Example usage for java.util Queue isEmpty

List of usage examples for java.util Queue isEmpty

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Introduction

In this page you can find the example usage for java.util Queue isEmpty.

Prototype

boolean isEmpty();

Source Link

Document

Returns true if this collection contains no elements.

Usage

From source file:org.rhq.modules.plugins.wildfly10.itest.standalone.TemplatedResourcesTest.java

@Test(priority = 11)
public void loadUpdateTemplatedResourceConfiguration() throws Exception {
    ConfigurationManager configurationManager = this.pluginContainer.getConfigurationManager();

    for (ResourceData resourceData : testResourceData) {
        ResourceType resourceType = new ResourceType(resourceData.resourceTypeName, Constants.PLUGIN_NAME,
                ResourceCategory.SERVICE, null);
        Resource subsystem = waitForResourceByTypeAndKey(platform, server, resourceType,
                resourceData.resourceKey);

        Assert.assertNotNull(subsystem);

        Queue<Resource> unparsedResources = new LinkedList<Resource>();
        unparsedResources.add(subsystem);

        List<Resource> foundResources = new ArrayList<Resource>();
        while (!unparsedResources.isEmpty()) {
            Resource currentResource = unparsedResources.poll();

            for (Resource childResource : currentResource.getChildResources()) {
                unparsedResources.add(childResource);
                if (childResource.getResourceType().getName().equals(resourceData.subResourceType)) {
                    foundResources.add(childResource);
                }//from w w  w.  j a va 2s  . c om
            }
        }

        for (Resource resourceUnderTest : foundResources) {
            log.info(foundResources);

            assert resourceUnderTest
                    .getId() != 0 : "Resource not properly initialized. Id = 0. Try extending sleep after discovery.";
            Configuration resourceUnderTestConfig = configurationManager
                    .loadResourceConfiguration(resourceUnderTest.getId());

            Assert.assertNotNull(resourceUnderTestConfig);
            Assert.assertFalse(resourceUnderTestConfig.getProperties().isEmpty());

            boolean specialPropertyFound = false;
            for (Property property : resourceUnderTestConfig.getProperties()) {
                if (property.getName().equals(resourceData.specialConfigurationProperty)) {
                    Assert.assertNotNull(((PropertySimple) property).getStringValue());
                    specialPropertyFound = true;
                    break;
                }
            }

            Assert.assertTrue(specialPropertyFound,
                    resourceData.specialConfigurationProperty + "property not found in the list of properties");

            ConfigurationUpdateRequest testUpdateRequest = new ConfigurationUpdateRequest(1,
                    resourceUnderTestConfig, resourceUnderTest.getId());
            ConfigurationUpdateResponse response = configurationManager
                    .executeUpdateResourceConfigurationImmediately(testUpdateRequest);

            Assert.assertNotNull(response);
        }
    }
}

From source file:org.rhq.modules.plugins.jbossas7.itest.standalone.TemplatedResourcesTest.java

@Test(priority = 11)
public void loadUpdateTemplatedResourceConfiguration() throws Exception {
    ConfigurationManager configurationManager = this.pluginContainer.getConfigurationManager();

    for (ResourceData resourceData : testResourceData) {
        ResourceType resourceType = new ResourceType(resourceData.resourceTypeName, PLUGIN_NAME,
                ResourceCategory.SERVICE, null);
        Resource subsystem = waitForResourceByTypeAndKey(platform, server, resourceType,
                resourceData.resourceKey);

        Assert.assertNotNull(subsystem);

        Queue<Resource> unparsedResources = new LinkedList<Resource>();
        unparsedResources.add(subsystem);

        List<Resource> foundResources = new ArrayList<Resource>();
        while (!unparsedResources.isEmpty()) {
            Resource currentResource = unparsedResources.poll();

            for (Resource childResource : currentResource.getChildResources()) {
                unparsedResources.add(childResource);
                if (childResource.getResourceType().getName().equals(resourceData.subResourceType)) {
                    foundResources.add(childResource);
                }//from   ww w. j a  v a2s.c o m
            }
        }

        for (Resource resourceUnderTest : foundResources) {
            log.info(foundResources);

            assert resourceUnderTest
                    .getId() != 0 : "Resource not properly initialized. Id = 0. Try extending sleep after discovery.";
            Configuration resourceUnderTestConfig = configurationManager
                    .loadResourceConfiguration(resourceUnderTest.getId());

            Assert.assertNotNull(resourceUnderTestConfig);
            Assert.assertFalse(resourceUnderTestConfig.getProperties().isEmpty());

            boolean specialPropertyFound = false;
            for (Property property : resourceUnderTestConfig.getProperties()) {
                if (property.getName().equals(resourceData.specialConfigurationProperty)) {
                    Assert.assertNotNull(((PropertySimple) property).getStringValue());
                    specialPropertyFound = true;
                    break;
                }
            }

            Assert.assertTrue(specialPropertyFound,
                    resourceData.specialConfigurationProperty + "property not found in the list of properties");

            ConfigurationUpdateRequest testUpdateRequest = new ConfigurationUpdateRequest(1,
                    resourceUnderTestConfig, resourceUnderTest.getId());
            ConfigurationUpdateResponse response = configurationManager
                    .executeUpdateResourceConfigurationImmediately(testUpdateRequest);

            Assert.assertNotNull(response);
        }
    }
}

From source file:org.polymap.core.model2.engine.EntityRepositoryImpl.java

public EntityRepositoryImpl(final EntityRepositoryConfiguration config) {
    this.config = config;

    // init store
    getStore().init(new StoreRuntimeContextImpl());

    // init infos
    log.info("Initialializing Composite types:");
    Queue<Class<? extends Composite>> queue = new LinkedList();
    queue.addAll(Arrays.asList(config.getEntities()));

    while (!queue.isEmpty()) {
        log.info("    Composite type: " + queue.peek());
        CompositeInfoImpl info = new CompositeInfoImpl(queue.poll());
        infos.put(info.getType(), info);

        // mixins
        queue.addAll(info.getMixins());/*from w ww .j  a va2 s. co m*/

        // Composite properties
        for (PropertyInfo propInfo : info.getProperties()) {
            if (Composite.class.isAssignableFrom(propInfo.getType())) {
                queue.offer(propInfo.getType());
            }
        }
    }
}

From source file:gobblin.util.HadoopUtils.java

/**
 * This method is an additive implementation of the {@link FileSystem#rename(Path, Path)} method. It moves all the
 * files/directories under 'from' path to the 'to' path without overwriting existing directories in the 'to' path.
 *
 * <p>/*from w w  w  .  j a v  a2  s  . c o m*/
 * The rename operation happens at the first non-existent sub-directory. If a directory at destination path already
 * exists, it recursively tries to move sub-directories. If all the sub-directories also exist at the destination,
 * a file level move is done
 * </p>
 *
 * @param fileSystem on which the data needs to be moved
 * @param from path of the data to be moved
 * @param to path of the data to be moved
 */
public static void renameRecursively(FileSystem fileSystem, Path from, Path to) throws IOException {

    log.info(String.format("Recursively renaming %s in %s to %s.", from, fileSystem.getUri(), to));

    FileSystem throttledFS = getOptionallyThrottledFileSystem(fileSystem, 10000);

    ExecutorService executorService = ScalingThreadPoolExecutor.newScalingThreadPool(1, 100, 100,
            ExecutorsUtils.newThreadFactory(Optional.of(log), Optional.of("rename-thread-%d")));
    Queue<Future<?>> futures = Queues.newConcurrentLinkedQueue();

    try {
        if (!fileSystem.exists(from)) {
            throw new IOException("Trying to rename a path that does not exist! " + from);
        }

        futures.add(executorService.submit(new RenameRecursively(throttledFS, fileSystem.getFileStatus(from),
                to, executorService, futures)));
        int futuresUsed = 0;
        while (!futures.isEmpty()) {
            try {
                futures.poll().get();
                futuresUsed++;
            } catch (ExecutionException | InterruptedException ee) {
                throw new IOException(ee.getCause());
            }
        }

        log.info(String.format("Recursive renaming of %s to %s. (details: used %d futures)", from, to,
                futuresUsed));

    } finally {
        ExecutorsUtils.shutdownExecutorService(executorService, Optional.of(log), 1, TimeUnit.SECONDS);
    }
}

From source file:org.protempa.backend.ksb.SimpleKnowledgeSourceBackend.java

private Collection<String> collectSubtreePropositionIdsInt(String[] propIds, boolean narrower,
        boolean inDataSource) {
    Set<String> result = new HashSet<>(Arrays.asSet(propIds));
    Queue<String> queue = new LinkedList<>();
    queue.addAll(result);//from   w w  w .j a  va 2  s.com
    while (!queue.isEmpty()) {
        String propId = queue.poll();
        PropositionDefinition pd = this.propDefsMap.get(propId);
        if (!inDataSource || pd.getInDataSource()) {
            result.add(propId);
        }
        if (narrower) {
            Arrays.addAll(queue, pd.getChildren());
        } else {
            Arrays.addAll(queue, pd.getInverseIsA());
        }
    }
    return result;
}

From source file:org.apache.http.HC4.impl.auth.HttpAuthenticator.java

public void generateAuthResponse(final HttpRequest request, final AuthState authState,
        final HttpContext context) throws HttpException, IOException {
    AuthScheme authScheme = authState.getAuthScheme();
    Credentials creds = authState.getCredentials();
    switch (authState.getState()) { // TODO add UNCHALLENGED and HANDSHAKE cases
    case FAILURE:
        return;// w  w  w  .j a  v a 2s .  c  o  m
    case SUCCESS:
        ensureAuthScheme(authScheme);
        if (authScheme.isConnectionBased()) {
            return;
        }
        break;
    case CHALLENGED:
        final Queue<AuthOption> authOptions = authState.getAuthOptions();
        if (authOptions != null) {
            while (!authOptions.isEmpty()) {
                final AuthOption authOption = authOptions.remove();
                authScheme = authOption.getAuthScheme();
                creds = authOption.getCredentials();
                authState.update(authScheme, creds);
                if (this.log.isDebugEnabled()) {
                    this.log.debug("Generating response to an authentication challenge using "
                            + authScheme.getSchemeName() + " scheme");
                }
                try {
                    final Header header = doAuth(authScheme, creds, request, context);
                    request.addHeader(header);
                    break;
                } catch (final AuthenticationException ex) {
                    if (this.log.isWarnEnabled()) {
                        this.log.warn(authScheme + " authentication error: " + ex.getMessage());
                    }
                }
            }
            return;
        } else {
            ensureAuthScheme(authScheme);
        }
    }
    if (authScheme != null) {
        try {
            final Header header = doAuth(authScheme, creds, request, context);
            request.addHeader(header);
        } catch (final AuthenticationException ex) {
            if (this.log.isErrorEnabled()) {
                this.log.error(authScheme + " authentication error: " + ex.getMessage());
            }
        }
    }
}

From source file:org.finra.datagenerator.engine.scxml.SCXMLFrontierTest.java

/**
 * Test the ability of the exit flag to stop the DFS in SCXMLFrontier
 *//*from  ww w  .  j  ava 2s .  c  o  m*/
@Test
public void testExitFlag() {
    SCXMLEngine e = new SCXMLEngine();
    InputStream is = SCXMLEngineTest.class.getResourceAsStream("/bigtest.xml");
    e.setModelByInputFileStream(is);

    List<CustomTagExtension> tagExtensionList = customTagExtensionList();

    try {
        List<PossibleState> bfs = e.bfs(1);
        PossibleState p = bfs.get(0);

        try {
            is = SCXMLEngineTest.class.getResourceAsStream("/bigtest.xml");
            SCXML model = SCXMLParser.parse(new InputSource(is), null,
                    customActionsFromTagExtensions(tagExtensionList));

            SCXMLFrontier frontier = new SCXMLFrontier(p, model, tagExtensionList);
            Queue<Map<String, String>> queue = new LinkedList<>();
            AtomicBoolean flag = new AtomicBoolean(true);
            frontier.searchForScenarios(new QueueResultsProcessing(queue), flag);

            Assert.assertEquals(queue.isEmpty(), true);
        } catch (IOException | SAXException ex) {
            Assert.fail();
        }
    } catch (ModelException ex) {
        Assert.fail();
    }
}

From source file:com.microsoft.rest.serializer.FlatteningSerializer.java

@Override
public void serialize(Object value, JsonGenerator jgen, SerializerProvider provider) throws IOException {
    if (value == null) {
        jgen.writeNull();/*from w w  w. j  a  v  a 2s  .  c o m*/
        return;
    }

    // BFS for all collapsed properties
    ObjectNode root = mapper.valueToTree(value);
    ObjectNode res = root.deepCopy();
    Queue<ObjectNode> source = new LinkedBlockingQueue<ObjectNode>();
    Queue<ObjectNode> target = new LinkedBlockingQueue<ObjectNode>();
    source.add(root);
    target.add(res);
    while (!source.isEmpty()) {
        ObjectNode current = source.poll();
        ObjectNode resCurrent = target.poll();
        Iterator<Map.Entry<String, JsonNode>> fields = current.fields();
        while (fields.hasNext()) {
            Map.Entry<String, JsonNode> field = fields.next();
            ObjectNode node = resCurrent;
            String key = field.getKey();
            JsonNode outNode = resCurrent.get(key);
            if (field.getKey().matches(".+[^\\\\]\\..+")) {
                String[] values = field.getKey().split("((?<!\\\\))\\.");
                for (int i = 0; i < values.length; ++i) {
                    values[i] = values[i].replace("\\.", ".");
                    if (i == values.length - 1) {
                        break;
                    }
                    String val = values[i];
                    if (node.has(val)) {
                        node = (ObjectNode) node.get(val);
                    } else {
                        ObjectNode child = new ObjectNode(JsonNodeFactory.instance);
                        node.put(val, child);
                        node = child;
                    }
                }
                node.set(values[values.length - 1], resCurrent.get(field.getKey()));
                resCurrent.remove(field.getKey());
                outNode = node.get(values[values.length - 1]);
            }
            if (field.getValue() instanceof ObjectNode) {
                source.add((ObjectNode) field.getValue());
                target.add((ObjectNode) outNode);
            } else if (field.getValue() instanceof ArrayNode && (field.getValue()).size() > 0
                    && (field.getValue()).get(0) instanceof ObjectNode) {
                Iterator<JsonNode> sourceIt = field.getValue().elements();
                Iterator<JsonNode> targetIt = outNode.elements();
                while (sourceIt.hasNext()) {
                    source.add((ObjectNode) sourceIt.next());
                    target.add((ObjectNode) targetIt.next());
                }
            }
        }
    }
    jgen.writeTree(res);
}

From source file:com.epam.reportportal.apache.http.impl.auth.HttpAuthenticator.java

public void generateAuthResponse(final HttpRequest request, final AuthState authState,
        final HttpContext context) throws HttpException, IOException {
    AuthScheme authScheme = authState.getAuthScheme();
    Credentials creds = authState.getCredentials();
    switch (authState.getState()) {
    case FAILURE:
        return;// ww w.  j a  v a2s.  c  om
    case SUCCESS:
        ensureAuthScheme(authScheme);
        if (authScheme.isConnectionBased()) {
            return;
        }
        break;
    case CHALLENGED:
        final Queue<AuthOption> authOptions = authState.getAuthOptions();
        if (authOptions != null) {
            while (!authOptions.isEmpty()) {
                final AuthOption authOption = authOptions.remove();
                authScheme = authOption.getAuthScheme();
                creds = authOption.getCredentials();
                authState.update(authScheme, creds);
                if (this.log.isDebugEnabled()) {
                    this.log.debug("Generating response to an authentication challenge using "
                            + authScheme.getSchemeName() + " scheme");
                }
                try {
                    final Header header = doAuth(authScheme, creds, request, context);
                    request.addHeader(header);
                    break;
                } catch (final AuthenticationException ex) {
                    if (this.log.isWarnEnabled()) {
                        this.log.warn(authScheme + " authentication error: " + ex.getMessage());
                    }
                }
            }
            return;
        } else {
            ensureAuthScheme(authScheme);
        }
    }
    if (authScheme != null) {
        try {
            final Header header = doAuth(authScheme, creds, request, context);
            request.addHeader(header);
        } catch (final AuthenticationException ex) {
            if (this.log.isErrorEnabled()) {
                this.log.error(authScheme + " authentication error: " + ex.getMessage());
            }
        }
    }
}

From source file:org.apache.hadoop.mapred.LinuxUtilizationGauger.java

/**
 * A function computes the Memory and CPU usage of all subprocess
 * @param pid            PID of the process we are interested in
 * @param pidToContent   Map between pid and the PS content
 * @param pidToChildPid  Map between pid and pid of its child process
 * @return A 2-element array which contants CPU and memory usage
 *///  ww w.  j  a va  2 s.c  o m
private double[] getSubProcessUsage(String pid, Map<String, String[]> pidToContent,
        Map<String, LinkedList<String>> pidToChildPid) {
    double cpuMemUsage[] = new double[2];

    Queue<String> pidQueue = new LinkedList<String>();
    pidQueue.add(pid);
    while (!pidQueue.isEmpty()) {
        pid = pidQueue.poll();
        for (String child : pidToChildPid.get(pid)) {
            pidQueue.add(child);
        }
        String[] psContent = pidToContent.get(pid);
        double cpuUsage = Double.parseDouble(psContent[PCPU]);
        cpuUsage = percentageToGHz(cpuUsage);
        double memUsage = Double.parseDouble(psContent[RSS]);
        // "ps -eo rss" gives memory in kB. We convert it in GB
        memUsage /= 1000000d;
        cpuMemUsage[0] += cpuUsage;
        cpuMemUsage[1] += memUsage;
    }
    return cpuMemUsage;
}