List of usage examples for java.util Collections emptyIterator
@SuppressWarnings("unchecked") public static <T> Iterator<T> emptyIterator()
From source file:grakn.core.server.session.computer.GraknSparkExecutor.java
public static <M> JavaPairRDD<Object, ViewIncomingPayload<M>> executeVertexProgramIteration( final JavaPairRDD<Object, VertexWritable> graphRDD, final JavaPairRDD<Object, ViewIncomingPayload<M>> viewIncomingRDD, final GraknSparkMemory memory, final Configuration graphComputerConfiguration, // has the Graph/GraphComputer.configuration() information final Configuration vertexProgramConfiguration) { // has the VertexProgram.loadState() information boolean partitionedGraphRDD = graphRDD.partitioner().isPresent(); if (partitionedGraphRDD && null != viewIncomingRDD) // the graphRDD and the viewRDD must have the same partitioner {/* w w w . j a v a2s .c o m*/ assert graphRDD.partitioner().get().equals(viewIncomingRDD.partitioner().get()); } final JavaPairRDD<Object, ViewOutgoingPayload<M>> viewOutgoingRDD = ((null == viewIncomingRDD) ? graphRDD.mapValues( vertexWritable -> new Tuple2<>(vertexWritable, Optional.<ViewIncomingPayload<M>>absent())) : // first iteration will not have any views or messages graphRDD.leftOuterJoin(viewIncomingRDD)) // every other iteration may have views and messages // for each partition of vertices emit a view and their outgoing messages .mapPartitionsToPair(partitionIterator -> { KryoShimServiceLoader.applyConfiguration(graphComputerConfiguration); // if the partition is empty, return without starting a new VP iteration if (!partitionIterator.hasNext()) { return Collections.emptyIterator(); } final VertexProgram<M> workerVertexProgram = VertexProgram.createVertexProgram( HadoopGraph.open(graphComputerConfiguration), vertexProgramConfiguration); // each partition(Spark)/worker(TP3) has a local copy of the vertex program (a worker's task) final String[] vertexComputeKeysArray = VertexProgramHelper .vertexComputeKeysAsArray(workerVertexProgram.getVertexComputeKeys()); // the compute keys as an array final SparkMessenger<M> messenger = new SparkMessenger<>(); workerVertexProgram.workerIterationStart(memory.asImmutable()); // start the worker return IteratorUtils.map(partitionIterator, vertexViewIncoming -> { final StarGraph.StarVertex vertex = vertexViewIncoming._2()._1().get(); // get the vertex from the vertex writable final boolean hasViewAndMessages = vertexViewIncoming._2()._2().isPresent(); // if this is the first iteration, then there are no views or messages final List<DetachedVertexProperty<Object>> previousView = hasViewAndMessages ? vertexViewIncoming._2()._2().get().getView() : memory.isInitialIteration() ? new ArrayList<>() : Collections.emptyList(); // revive compute properties if they already exist if (memory.isInitialIteration() && vertexComputeKeysArray.length > 0) { vertex.properties(vertexComputeKeysArray) .forEachRemaining(vertexProperty -> previousView .add(DetachedFactory.detach(vertexProperty, true))); } // drop any computed properties that are cached in memory vertex.dropVertexProperties(vertexComputeKeysArray); final List<M> incomingMessages = hasViewAndMessages ? vertexViewIncoming._2()._2().get().getIncomingMessages() : Collections.emptyList(); IteratorUtils.removeOnNext(previousView.iterator()).forEachRemaining( property -> property.attach(Attachable.Method.create(vertex))); // attach the view to the vertex assert previousView.isEmpty(); // do the vertex's vertex program iteration messenger.setVertexAndIncomingMessages(vertex, incomingMessages); // set the messenger with the incoming messages workerVertexProgram.execute( ComputerGraph.vertexProgram(vertex, workerVertexProgram), messenger, memory); // execute the vertex program on this vertex for this iteration // assert incomingMessages.isEmpty(); // maybe the program didn't read all the messages incomingMessages.clear(); // detached the compute property view from the vertex final List<DetachedVertexProperty<Object>> nextView = vertexComputeKeysArray.length == 0 ? // not all vertex programs have compute keys Collections.emptyList() : IteratorUtils.list(IteratorUtils.map( vertex.properties(vertexComputeKeysArray), vertexProperty -> DetachedFactory.detach(vertexProperty, true))); // drop compute property view as it has now been detached from the vertex vertex.dropVertexProperties(vertexComputeKeysArray); final List<Tuple2<Object, M>> outgoingMessages = messenger.getOutgoingMessages(); // get the outgoing messages being sent by this vertex if (!partitionIterator.hasNext()) { workerVertexProgram.workerIterationEnd(memory.asImmutable()); // if no more vertices in the partition, end the worker's iteration} } return (nextView.isEmpty() && outgoingMessages.isEmpty()) ? null : // if there is no view nor outgoing messages, emit nothing new Tuple2<>(vertex.id(), new ViewOutgoingPayload<>(nextView, outgoingMessages)); // else, emit the vertex id, its view, and its outgoing messages }); }, true) // true means that the partition is preserved .filter(tuple -> null != tuple); // if there are no messages or views, then the tuple is null (memory optimization) // the graphRDD and the viewRDD must have the same partitioner if (partitionedGraphRDD) { assert graphRDD.partitioner().get().equals(viewOutgoingRDD.partitioner().get()); } ///////////////////////////////////////////////////////////// ///////////////////////////////////////////////////////////// final PairFlatMapFunction<Tuple2<Object, ViewOutgoingPayload<M>>, Object, Payload> messageFunction = tuple -> IteratorUtils .concat(IteratorUtils.of(new Tuple2<>(tuple._1(), tuple._2().getView())), // emit the view payload IteratorUtils.map(tuple._2().getOutgoingMessages().iterator(), message -> new Tuple2<>(message._1(), new MessagePayload<>(message._2())))); final MessageCombiner<M> messageCombiner = VertexProgram .<VertexProgram<M>>createVertexProgram(HadoopGraph.open(vertexProgramConfiguration), vertexProgramConfiguration) .getMessageCombiner().orElse(null); final Function2<Payload, Payload, Payload> reducerFunction = (a, b) -> { // reduce the view and outgoing messages into a single payload object representing the new view and incoming messages for a vertex if (a instanceof ViewIncomingPayload) { ((ViewIncomingPayload<M>) a).mergePayload(b, messageCombiner); return a; } else if (b instanceof ViewIncomingPayload) { ((ViewIncomingPayload<M>) b).mergePayload(a, messageCombiner); return b; } else { final ViewIncomingPayload<M> c = new ViewIncomingPayload<>(messageCombiner); c.mergePayload(a, messageCombiner); c.mergePayload(b, messageCombiner); return c; } }; ///////////////////////////////////////////////////////////// ///////////////////////////////////////////////////////////// // "message pass" by reducing on the vertex object id of the view and message payloads final JavaPairRDD<Object, ViewIncomingPayload<M>> newViewIncomingRDD = (partitionedGraphRDD ? viewOutgoingRDD.flatMapToPair(messageFunction).reduceByKey(graphRDD.partitioner().get(), reducerFunction) : viewOutgoingRDD.flatMapToPair(messageFunction).reduceByKey(reducerFunction)) .mapValues(payload -> { // handle various corner cases of when views don't exist, messages don't exist, or neither exists. if (payload instanceof ViewIncomingPayload) {// this happens if there is a vertex view with incoming messages return (ViewIncomingPayload<M>) payload; } else if (payload instanceof ViewPayload) { // this happens if there is a vertex view with no incoming messages return new ViewIncomingPayload<>((ViewPayload) payload); } else { // this happens when there is a single message to a vertex that has no view or outgoing messages return new ViewIncomingPayload<>((MessagePayload<M>) payload); } }); // the graphRDD and the viewRDD must have the same partitioner if (partitionedGraphRDD) { assert graphRDD.partitioner().get().equals(newViewIncomingRDD.partitioner().get()); } newViewIncomingRDD.foreachPartition(partitionIterator -> { KryoShimServiceLoader.applyConfiguration(graphComputerConfiguration); }); // need to complete a task so its BSP and the memory for this iteration is updated return newViewIncomingRDD; }
From source file:apps.core.wcm.components.list.v1.list.List.java
public void activate() { request = getRequest();/*from ww w. j a va 2 s . co m*/ pageManager = getPageManager(); properties = getProperties(); resource = getResource(); ResourceResolver resourceResolver = resource.getResourceResolver(); readListConfiguration(); listHTMLElement = Boolean.valueOf(ordered) ? "ol" : "ul"; Source source = Source.getSource(listSource); if (source == null) { throw new IllegalArgumentException("Unknown list source: " + listSource); } Iterator<Page> pageIterator = Collections.emptyIterator(); if (source == Source.CHILDREN) { String parentPath = properties.get(PROP_PARENT_PAGE, resource.getPath()); Resource parentResource = resource.getPath().equals(parentPath) ? resource : resourceResolver.getResource(parentPath); Page startPage = pageManager.getContainingPage(parentResource); if (startPage != null) { pageIterator = startPage.listChildren(); } else { pageIterator = Collections.emptyIterator(); } } else if (source == Source.QUERYBUILDER) { QueryBuilder queryBuilder = resourceResolver.adaptTo(QueryBuilder.class); Session session = resourceResolver.adaptTo(Session.class); if (queryBuilder != null && session != null) { try { Query query = queryBuilder.loadQuery(resource.getPath() + "/" + PROP_SAVED_QUERY, session); if (query != null) { query.setHitsPerPage(limit); SearchResult result = query.getResult(); pageIterator = new HitPageIterator(pageManager, result.getHits().iterator(), !allowDuplicates); } } catch (Exception e) { LOGGER.error("Unable to load stored query for " + resource.getPath(), e); } } else { LOGGER.error("Error loading query builder."); } } else if (source == Source.SEARCH) { if (!StringUtils.isEmpty(query)) { SimpleSearch search = resource.adaptTo(SimpleSearch.class); if (search != null) { search.setQuery(query); search.setSearchIn(startIn); search.addPredicate(new Predicate("type", "type").set("type", NameConstants.NT_PAGE)); search.setHitsPerPage(limit); try { SearchResult result = search.getResult(); pageIterator = new HitPageIterator(pageManager, result.getHits().iterator(), !allowDuplicates); } catch (RepositoryException e) { LOGGER.error("Unable to retrieve search results for query.", e); } } } } else if (source == Source.TAGS) { String parentPath = properties.get(PROP_TAG_SEARCH_ROOT, resource.getPath()); String[] tags = properties.get(PROP_TAGS, new String[0]); boolean matchAny = properties.get(PROP_TAGS_MATCH, "any").equals("any"); Page startPage = pageManager.getPage(parentPath); if (startPage != null && tags.length > 0) { TagManager tagManager = resourceResolver.adaptTo(TagManager.class); RangeIterator<Resource> rangeIterator = tagManager.find(startPage.getPath(), tags, matchAny); java.util.List<Page> taggedPages = new ArrayList<>(); while (rangeIterator.hasNext()) { Resource r = rangeIterator.next(); taggedPages.add(pageManager.getContainingPage(r)); } pageIterator = taggedPages.iterator(); } } else if (source == Source.STATIC) { String[] pagesPaths = properties.get(PROP_PAGES, new String[0]); java.util.List<Page> pages = new ArrayList<>(pagesPaths.length); for (String path : pagesPaths) { Page page = pageManager.getContainingPage(path); if (page != null) { pages.add(page); } } pageIterator = pages.iterator(); } if (!pageIterator.hasNext() && LOGGER.isDebugEnabled()) { LOGGER.debug("Cannot find any elements for this list."); } else { resultPages = new ArrayList<>(); while (pageIterator.hasNext()) { Page page = pageIterator.next(); resultPages.add(page); } if (StringUtils.isNotEmpty(orderBy)) { Collections.sort(resultPages, new PageComparator(orderBy)); } if (resultPages.size() > limit) { resultPages = resultPages.subList(0, limit); } int index = 0, count = 0; for (Page p : resultPages) { if (pageMax > 0 && count >= pageMax) { break; } if (pageStart >= 0 && index < pageStart) { index++; continue; } ListItem item = new ListItem(p.getTitle(), p.getPath(), p.getLastModified(), p.getDescription(), hasImage(p.adaptTo(Resource.class))); listItems.add(item); count++; } } }
From source file:io.wcm.caconfig.extensions.contextpath.impl.AbsoluteParentContextPathStrategy.java
@Override public @NotNull Iterator<ContextResource> findContextResources(@NotNull Resource resource) { if (!isValidConfig()) { return Collections.emptyIterator(); }//from www. ja va2 s.co m ResourceResolver resourceResolver = resource.getResourceResolver(); PageManager pageManager = resourceResolver.adaptTo(PageManager.class); List<ContextResource> contextResources = new ArrayList<>(); int maxLevel = Path.getAbsoluteLevel(resource.getPath(), resourceResolver); for (int level = 0; level <= maxLevel; level++) { if (levels.contains(level) || (unlimited && level >= unlimitedLevelStart)) { String contextPath = Path.getAbsoluteParent(resource.getPath(), level, resourceResolver); if (StringUtils.isNotEmpty(contextPath)) { Resource contextResource = resource.getResourceResolver().getResource(contextPath); if (contextResource != null) { // first check if resource is blacklisted if (isResourceBelongingToBlacklistedTemplates(contextResource, pageManager)) { log.trace( "Resource '{}' is belonging to a page derived from a blacklisted template, skipping level {}", contextPath, level); break; } for (String configPathPattern : configPathPatterns) { String configRef = deriveConfigRef(contextPath, configPathPattern, resourceResolver); if (configRef != null) { contextResources .add(new ContextResource(contextResource, configRef, serviceRanking)); } } } } } } Collections.reverse(contextResources); return contextResources.iterator(); }
From source file:com.adobe.acs.commons.packaging.impl.PackageHelperImplTest.java
@Test public void testAddThumbnail() throws Exception { Resource thumbnailResource = mock(Resource.class); Node thumbnailNode = mock(Node.class); NodeType ntFile = mock(NodeType.class); when(thumbnailResource.adaptTo(Node.class)).thenReturn(thumbnailNode); when(thumbnailNode.isNodeType("nt:file")).thenReturn(true); when(thumbnailNode.getPrimaryNodeType()).thenReturn(ntFile); when(ntFile.getName()).thenReturn("nt:file"); when(thumbnailNode.getMixinNodeTypes()).thenReturn(new NodeType[0]); when(thumbnailNode.getProperties()).thenReturn(new PropertyIteratorAdapter(Collections.emptyIterator())); when(thumbnailNode.getNodes()).thenReturn(new NodeIteratorAdapter(Collections.emptyIterator())); when(packageOneDefNode.getSession()).thenReturn(mock(Session.class)); packageHelper.addThumbnail(packageOne, thumbnailResource); // Verification verify(packageOneDefNode, times(1)).addNode(eq("thumbnail.png"), eq("nt:file")); }
From source file:com.intuit.wasabi.repository.cassandra.impl.CassandraPagesRepository.java
Stream<AppPage> getAppPagesFromCassandra(Application.Name applicationName) {
Optional<Iterator<AppPage>> optionalResult = Optional.empty();
try {//from ww w . j ava 2s . com
optionalResult = Optional
.ofNullable(appPageIndexAccessor.selectBy(applicationName.toString()).iterator());
} catch (ReadTimeoutException | UnavailableException | NoHostAvailableException e) {
throw new RepositoryException(
"Could not retrieve the pages and its associated experiments for application:\""
+ applicationName + "\"",
e);
}
return StreamSupport.stream(Spliterators.spliteratorUnknownSize(
optionalResult.orElse(Collections.emptyIterator()), Spliterator.ORDERED), false);
}
From source file:com.emc.ecs.sync.source.S3Source.java
/** * This source is designed to query all objects under the root prefix as a flat list of results (no hierarchy), * which means <strong>no</strong> objects should have children *//*from ww w .ja v a 2 s.c o m*/ @Override public Iterator<S3SyncObject> childIterator(S3SyncObject syncObject) { return Collections.emptyIterator(); }
From source file:name.marcelomorales.siqisiqi.examples.crud.webapp.HomePage.java
public HomePage(final PageParameters parameters) { super(parameters); add(new Form<Void>("newdept") { final Model<String> deptNameModel; final Model<String> buildingModel; {//w w w . ja v a 2 s. co m add(new TextField<>("deptname", deptNameModel = Model.of(""))); add(new TextField<>("building", buildingModel = Model.of(""))); } @Override protected void onSubmit() { empDeptDao.newDept(deptNameModel.getObject(), buildingModel.getObject()); setResponsePage(HomePage.class); } }); add(new DefaultDataTable<>("depts", ImmutableList.<IColumn<Dept, String>>of(new PropertyColumn<Dept, String>(Model.of("id"), "deptno"), new PropertyColumn<Dept, String>(Model.of("totalSalaries"), "totalSalaries"), new PropertyColumn<Dept, String>(Model.of("building"), "building"), new PropertyColumn<Dept, String>(Model.of("deptname"), "deptname")), new SortableDataProvider<Dept, String>() { @Override public Iterator<? extends Dept> iterator(long first, long count) { return deptRepository.findByExample(null, null, null, first, count).iterator(); } @Override public long size() { return deptRepository.count(); } @Override public IModel<Dept> model(Dept object) { Dept dept = new Dept(); BeanUtils.copyProperties(object, dept); return Model.of(dept); } }, 5)); add(new Form<Emp>("newemp", new CompoundPropertyModel<>(Model.of(new Emp()))) { { add(new TextField<String>("fname")); add(new TextField<String>("lname")); add(new DropDownChoice<>("sex", ImmutableList.copyOf(Sex.values()))); add(new TextField<String>("ssn")); add(new TextField<BigDecimal>("salary")); add(new DropDownChoice<>("dept", new LoadableDetachableModel<List<Dept>>() { @Override protected List<Dept> load() { return Lists.newLinkedList(deptRepository.findAll()); } }, new ChoiceRenderer<Dept>("deptname"))); } @Override protected void onSubmit() { empDeptDao.saveEmp(getModelObject()); setResponsePage(HomePage.class); } }); add(new DefaultDataTable<>("emps", ImmutableList.<IColumn<Emp, String>>of(new PropertyColumn<Emp, String>(Model.of("id"), "empid"), new PropertyColumn<Emp, String>(Model.of("fname"), "fname"), new PropertyColumn<Emp, String>(Model.of("lname"), "lname"), new PropertyColumn<Emp, String>(Model.of("sex"), "sex"), new PropertyColumn<Emp, String>(Model.of("ssn"), "ssn"), new PropertyColumn<Emp, String>(Model.of("salary"), "salary"), new PropertyColumn<Emp, String>(Model.of("dept"), "dept.deptname")), new SortableDataProvider<Emp, String>() { @Override public Iterator<? extends Emp> iterator(long first, long count) { return empRepository.findByExample(null, null, null, first, count).iterator(); } @Override public long size() { return empRepository.count(); } @Override public IModel<Emp> model(Emp object) { Emp emp = new Emp(); BeanUtils.copyProperties(object, emp); return Model.of(emp); } }, 5)); fullTextModel = Model.of(""); add(new Form<String>("fulltexts", fullTextModel) { { add(new TextField<>("search", getModel())); } }); add(new DefaultDataTable<>("fulltextdept", ImmutableList.<IColumn<Dept, String>>of(new PropertyColumn<Dept, String>(Model.of("id"), "deptno"), new PropertyColumn<Dept, String>(Model.of("totalSalaries"), "totalSalaries"), new PropertyColumn<Dept, String>(Model.of("building"), "building"), new PropertyColumn<Dept, String>(Model.of("deptname"), "deptname")), new SortableDataProvider<Dept, String>() { @Override public Iterator<? extends Dept> iterator(long first, long count) { return deptRepository.findByFullTexts(fullTextModel.getObject(), null, first, count) .iterator(); } @Override public long size() { return deptRepository.countByFullTexts(fullTextModel.getObject()); } @Override public IModel<Dept> model(Dept object) { Dept dept = new Dept(); BeanUtils.copyProperties(object, dept); return Model.of(dept); } }, 5)); sexModel = Model.of(); add(new Form<Sex>("findBySex", sexModel) { { add(new DropDownChoice<>("sex", getModel(), ImmutableList.copyOf(Sex.values()))); } }); add(new DefaultDataTable<>("empbysex", ImmutableList.<IColumn<Emp, String>>of(new PropertyColumn<Emp, String>(Model.of("id"), "empid"), new PropertyColumn<Emp, String>(Model.of("fname"), "fname"), new PropertyColumn<Emp, String>(Model.of("lname"), "lname"), new PropertyColumn<Emp, String>(Model.of("sex"), "sex"), new PropertyColumn<Emp, String>(Model.of("ssn"), "ssn"), new PropertyColumn<Emp, String>(Model.of("salary"), "salary"), new PropertyColumn<Emp, String>(Model.of("dept"), "dept.deptname")), new SortableDataProvider<Emp, String>() { @Override public Iterator<? extends Emp> iterator(long first, long count) { if (sexModel.getObject() == null) { return Collections.emptyIterator(); } return empRepository.findBySex(sexModel.getObject(), new PageRequest((int) (first / 5), 5)) .iterator(); } @Override public long size() { if (sexModel.getObject() == null) { return 0; } return empRepository.countBySex(sexModel.getObject()); } @Override public IModel<Emp> model(Emp object) { Emp emp = new Emp(); BeanUtils.copyProperties(object, emp); return Model.of(emp); } }, 5)); add(new WebMarkupContainer("stats", new CompoundPropertyModel<>(new LoadableDetachableModel<Statistics>() { @Override protected Statistics load() { return boneCPAdm.getStatistics(); } })) { { add(new Label("connectionsRequested")); add(new Label("statementExecuteTimeAvg")); add(new Label("statementsExecuted")); add(new Label("totalCreatedConnections")); add(new Label("totalFree")); } }); }
From source file:com.emc.ecs.sync.source.EcsS3Source.java
/** * This source is designed to query all objects under the root prefix as a flat list of results (no hierarchy), * which means <strong>no</strong> objects should have children *//*from ww w.j a va 2 s.c om*/ @Override public Iterator<EcsS3SyncObject> childIterator(EcsS3SyncObject syncObject) { return Collections.emptyIterator(); }
From source file:fr.landel.utils.commons.StringUtilsTest.java
/** * Test method for {@link StringUtils#join(Iterable, String, Function)} * {@link StringUtils#join(Iterator, String, Function)} . */// ww w . j a va2s. c om @Test public void testJoin() { Function<Object, String> fKey = e -> "x" + String.valueOf(e); assertNull(StringUtils.join((Iterable<?>) null, null, null)); assertEquals("", StringUtils.join(Collections.emptyList(), null, null)); assertEquals("v", StringUtils.join(Arrays.asList("v"), null, null)); assertEquals("xv", StringUtils.join(Arrays.asList("v"), null, fKey)); assertEquals("12", StringUtils.join(Arrays.asList(1, 2), null, null)); assertEquals("x1,x2", StringUtils.join(Arrays.asList(1, 2), ",", fKey)); Function<String, String> fKeyStr = e -> "x" + String.valueOf(e); Function<Integer, String> fKeyInt = e -> "x" + String.valueOf(e); assertNull(StringUtils.join((Iterator<?>) null, null, null)); assertEquals("", StringUtils.join(Collections.emptyIterator(), null, null)); assertEquals("v", StringUtils.join(Arrays.asList("v").iterator(), null, null)); assertEquals("xv", StringUtils.join(Arrays.asList("v").iterator(), null, fKeyStr)); assertEquals("12", StringUtils.join(Arrays.asList(1, 2).iterator(), null, null)); assertEquals("x1,x2", StringUtils.join(Arrays.asList(1, 2).iterator(), ",", fKeyInt)); assertNull(StringUtils.join((Object[]) null, null, 0, 0, null)); assertEquals("", StringUtils.join(new Object[0], null, 0, 0, null)); assertEquals("v", StringUtils.join(new Object[] { "v", null }, null, 0, 2, null)); assertEquals("v", StringUtils.join(new Object[] { "v" }, null, 0, 1, null)); assertEquals("", StringUtils.join(new Object[] { "v" }, null, 1, 1, null)); assertEquals("xv", StringUtils.join(new Object[] { "v" }, null, 0, 1, fKey)); assertEquals("12", StringUtils.join(new Object[] { 1, 2 }, null, 0, 2, null)); assertEquals("1", StringUtils.join(new Object[] { 1, 2 }, null, 0, 1, null)); assertEquals("x1,x2", StringUtils.join(new Object[] { 1, 2 }, ",", 0, 2, fKey)); assertEquals("x2", StringUtils.join(new Object[] { 1, 2 }, ",", 1, 2, fKey)); assertNull(StringUtils.join((Object[]) null, null, null)); assertEquals("", StringUtils.join(new Object[0], null, null)); assertEquals("v", StringUtils.join(new Object[] { "v" }, null, null)); assertEquals("xv", StringUtils.join(new Object[] { "v" }, null, fKey)); assertEquals("12", StringUtils.join(new Object[] { 1, 2 }, null, null)); assertEquals("x1,x2", StringUtils.join(new Object[] { 1, 2 }, ",", fKey)); }
From source file:net.orfjackal.retrolambda.test.DefaultMethodsTest.java
@Test public void trying_to_use_default_methods_of_library_interfaces_causes_NoSuchMethodError() { assumeThat(SystemUtils.JAVA_VERSION_FLOAT, is(lessThan(1.8f))); class C implements Iterable<String> { @Override/*from ww w. j a v a2 s . c o m*/ public Iterator<String> iterator() { return Collections.emptyIterator(); } } thrown.expect(NoSuchMethodError.class); thrown.expectMessage("spliterator"); // Called directly on the class (invokevirtual) instead of the interface (invokeinterface), // to make sure that no method was inserted to the class (in which case this call would not fail) new C().spliterator(); }