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(Iterator<? extends T> a, Iterator<? extends T> b)

Source Link

Document

Combines two iterators into a single iterator.

Usage

From source file:com.threerings.media.MetaMediaManager.java

public Iterator<AbstractMedia> iterator() {
    return Iterators.concat(_spritemgr.enumerateSprites(), _animmgr.iterator());
}

From source file:org.eclipse.emf.compare.match.update.Updater.java

private Iterable<EObject> allContentsOf(final EObject root) {
    return new Iterable<EObject>() {
        public Iterator<EObject> iterator() {
            final Iterator<EObject> contentsIterator;
            if (root == null) {
                contentsIterator = Iterators.<EObject>emptyIterator();
            } else {
                contentsIterator = root.eAllContents();
            }//from w w  w  . j  a  v  a2s .c o  m
            return Iterators.concat(Iterators.singletonIterator(root), contentsIterator);
        }
    };
}

From source file:com.tinspx.util.collect.CollectUtils.java

/**
 * appends {@code value} to the <i>end</i> of {@code iter}
 *//*from w  w w. j av  a2  s.  c  o  m*/
public static <T> Iterator<T> concat(Iterator<? extends T> iter, T value) {
    return Iterators.concat(iter, iterator(value));
}

From source file:com.tinspx.util.collect.CollectUtils.java

/**
 * prepends {@code value} to the <i>beginning</i> of {@code iter}
 *//* w w  w  .  j a v a2  s .  c o  m*/
public static <T> Iterator<T> concat(T value, Iterator<? extends T> iter) {
    return Iterators.concat(iterator(value), iter);
}

From source file:org.pshdl.model.impl.AbstractHDLManip.java

@Override
public Iterator<IHDLObject> deepIterator() {
    return new Iterator<IHDLObject>() {

        private int pos = 0;
        private Iterator<? extends IHDLObject> current;

        @Override// w w  w .j a v a  2s .c  o  m
        public boolean hasNext() {
            if ((current != null) && !current.hasNext()) {
                current = null;
            }
            while (current == null) {
                switch (pos++) {
                case 0:
                    if (target != null) {
                        current = Iterators.concat(Iterators.forArray(target), target.deepIterator());
                    }
                    break;
                case 1:
                    if (castTo != null) {
                        current = Iterators.concat(Iterators.forArray(castTo), castTo.deepIterator());
                    }
                    break;
                default:
                    return false;
                }
            }
            return (current != null) && current.hasNext();
        }

        @Override
        public IHDLObject next() {
            return current.next();
        }

        @Override
        public void remove() {
            throw new IllegalArgumentException("Not supported");
        }

    };
}

From source file:org.eclipse.xtext.builder.impl.QueuedBuildData.java

public Queue<URI> getQueue(String projectName) {
    final LinkedList<URI> list = projectNameToChangedResource.get(projectName);
    if (list == null)
        return uris;
    return new AbstractQueue<URI>() {

        @Override//from w ww. j a v a 2s.com
        public boolean offer(URI o) {
            return list.offer(o);
        }

        @Override
        public URI poll() {
            if (uris.isEmpty())
                return list.poll();
            return uris.poll();
        }

        @Override
        public URI peek() {
            if (uris.isEmpty())
                return list.peek();
            return uris.peek();
        }

        @Override
        public Iterator<URI> iterator() {
            return Iterators.concat(uris.iterator(), list.iterator());
        }

        @Override
        public int size() {
            return uris.size() + list.size();
        }
    };
}

From source file:org.eclipse.sirius.diagram.business.internal.metamodel.helper.DiagramElementMappingHelper.java

private static Iterator<EObject> extEAllContents(final EObject eObj) {
    Iterator<EObject> it = null;
    final ModelAccessor accessor = SiriusPlugin.getDefault().getModelAccessorRegistry().getModelAccessor(eObj);
    final Session session = SessionManager.INSTANCE.getSession(eObj);
    for (final Resource resource : session.getSemanticResources()) {
        for (final EObject root : resource.getContents()) {
            if (it == null) {
                it = accessor.eAllContents(root);
            } else {
                Iterators.concat(it, accessor.eAllContents(root));
            }//from  w  ww.j a  va  2s . c  o m
        }
    }
    return it;
}

From source file:alluxio.master.block.DefaultBlockMaster.java

@Override
public Iterator<JournalEntry> getJournalEntryIterator() {
    final Iterator<MasterBlockInfo> it = mBlocks.values().iterator();
    Iterator<JournalEntry> blockIterator = new Iterator<JournalEntry>() {
        @Override//from   w w  w . j  av  a  2 s  .c om
        public boolean hasNext() {
            return it.hasNext();
        }

        @Override
        public JournalEntry next() {
            if (!hasNext()) {
                throw new NoSuchElementException();
            }
            MasterBlockInfo info = it.next();
            BlockInfoEntry blockInfoEntry = BlockInfoEntry.newBuilder().setBlockId(info.getBlockId())
                    .setLength(info.getLength()).build();
            return JournalEntry.newBuilder().setBlockInfo(blockInfoEntry).build();
        }

        @Override
        public void remove() {
            throw new UnsupportedOperationException("BlockMaster#Iterator#remove is not supported.");
        }
    };

    return Iterators.concat(CommonUtils.singleElementIterator(getContainerIdJournalEntry()), blockIterator);
}

From source file:org.pshdl.model.impl.AbstractHDLTernary.java

@Override
public Iterator<IHDLObject> deepIterator() {
    return new Iterator<IHDLObject>() {

        private int pos = 0;
        private Iterator<? extends IHDLObject> current;

        @Override//from   w w w . j  a va2s  . c  o  m
        public boolean hasNext() {
            if ((current != null) && !current.hasNext()) {
                current = null;
            }
            while (current == null) {
                switch (pos++) {
                case 0:
                    if (ifExpr != null) {
                        current = Iterators.concat(Iterators.forArray(ifExpr), ifExpr.deepIterator());
                    }
                    break;
                case 1:
                    if (thenExpr != null) {
                        current = Iterators.concat(Iterators.forArray(thenExpr), thenExpr.deepIterator());
                    }
                    break;
                case 2:
                    if (elseExpr != null) {
                        current = Iterators.concat(Iterators.forArray(elseExpr), elseExpr.deepIterator());
                    }
                    break;
                default:
                    return false;
                }
            }
            return (current != null) && current.hasNext();
        }

        @Override
        public IHDLObject next() {
            return current.next();
        }

        @Override
        public void remove() {
            throw new IllegalArgumentException("Not supported");
        }

    };
}

From source file:org.eclipse.emf.ecoretools.design.service.DesignServices.java

public Collection<EModelElement> getDisplayedEModelElements(DSemanticDiagram diagram) {
    Set<EModelElement> modelelements = Sets.newLinkedHashSet();
    Iterator<DSemanticDecorator> it = Iterators.filter(
            Iterators.concat(Iterators.singletonIterator(diagram), diagram.eAllContents()),
            DSemanticDecorator.class);
    while (it.hasNext()) {
        DSemanticDecorator dec = it.next();
        if (dec.getTarget() instanceof EModelElement)
            modelelements.add((EModelElement) dec.getTarget());
    }/*from   www . ja v a2s  .  co m*/
    return modelelements;
}