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

Introduction

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

Prototype

public static boolean isEmpty(Iterable<?> iterable)

Source Link

Document

Determines if the given iterable contains no elements.

Usage

From source file:org.eclipse.xtext.ui.generator.trace.TraceBasedOpenerContributor.java

private void collectOpeners(IEclipseTrace trace, ITextRegion region, IAcceptor<FileOpener> acceptor) {
    Iterable<? extends ILocationInEclipseResource> locations = null;
    if (region != null)
        locations = trace.getAllAssociatedLocations(region);
    if (locations == null || Iterables.isEmpty(locations))
        locations = trace.getAllAssociatedLocations();
    Map<IStorage, ITextRegion> result = Maps.newHashMap();
    for (ILocationInEclipseResource location : locations) {
        IStorage storage = location.getPlatformResource();
        if (storage != null) {
            ITextRegion old = result.put(storage, location.getTextRegion());
            if (old != null) {
                ITextRegion merged = old.merge(location.getTextRegion());
                result.put(storage, merged);
            }/*from w ww .ja v a 2  s.  c  o  m*/
        }
    }
    for (Map.Entry<IStorage, ITextRegion> e : result.entrySet()) {
        IStorage storage = e.getKey();
        ITextRegion textRegion = e.getValue();
        acceptor.accept(createStorageBasedTextEditorOpener(storage, textRegion));
    }
}

From source file:com.b2international.index.revision.DefaultRevisionSearcher.java

@Override
public <T extends Revision> Iterable<T> get(Class<T> type, Iterable<Long> storageKeys) throws IOException {
    if (Iterables.isEmpty(storageKeys)) {
        return Collections.emptySet();
    } else {// ww  w  .  j av  a2 s  .c  o  m
        final Query<T> query = Query.select(type)
                .where(Expressions.matchAnyLong(Revision.STORAGE_KEY, storageKeys))
                .limit(Iterables.size(storageKeys)).build();
        return search(query);
    }
}

From source file:org.tensorics.core.tensor.lang.TensorStructurals.java

/**
 * Merges the given set of the Tensors based on information in their context and dimensions. This operation is only
 * possible, if the following preconditions are fulfilled:
 * <ul>//  w ww. ja v  a2  s . co  m
 * <li>The contexts of all the tensors have THE SAME dimensions AND</li>
 * <li>The dimensions of all the tensors are THE SAME (first found tensor dimension is taken as an reference)</li>
 * </ul>
 * 
 * @param tensors to be merged.
 * @return a merged tensor.
 * @throws IllegalArgumentException if zero or one tensor is put to be merged OR if tensors dimensionality and their
 *             context positions dimensionality is not equal OR tensor context is empty.
 */
public static <E> Tensor<E> merge(Iterable<Tensor<E>> tensors) {
    if (Iterables.isEmpty(tensors) || Iterables.size(tensors) == 1) {
        throw new IllegalArgumentException("Cannot merge empty or one element list of tensors!");
    }
    Tensor<E> firstTensor = tensors.iterator().next();
    Set<Class<?>> refDimensionSet = firstTensor.shape().dimensionSet();
    Position refContextPosition = firstTensor.context();
    Set<Class<?>> outcomeDimensionSet = new HashSet<>(refDimensionSet);
    Set<Class<?>> dimensionSet = refContextPosition.dimensionSet();
    if (dimensionSet.isEmpty()) {
        throw new IllegalArgumentException("Cannot merge tensors with empty context!");
    }
    outcomeDimensionSet.addAll(dimensionSet);
    Builder<E> tensorBuilder = ImmutableTensor.builder(outcomeDimensionSet);

    for (Tensor<E> oneTensor : tensors) {
        if (TensorStructurals.isValidInTermsOfDimensions(oneTensor, refDimensionSet,
                refContextPosition.dimensionSet())) {
            tensorBuilder.putAll(oneTensor.context(), oneTensor);
        } else {
            throw new IllegalArgumentException(
                    "One of the tensors in the provided list does not fit the others on dimensions."
                            + " Cannot continiue merging" + oneTensor);
        }
    }
    return tensorBuilder.build();
}

From source file:io.crate.sql.tree.QualifiedName.java

public QualifiedName(Iterable<String> parts) {
    Preconditions.checkNotNull(parts, "parts");
    Preconditions.checkArgument(!Iterables.isEmpty(parts), "parts is empty");

    this.parts = ImmutableList.copyOf(parts);
}

From source file:com.palantir.atlasdb.jackson.TableRowSelectionDeserializer.java

@Override
public TableRowSelection deserialize(JsonParser jp, DeserializationContext ctxt)
        throws IOException, JsonProcessingException {
    JsonNode node = jp.readValueAsTree();
    String tableName = node.get("table").textValue();
    TableMetadata metadata = metadataCache.getMetadata(tableName);
    Iterable<byte[]> rows = AtlasDeserializers.deserializeRows(metadata.getRowMetadata(), node.get("rows"));
    Iterable<byte[]> columns = AtlasDeserializers.deserializeNamedCols(metadata.getColumns(), node.get("cols"));
    if (Iterables.isEmpty(columns)) {
        return new TableRowSelection(tableName, rows, ColumnSelection.all());
    } else {//from w  w  w . jav  a2  s  .com
        return new TableRowSelection(tableName, rows, ColumnSelection.create(columns));
    }
}

From source file:com.synflow.cx.resource.CxResourceDescriptionManager.java

@Override
public boolean isAffectedByAny(Collection<Delta> deltas, IResourceDescription candidate,
        IResourceDescriptions context) throws IllegalArgumentException {
    for (Delta delta : deltas) {
        IResourceDescription resDesc = delta.getNew();
        if (resDesc == null) {
            // ignore deleted/closed resources
            continue;
        }/*from   ww  w .  ja va 2  s  . c o m*/

        if (!Iterables.isEmpty(candidate.getExportedObjectsByType(Literals.BUNDLE))) {
            // a candidate is a bundle, is it loaded by the deltas?
            if (isAffected(getImportedNames(resDesc), candidate)) {
                return true;
            }
        }

        // check instantiator to see if necessary to revalidate specialized sub-entities
        for (IEObjectDescription objDesc : resDesc.getExportedObjectsByType(Literals.NETWORK)) {
            CxEntity entity = instantiator.getEntity(objDesc.getEObjectURI());
            if (entity != null) {
                Network network = (Network) entity;
                if (isAffected(network, candidate)) {
                    return true;
                }
            }
        }
    }

    return isAffected(deltas, candidate, context);
}

From source file:org.tensorics.core.iterable.lang.QuantityIterableSupport.java

public final QuantifiedValue<V> rmsOf(Iterable<QuantifiedValue<V>> values) {
    if (Iterables.isEmpty(values)) {
        throw new IllegalArgumentException("Rms of empty value set is not possible.");
    }/*  w ww  . ja v  a  2 s. com*/
    return squareRootOf(calculate(sumOfSquaresOf(values)).dividedBy(sizeOf(values)));
}

From source file:org.eclipse.sirius.diagram.ui.tools.internal.actions.repair.DEdgeDiagramElementState.java

/**
 * {@inheritDoc}/*w w w .  j  a  va2  s. c o m*/
 */
@Override
public void storeElementState(EObject target, DiagramElementMapping mapping, DEdge element) {
    super.storeElementState(target, mapping, element);

    Iterable<ArrangeConstraint> existingArrangeConstraints = Iterables.filter(element.getArrangeConstraints(),
            ArrangeConstraint.class);
    if (!Iterables.isEmpty(existingArrangeConstraints)) {
        Iterables.addAll(arrangeConstraints, existingArrangeConstraints);
    }
}

From source file:org.apache.beam.runners.core.metrics.MetricUpdates.java

/** Returns true if there are no updates in this MetricUpdates object. */
public boolean isEmpty() {
    return Iterables.isEmpty(counterUpdates()) && Iterables.isEmpty(distributionUpdates());
}

From source file:com.google.api.server.spi.config.model.ApiFrontendLimitsConfig.java

@Override
public boolean equals(Object o) {
    if (this == o) {
        return true;
    } else if (o instanceof ApiFrontendLimitsConfig) {
        ApiFrontendLimitsConfig config = (ApiFrontendLimitsConfig) o;
        return Iterables.isEmpty(getConfigurationInconsistencies(config));
    } else {/*from  w w w  . j av  a2s.c o  m*/
        return false;
    }
}