Iterators.singletonIterator(semicolonToken));
}

From source file:org.elasticsearch.search.aggregations.support.bytes.ScriptBytesValues.java

@Override
public int setDocument(int docId) {
    this.docId = docId;
    script.setNextDocId(docId);//from   ww w .ja  v a 2  s .  c  o m
    value = script.run();

    if (value == null) {
        iter = Iterators.emptyIterator();
        return 0;
    }

    if (value.getClass().isArray()) {
        final int length = Array.getLength(value);
        // don't use Arrays.asList because the array may be an array of primitives?
        iter = new Iterator<Object>() {

            int i = 0;

            @Override
            public boolean hasNext() {
                return i < length;
            }

            @Override
            public Object next() {
                return Array.get(value, i++);
            }

            @Override
            public void remove() {
                throw new UnsupportedOperationException();
            }

        };
        return length;
    }

    if (value instanceof Collection) {
        final Collection<?> coll = (Collection<?>) value;
        iter = coll.iterator();
        return coll.size();
    }

    iter = Iterators.singletonIterator(value);
    return 1;
}

From source file:org.sonar.javascript.tree.impl.declaration.ParameterListTreeImpl.java

@Override
public Iterator<Tree> childrenIterator() {
    return Iterators.concat(Iterators.singletonIterator(openParenthesis),
            parameters.elementsAndSeparators(Functions.<Tree>identity()),
            Iterators.singletonIterator(closeParenthesis));
}

From source file:org.sonar.pickbasic.tree.impl.statement.BeginCaseStatementTreeImpl.java

@Override
public Iterator<Tree> childrenIterator() {
    return Iterators.concat(Iterators.singletonIterator(beginCaseKeyword), beginCaseCases.iterator(),
            Iterators.forArray(endCaseKeyword, semicolonToken));
}