Example usage for java.util LinkedList removeFirst

Introduction

In this page you can find the example usage for java.util LinkedList removeFirst.

Prototype

public E removeFirst() 

Source Link

Document

Removes and returns the first element from this list.

Usage

From source file:org.alfresco.repo.rendition.StandardRenditionLocationResolverImpl.java

private RenditionLocationImpl findOrCreateTemplatedPath(NodeRef sourceNode, String path, NodeRef companyHome) {
    if (log.isDebugEnabled()) {
        StringBuilder msg = new StringBuilder();
        msg.append("FindOrCreateTemplatedPath for ").append(sourceNode).append(", ").append(path);
        log.debug(msg.toString());/*from   w ww  .  j a v  a  2 s  .  c o  m*/
    }

    NodeService nodeService = serviceRegistry.getNodeService();

    List<String> pathElements = Arrays.asList(path.split("/"));
    LinkedList<String> folderElements = new LinkedList<String>(pathElements);

    // We need to strip out any empty strings within the path elements.
    // prior to passing this path to the fileFolderService for creation.
    // e.g. "//foo//bar///item.txt" would cause an exception.
    folderElements.removeAll(Arrays.asList(new String[] { "" }));

    // Remove 'Company Home' if it is at the start of the path.
    Serializable companyHomeName = nodeService.getProperty(companyHome, ContentModel.PROP_NAME);
    if (folderElements.getFirst().equals(companyHomeName)) {
        folderElements.removeFirst();
    }

    String fileName = folderElements.removeLast();
    if (fileName == null || fileName.length() == 0) {
        StringBuilder msg = new StringBuilder();
        msg.append("The path must include a valid filename! Path: ").append(path);
        if (log.isDebugEnabled()) {
            log.debug(msg.toString());
        }
        throw new RenditionServiceException(msg.toString());
    }

    FileFolderService fileFolderService = serviceRegistry.getFileFolderService();
    NodeRef parent = companyHome;
    if (!folderElements.isEmpty()) {
        FileInfo parentInfo = FileFolderUtil.makeFolders(fileFolderService, companyHome, folderElements,
                ContentModel.TYPE_FOLDER);
        parent = parentInfo.getNodeRef();
    }

    if (log.isDebugEnabled()) {
        log.debug("folderElements: " + folderElements);
        log.debug("parent: " + parent);
        log.debug("   " + nodeService.getType(parent) + " " + nodeService.getPath(parent));
        log.debug("fileName: " + fileName);
    }

    NodeRef child = fileFolderService.searchSimple(parent, fileName);

    if (log.isDebugEnabled()) {
        StringBuilder msg = new StringBuilder();
        msg.append("RenditionLocation parent=").append(parent).append(", child=").append(child)
                .append(", fileName=").append(fileName);
        log.debug(msg.toString());

        if (child != null) {
            log.debug("child path = " + nodeService.getPath(child));
        }
    }
    return new RenditionLocationImpl(parent, child, fileName);
}

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From source file:com.redhat.rcm.version.mgr.VersionManager.java

protected List<PomPeek> peekAtPomHierarchy(final File topPom, final VersionManagerSession session)
        throws IOException {
    final LinkedList<File> pendingPoms = new LinkedList<File>();
    pendingPoms.add(topPom.getCanonicalFile());

    final String topDir = topPom.getParentFile().getCanonicalPath();

    final Set<File> seen = new HashSet<File>();
    final List<PomPeek> peeked = new ArrayList<PomPeek>();

    while (!pendingPoms.isEmpty()) {
        final File pom = pendingPoms.removeFirst();
        seen.add(pom);/*from   w w  w  . j a v a 2  s .c o  m*/

        logger.info("PEEK: " + pom);

        final PomPeek peek = new PomPeek(pom);
        final FullProjectKey key = peek.getKey();
        if (key != null) {
            session.addPeekPom(key, pom);
            peeked.add(peek);

            final File dir = pom.getParentFile();

            final String relPath = peek.getParentRelativePath();
            if (relPath != null) {
                logger.info("Found parent relativePath: " + relPath + " in pom: " + pom);
                File parent = new File(dir, relPath);
                if (parent.isDirectory()) {
                    parent = new File(parent, "pom.xml");
                }

                logger.info("Looking for parent POM: " + parent);

                parent = parent.getCanonicalFile();
                if (parent.getParentFile().getCanonicalPath().startsWith(topDir) && parent.exists()
                        && !seen.contains(parent) && !pendingPoms.contains(parent)) {
                    pendingPoms.add(parent);
                } else {
                    logger.info("Skipping reference to non-existent parent relativePath: '" + relPath + "' in: "
                            + pom);
                }
            }

            final Set<String> modules = peek.getModules();
            if (modules != null && !modules.isEmpty()) {
                for (final String module : modules) {
                    logger.info("Found module: " + module + " in pom: " + pom);
                    File modPom = new File(dir, module);
                    if (modPom.isDirectory()) {
                        modPom = new File(modPom, "pom.xml");
                    }

                    logger.info("Looking for module POM: " + modPom);

                    if (modPom.getParentFile().getCanonicalPath().startsWith(topDir) && modPom.exists()
                            && !seen.contains(modPom) && !pendingPoms.contains(modPom)) {
                        pendingPoms.addLast(modPom);
                    } else {
                        logger.info("Skipping reference to non-existent module: '" + module + "' in: " + pom);
                    }
                }
            }
        } else {
            logger.info("Skipping " + pom + " as its a template file.");
        }
    }

    return peeked;
}

---

From source file:com.erudika.scoold.controllers.QuestionController.java

@GetMapping({ "/{id}", "/{id}/{title}" })
public String get(@PathVariable String id, @PathVariable(required = false) String title,
        @RequestParam(required = false) String sortby, HttpServletRequest req, HttpServletResponse res,
        Model model) {//from w ww .  j  a v a2s  .c  o m

    Post showPost = pc.read(id);
    if (showPost == null || !ParaObjectUtils.typesMatch(showPost)) {
        return "redirect:" + QUESTIONSLINK;
    }
    Profile authUser = utils.getAuthUser(req);
    if (!utils.canAccessSpace(authUser, showPost.getSpace())) {
        return "redirect:" + (utils.isDefaultSpacePublic() ? QUESTIONSLINK
                : SIGNINLINK + "?returnto=" + showPost.getPostLink(false, false));
    }

    Pager itemcount = utils.getPager("page", req);
    itemcount.setSortby("newest".equals(sortby) ? "timestamp" : "votes");
    List<Reply> answerslist = showPost.getAnswers(itemcount);
    LinkedList<Post> allPosts = new LinkedList<Post>();
    allPosts.add(showPost);
    allPosts.addAll(answerslist);
    utils.fetchProfiles(allPosts);
    utils.getComments(allPosts);
    utils.updateViewCount(showPost, req, res);

    model.addAttribute("path", "question.vm");
    model.addAttribute("title", utils.getLang(req).get("questions.title") + " - " + showPost.getTitle());
    model.addAttribute("description", Utils.abbreviate(Utils.stripAndTrim(showPost.getBody(), " "), 195));
    model.addAttribute("itemcount", itemcount);
    model.addAttribute("showPost", allPosts.removeFirst());
    model.addAttribute("answerslist", allPosts);
    model.addAttribute("similarquestions", utils.getSimilarPosts(showPost, new Pager(10)));
    model.addAttribute("maxCommentLength", Comment.MAX_COMMENT_LENGTH);
    model.addAttribute("maxCommentLengthError",
            Utils.formatMessage(utils.getLang(req).get("maxlength"), Comment.MAX_COMMENT_LENGTH));
    return "base";
}

---

From source file:org.apache.hadoop.hdfs.server.datanode.TestDirectoryScannerInlineFiles.java

@Test
public void testInlineBlocks() throws Exception {
    LinkedList<Long> newFormatBlocks = new LinkedList<Long>();
    // Test 1: blocks on disk and not in memory
    for (int i = 0; i < 100; i++) {
        newFormatBlocks.add(createInlineBlockFile(checksumType));
    }//from   w w  w . j av a 2  s  .c  o m
    totalBlocks += newFormatBlocks.size();
    checker().setTotalBlocks(totalBlocks).setDiffSize(newFormatBlocks.size()).setMissingMetaFile(0)
            .setMissingBlockFile(0).setMissingMemoryBlocks(newFormatBlocks.size()).setMismatchBlocks(0)
            .scanAndAssert();
    checker().setTotalBlocks(totalBlocks).setZeroDiff().scanAndAssert();

    // Test 2: removed some blocks from disk
    for (int i = 0; i < 5; i++) {
        removeFromDisk(newFormatBlocks.removeFirst());
        totalBlocks--;
    }
    checker().setTotalBlocks(totalBlocks).setDiffSize(5).setMissingMetaFile(5).setMissingBlockFile(5)
            .setMissingMemoryBlocks(0).setMismatchBlocks(0).scanAndAssert();
    checker().setTotalBlocks(totalBlocks).setZeroDiff().scanAndAssert();

    // Test 3: removed some blocks from memory
    for (int i = 0; i < 5; i++) {
        removeFromMemory(newFormatBlocks.removeFirst());
    }
    checker().setTotalBlocks(totalBlocks).setDiffSize(5).setMissingMetaFile(0).setMissingBlockFile(0)
            .setMissingMemoryBlocks(5).setMismatchBlocks(0).scanAndAssert();
    checker().setTotalBlocks(totalBlocks).setZeroDiff().scanAndAssert();

    // Test 3: truncate some blocks
    for (int i = 0; i < 5; i++) {
        truncateOnDisk(newFormatBlocks.removeFirst());
    }
    checker().setTotalBlocks(totalBlocks).setDiffSize(5).setMissingMetaFile(0).setMissingBlockFile(0)
            .setMissingMemoryBlocks(0).setMismatchBlocks(5).scanAndAssert();
    checker().setTotalBlocks(totalBlocks).setZeroDiff().scanAndAssert();

    // Test 4: truncate some, remove from memory some, remove from disk some

    for (int i = 0; i < 5; i++) {
        removeFromDisk(newFormatBlocks.removeFirst());
        totalBlocks--;
    }
    for (int i = 0; i < 7; i++) {
        removeFromMemory(newFormatBlocks.removeFirst());
    }
    for (int i = 0; i < 11; i++) {
        truncateOnDisk(newFormatBlocks.removeFirst());
    }

    checker().setTotalBlocks(totalBlocks).setDiffSize(5 + 7 + 11).setMissingMetaFile(5).setMissingBlockFile(5)
            .setMissingMemoryBlocks(7).setMismatchBlocks(11).scanAndAssert();
    checker().setTotalBlocks(totalBlocks).setZeroDiff().scanAndAssert();

}

---

From source file:com.ccc.ccm.client.activemq.StoreablePooledConnectionFactory.java

public synchronized Connection createConnection(String userName, String password) throws JMSException {
    if (stopped.get()) {
        LOG.debug("PooledConnectionFactory is stopped, skip create new connection.");
        return null;
    }//w w  w  . j ava2 s .c  om

    ConnectionKey key = new ConnectionKey(userName, password);
    LinkedList<ConnectionPool> pools = cache.get(key);

    if (pools == null) {
        pools = new LinkedList<ConnectionPool>();
        cache.put(key, pools);
    }

    ConnectionPool connection = null;
    if (pools.size() == maxConnections) {
        connection = pools.removeFirst();
    }

    // Now.. we might get a connection, but it might be that we need to
    // dump it..
    if (connection != null && connection.expiredCheck()) {
        connection = null;
    }

    if (connection == null) {
        ActiveMQConnection delegate = createConnection(key);
        connection = createConnectionPool(delegate);
    }
    pools.add(connection);
    return new PooledConnection(connection);
}

---

From source file:org.fusesource.mop.MOP.java

private void listCommand(LinkedList<String> argList) throws Exception {
    String type = "installed";
    if (!argList.isEmpty()) {
        type = argList.removeFirst();
    }/*from ww  w  . jav a2 s.co m*/

    this.artifactIds = parseArtifactList(argList);
    Set<ArtifactId> artifactIds = repository.list(type);
    for (ArtifactId a : artifactIds) {
        System.out.println(a);
    }
}

---

From source file:org.commonjava.emb.project.ProjectLoader.java

private void addProjects(final ProjectToolsSession session, final List<MavenProject> projects) {
    final DependencyGraph depGraph = session.getDependencyGraph();
    for (final MavenProject project : projects) {
        final LinkedList<Artifact> parentage = new LinkedList<Artifact>();
        MavenProject parent = project;/*from  w w  w  .j  a  v  a  2  s. c o m*/
        while (parent != null) {
            final org.apache.maven.artifact.Artifact pomArtifact = mavenRepositorySystem
                    .createArtifact(project.getGroupId(), project.getArtifactId(), project.getVersion(), "pom");

            final Artifact aetherPomArtifact = RepositoryUtils.toArtifact(pomArtifact);

            parentage.addFirst(aetherPomArtifact);

            parent = parent.getParent();
        }

        Artifact current = parentage.removeFirst();
        while (!parentage.isEmpty()) {
            final Artifact next = parentage.getFirst();

            // This is WEIRD, but the parent POM is actually a dependency of the current one,
            // since it's required in order to build the current project...
            if (LOGGER.isDebugEnabled()) {
                LOGGER.debug("Marking parent POM: " + current + " as dependency of POM: " + next);
            }
            depGraph.addDependency(next, current, true, true);

            if (!parentage.isEmpty()) {
                current = parentage.removeFirst();
            }
        }
    }
}

---

From source file:org.cloudata.core.common.ipc.CClient.java

/**
 * Get a connection from the pool, or create a new one and add it to the pool.
 * Connections to a given host/port are reused.
 *//*  www  .j av  a 2s . co m*/
private Connection getConnection(InetSocketAddress address) throws IOException {
    Connection connection;

    synchronized (connections) {
        LinkedList<Connection> hostConnections = connections.get(address);

        if (hostConnections == null) {
            hostConnections = new LinkedList<Connection>();
            connections.put(address, hostConnections);
        }
        if (hostConnections.isEmpty()) {
            connection = new Connection(address);
        } else {
            connection = hostConnections.removeFirst();
        }
        connection.touch();
    }
    // we don't invoke the method below inside "synchronized (connections)"
    // block above. The reason for that is if the server happens to be slow,
    // it will take longer to establish a connection and that will slow the
    // entire system down.
    connection.setupIOstreams();
    return connection;
}

---

From source file:org.fusesource.mop.MOP.java

private ArrayList<ArtifactId> parseArtifactList(LinkedList<String> values) throws UsageException {
    ArrayList<ArtifactId> rc = new ArrayList<ArtifactId>();
    assertNotEmpty(values);//from  ww  w. ja va 2  s. c  om
    String value = values.removeFirst();
    ArtifactId id = parseArtifactId(value);
    rc.add(id);

    while (!values.isEmpty() && isAnotherArtifactId(values.getFirst())) {
        value = values.removeFirst().substring(1);
        id = parseArtifactId(value);
        rc.add(id);
    }

    return rc;

}

---

From source file:org.fusesource.mop.MOP.java

private void execJava(LinkedList<String> argList) throws Exception {
    assertNotEmpty(argList);//from   w  ww. j  a v  a  2s  . c  om
    artifactIds = parseArtifactList(argList);
    assertNotEmpty(argList);
    className = argList.removeFirst();
    reminingArgs = argList;

    List<File> dependencies = resolveFiles();

    execClass(dependencies);
}

---

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