Java Predicates.in方法代碼示例

import com.google.common.base.Predicates; //導入方法依賴的package包/類
/**
 * Sugar for collecting {@link IWorkspace Eclipse workspace} projects that have any direct dependency to any
 * external projects. Same as {@link #collectProjectsWithDirectExternalDependencies()} but does not considers all
 * the available projects but only those that are given as the argument.
 *
 * @param externalProjects
 *            the external projects that has to be considered as a possible dependency of an Eclipse workspace based
 *            project.
 * @return an iterable of Eclipse workspace projects that has direct dependency to an external project given as the
 *         argument.
 */
public Iterable<IProject> collectProjectsWithDirectExternalDependencies(
		final Iterable<? extends IProject> externalProjects) {

	if (!Platform.isRunning()) {
		return emptyList();
	}

	final Collection<String> externalIds = from(externalProjects).transform(p -> p.getName()).toSet();
	final Predicate<String> externalIdsFilter = Predicates.in(externalIds);

	return from(asList(getWorkspace().getRoot().getProjects()))
			.filter(p -> Iterables.any(getDirectExternalDependencyIds(p), externalIdsFilter));

}
 

import com.google.common.base.Predicates; //導入方法依賴的package包/類
public ArgumentOutput copyWithFilteredResponses(Predicate<Scored<Response>> predicate) {
  final Iterable<Scored<Response>> scoredResponses =
      Iterables.filter(scoredResponses(), predicate);
  final ImmutableSet<Response> responses = ImmutableSet.copyOf(
      transform(scoredResponses, Scoreds.<Response>itemsOnly()));
  final Predicate<Response> retainedResponse = Predicates.in(responses);
  // retain only the responses and metadata that this predicate filters
  return ArgumentOutput
      .from(docId(), scoredResponses, Maps.filterKeys(metadata, retainedResponse));
}
 

import com.google.common.base.Predicates; //導入方法依賴的package包/類
private void storeUpdatedInternal(final ExternalLibraryPreferenceStore store, final IProgressMonitor monitor) {
	ensureInitialized();
	final Set<java.net.URI> oldLocations = newLinkedHashSet(locations);
	final Set<java.net.URI> newLocation = newLinkedHashSet(store.getLocations());
	final Collection<java.net.URI> removedLocations = difference(oldLocations, newLocation);
	final Collection<java.net.URI> addedLocations = difference(newLocation, oldLocations);

	final SubMonitor subMonitor = convert(monitor, 3);

	final Iterable<IProject> projectsToClean = getProjects(removedLocations);

	// Clean projects.
	if (!Iterables.isEmpty(projectsToClean)) {
		builderHelper.clean(projectsToClean, subMonitor.newChild(1));
	}
	subMonitor.worked(1);

	// Invalidate before collecting dependencies.
	invalidateCache(store);

	final Collection<IProject> workspaceProjectsToRebuild = newHashSet(
			collector.collectProjectsWithDirectExternalDependencies(projectsToClean));

	// Cache could be polluted with external projects while collecting associated workspace ones.
	invalidateCache(store);

	// Rebuild whole external workspace. Filter out projects that are present in the Eclipse workspace (if any).
	final Collection<String> eclipseWorkspaceProjectNames = getAllEclipseWorkspaceProjectNames();
	final Predicate<String> eclipseWorkspaceProjectNamesFilter = Predicates.in(eclipseWorkspaceProjectNames);

	final Iterable<ExternalProject> projectsToBuild = from(
			collector.hookUpReferencedBuildConfigs(getProjects(addedLocations)))
					.filter(p -> !eclipseWorkspaceProjectNamesFilter.apply(p.getName()));

	// Build recently added projects that do not exist in workspace.
	// XXX akitta: consider filtering out external projects that exists in index already. (@ higher priority level)
	if (!Iterables.isEmpty(projectsToBuild)) {
		builderHelper.build(projectsToBuild, subMonitor.newChild(1));
	}
	subMonitor.worked(1);

	addAll(workspaceProjectsToRebuild, collector.collectProjectsWithDirectExternalDependencies(projectsToBuild));
	scheduler.scheduleBuildIfNecessary(workspaceProjectsToRebuild);
}
 

import com.google.common.base.Predicates; //導入方法依賴的package包/類
private void registerProjectsInternal(NpmProjectAdaptionResult result, IProgressMonitor monitor,
		boolean triggerCleanbuild) {

	checkState(result.isOK(), "Expected OK result: " + result);
	ensureInitialized();

	if (!ExternalLibrariesActivator.requiresInfrastructureForLibraryManager()) {
		LOGGER.warn("Built-in libraries and NPM support are disabled.");
	}

	final SubMonitor subMonitor = convert(monitor, 3);

	final Iterable<IProject> projectsToClean = from(result.getToBeBuilt().getToBeDeleted())
			.transform(uri -> getProject(new File(uri).getName())).filter(notNull());

	final Set<IProject> workspaceProjectsToRebuild = newHashSet(
			collector.collectProjectsWithDirectExternalDependencies(projectsToClean));

	// Clean projects.
	if (!Iterables.isEmpty(projectsToClean)) {
		builderHelper.clean(projectsToClean, subMonitor.newChild(1));
	}
	subMonitor.worked(1);

	// Update internal state.
	updateState();

	// Rebuild whole external workspace. Filter out projects that are present in the Eclipse workspace (if any).
	final Collection<String> eclipseWorkspaceProjectNames = getAllEclipseWorkspaceProjectNames();
	final Predicate<String> eclipseWorkspaceProjectNamesFilter = Predicates.in(eclipseWorkspaceProjectNames);

	final Iterable<IProject> projectsToBuild = from(result.getToBeBuilt().getToBeUpdated())
			.transform(uri -> getProject(new File(uri).getName())).filter(notNull())
			.filter(p -> !eclipseWorkspaceProjectNamesFilter.apply(p.getName()));

	// Build recently added projects that do not exist in workspace.
	// Also includes projects that exist already in the index, but are shadowed.
	if (!Iterables.isEmpty(projectsToBuild)) {
		builderHelper.build(projectsToBuild, subMonitor.newChild(1));
	}
	subMonitor.worked(1);

	if (triggerCleanbuild) {
		Iterable<IProject> depPjs = collector.collectProjectsWithDirectExternalDependencies(projectsToBuild);
		addAll(workspaceProjectsToRebuild, depPjs);
		scheduler.scheduleBuildIfNecessary(workspaceProjectsToRebuild);
	}
}
 

import com.google.common.base.Predicates; //導入方法依賴的package包/類
/**
 * Returns an unmodifiable <b>view</b> of the intersection of two sets. The
 * returned set contains all elements that are contained by both backing sets.
 * The iteration order of the returned set matches that of {@code set1}.
 *
 * <p>Results are undefined if {@code set1} and {@code set2} are sets based
 * on different equivalence relations (as {@code HashSet}, {@code TreeSet},
 * and the keySet of an {@code IdentityHashMap} all are).
 *
 * <p><b>Note:</b> The returned view performs slightly better when {@code
 * set1} is the smaller of the two sets. If you have reason to believe one of
 * your sets will generally be smaller than the other, pass it first.
 * Unfortunately, since this method sets the generic type of the returned set
 * based on the type of the first set passed, this could in rare cases force
 * you to make a cast, for example: <pre>   {@code
 *
 *   Set<Object> aFewBadObjects = ...
 *   Set<String> manyBadStrings = ...
 *
 *   // impossible for a non-String to be in the intersection
 *   SuppressWarnings("unchecked")
 *   Set<String> badStrings = (Set) Sets.intersection(
 *       aFewBadObjects, manyBadStrings);}</pre>
 *
 * <p>This is unfortunate, but should come up only very rarely.
 */
public static <E> SetView<E> intersection(final Set<E> set1, final Set<?> set2) {
  checkNotNull(set1, "set1");
  checkNotNull(set2, "set2");

  final Predicate<Object> inSet2 = Predicates.in(set2);
  return new SetView<E>() {
    @Override
    public UnmodifiableIterator<E> iterator() {
      return Iterators.filter(set1.iterator(), inSet2);
    }

    @Override
    public Stream<E> stream() {
      return set1.stream().filter(inSet2);
    }

    @Override
    public Stream<E> parallelStream() {
      return set1.parallelStream().filter(inSet2);
    }

    @Override
    public int size() {
      return Iterators.size(iterator());
    }

    @Override
    public boolean isEmpty() {
      return !iterator().hasNext();
    }

    @Override
    public boolean contains(Object object) {
      return set1.contains(object) && set2.contains(object);
    }

    @Override
    public boolean containsAll(Collection<?> collection) {
      return set1.containsAll(collection) && set2.containsAll(collection);
    }
  };
}