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.kitesdk.data.spi.filesystem.FileSystemView.java

/**
 * Returns an iterator that provides all leaf-level directories in this view.
 *
 * @return leaf-directory iterator//from   w w  w  .j av a  2s  .c  om
 */
Iterator<Path> dirIterator() {
    if (dataset.getDescriptor().isPartitioned()) {
        return Iterators.transform(partitionIterator(), new Function<Pair<StorageKey, Path>, Path>() {
            @Override
            @edu.umd.cs.findbugs.annotations.SuppressWarnings(value = "NP_PARAMETER_MUST_BE_NONNULL_BUT_MARKED_AS_NULLABLE", justification = "False positive, initialized above as non-null.")
            public Path apply(@Nullable Pair<StorageKey, Path> input) {
                return new Path(root, input.second());
            }
        });
    } else {
        return Iterators.singletonIterator(root);
    }
}

From source file:io.druid.extendedset.intset.ImmutableConciseSet.java

public static ImmutableConciseSet union(Iterator<ImmutableConciseSet> sets) {
    ImmutableConciseSet partialResults = doUnion(Iterators.limit(sets, CHUNK_SIZE));
    while (sets.hasNext()) {
        final UnmodifiableIterator<ImmutableConciseSet> partialIter = Iterators
                .singletonIterator(partialResults);
        partialResults = doUnion(//from   w  ww  .  j a  v  a2s  .  c  o m
                Iterators.<ImmutableConciseSet>concat(partialIter, Iterators.limit(sets, CHUNK_SIZE)));
    }
    return partialResults;
}

From source file:org.apache.druid.extendedset.intset.ImmutableConciseSet.java

public static ImmutableConciseSet union(Iterator<ImmutableConciseSet> sets) {
    ImmutableConciseSet partialResults = doUnion(Iterators.limit(sets, CHUNK_SIZE));
    while (sets.hasNext()) {
        final UnmodifiableIterator<ImmutableConciseSet> partialIter = Iterators
                .singletonIterator(partialResults);
        partialResults = doUnion(Iterators.concat(partialIter, Iterators.limit(sets, CHUNK_SIZE)));
    }/*  ww  w  .jav  a  2s .c o m*/
    return partialResults;
}

From source file:org.sonar.javascript.model.implementations.expression.ClassTreeImpl.java

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

From source file:org.sonar.php.tree.impl.declaration.ClassDeclarationTreeImpl.java

@Override
public Iterator<Tree> childrenIterator() {
    return Iterators.concat(
            Iterators.forArray(modifierToken, classEntryTypeToken, name, extendsToken, superClass,
                    implementsToken),/*from w ww.j av a2 s .  co  m*/
            superInterfaces.elementsAndSeparators(), Iterators.singletonIterator(openCurlyBraceToken),
            members.iterator(), Iterators.singletonIterator(closeCurlyBraceToken));
}

From source file:org.sonar.javascript.model.internal.expression.ClassTreeImpl.java

@Override
public Iterator<Tree> childrenIterator() {
    return Iterators.concat(Iterators.forArray(classToken, name, extendsToken, superClass, openCurlyBraceToken),
            elements.iterator(), Iterators.singletonIterator(closeCurlyBraceToken));
}

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

@Override
public Iterator<Tree> childrenIterator() {
    return Iterators.concat(Iterators.forArray(classToken, openParenthesisToken),
            arguments.elementsAndSeparators(),
            Iterators.forArray(closeParenthesisToken, extendsToken, superClass, implementsToken),
            superInterfaces.elementsAndSeparators(), Iterators.singletonIterator(openCurlyBraceToken),
            members.iterator(), Iterators.singletonIterator(closeCurlyBraceToken));
}

From source file:org.talend.cwm.compare.ModelElementMatchEngine.java

/**
 * /*w w  w .  java  2s .  co m*/
 * if the scope is DBConnection,should use scope.getCoveredEObjects(EResource res),instead of
 * scope.getChildren(EObject left).
 * 
 * @param comparison
 * @param scope
 * @param left
 * @param right
 * @param origin
 * @param monitor
 */
private void matchForDBConn(Comparison comparison, IComparisonScope scope, EObject left, EObject right,
        EObject origin, Monitor monitor) {
    if (left == null || right == null) {
        throw new IllegalArgumentException();
    }

    final Iterator<? extends EObject> leftEObjects = Iterators.concat(Iterators.singletonIterator(left),
            scope.getCoveredEObjects(left.eResource()));
    final Iterator<? extends EObject> rightEObjects = Iterators.concat(Iterators.singletonIterator(right),
            scope.getCoveredEObjects(right.eResource()));
    final Iterator<? extends EObject> originEObjects;
    if (origin != null) {
        originEObjects = Iterators.concat(Iterators.singletonIterator(origin),
                scope.getCoveredEObjects(origin.eResource()));
    } else {
        originEObjects = Iterators.emptyIterator();
    }

    getEObjectMatcher().createMatches(comparison, leftEObjects, rightEObjects, originEObjects, monitor);
}

From source file:org.apache.druid.timeline.VersionedIntervalTimeline.java

public void add(final Interval interval, VersionType version, PartitionChunk<ObjectType> object) {
    addAll(Iterators.singletonIterator(object), o -> interval, o -> version);
}

From source file:org.sonar.sslr.internal.ast.select.SingleAstSelect.java

@Override
public Iterator<AstNode> iterator() {
    return Iterators.singletonIterator(node);
}