Example usage for java.util Collections reverse

Introduction

In this page you can find the example usage for java.util Collections reverse.

Prototype

@SuppressWarnings({ "rawtypes", "unchecked" })
public static void reverse(List<?> list)

Source Link

Document

Reverses the order of the elements in the specified list.

This method runs in linear time.

Usage

From source file:io.haze.core.Application.java

/**
 * Start this {@link Application}.//from www  .  java2s  .  co  m
 */
private void start() {
    isRunning = true;

    for (ServiceFactory factory : factories) {
        factory.createServices(this);
    }

    if (services.size() > 0) {
        // build list of nodes
        for (Node node : getServices(Node.class)) {
            nodes.add(node);
        }

        // reverse the service order, so they can be started descendingly
        Collections.reverse(services);

        // start services
        logger.info("Starting services:");

        for (Service service : services) {
            service.initialize();
            service.start();

            logger.info(String.format("  * %s", service.getName()));
        }

        // put the service order back
        Collections.reverse(services);
    }

    // register shutdown hook
    final Application app = this;

    Runtime.getRuntime().addShutdownHook(new Thread() {
        public void run() {
            if (app.isRunning()) {
                app.stop();

                return;
            }

            // forcefully exit
            System.exit(1);
        }
    });
}

From source file:edu.cornell.mannlib.vitro.webapp.startup.StartupManager.java

/**
 * Notify the listeners that the context is being destroyed, in the reverse
 * order from how they were notified at initialization.
 *///  w ww.  ja  v  a2s . c om
@Override
public void contextDestroyed(ServletContextEvent sce) {
    List<ServletContextListener> destroyList = new ArrayList<ServletContextListener>(initializeList);
    Collections.reverse(destroyList);

    for (ServletContextListener listener : destroyList) {
        try {
            log.debug("Destroying '" + listener.getClass().getName() + "'");
            listener.contextDestroyed(sce);
        } catch (Exception e) {
            log.error("Unexpected exception from contextDestroyed() on '" + listener.getClass().getName() + "'",
                    e);
        } catch (Throwable t) {
            log.fatal("Unexpected error from contextDestroyed() on '" + listener.getClass().getName() + "'", t);
            throw t;
        }
    }
    log.info("Called 'contextDestroyed' on all listeners.");
}

From source file:com.weibo.api.motan.protocol.support.ProtocolFilterDecorator.java

/**
 * <pre>//from ww  w  .j  av a 2  s. c  om
* ??
* 1?filter
* 2?filter??filtersfilter?
* 3?????filter?accessLog??accesslog
* </pre>
 * 
 * @param url
 * @param key
 * @return
 */
private List<Filter> getFilters(URL url, String key) {

    // load default filters
    List<Filter> filters = new ArrayList<Filter>();
    List<Filter> defaultFilters = ExtensionLoader.getExtensionLoader(Filter.class).getExtensions(key);
    if (defaultFilters != null && defaultFilters.size() > 0) {
        filters.addAll(defaultFilters);
    }

    // add filters via "filter" config
    String filterStr = url.getParameter(URLParamType.filter.getName());
    if (StringUtils.isNotBlank(filterStr)) {
        String[] filterNames = MotanConstants.COMMA_SPLIT_PATTERN.split(filterStr);
        for (String fn : filterNames) {
            addIfAbsent(filters, fn);
        }
    }

    // add filter via other configs, like accessLog and so on
    boolean accessLog = url.getBooleanParameter(URLParamType.accessLog.getName(),
            URLParamType.accessLog.getBooleanValue());
    if (accessLog) {
        addIfAbsent(filters, AccessLogFilter.class.getAnnotation(SpiMeta.class).name());
    }

    // sort the filters
    Collections.sort(filters, new ActivationComparator<Filter>());
    Collections.reverse(filters);
    return filters;
}

From source file:gate.util.reporting.DocTimeReporter.java

/**
 * Sorts LinkedHashMap by its values(natural descending order). keeps the
 * duplicates as it is.//from www  .  j a  va 2 s  . co  m
 *
 * @param passedMap
 *          An Object of type LinkedHashMap to be sorted by its values.
 * @return An Object containing the sorted LinkedHashMap.
 */
private LinkedHashMap<?, ?> sortHashMapByValues(LinkedHashMap<String, String> passedMap) {
    List<String> mapKeys = new ArrayList<String>(passedMap.keySet());
    List<String> mapValues = new ArrayList<String>(passedMap.values());

    Collections.sort(mapValues, new ValueComparator());
    Collections.sort(mapKeys);
    // Reversing the collection to sort the values in descending order
    Collections.reverse(mapValues);
    LinkedHashMap<String, String> sortedMap = new LinkedHashMap<String, String>();

    Iterator<String> valueIt = mapValues.iterator();
    while (valueIt.hasNext()) {
        String val = valueIt.next();
        Iterator<String> keyIt = mapKeys.iterator();
        while (keyIt.hasNext()) {
            String key = keyIt.next();
            String comp1 = passedMap.get(key).toString();
            String comp2 = val.toString();

            if (comp1.equals(comp2)) {
                passedMap.remove(key);
                mapKeys.remove(key);
                sortedMap.put(key, val);
                break;
            }
        }
    }
    return sortedMap;
}

From source file:NimbleTree.java

/**
 * Find all the paths from root to leaves. Used by NGramEDAReproductionOperation.
 * @return list of list of TreeNode, each list starting at the root and ending at a leaf. 
 *///from   w w w.  j  a  v  a  2  s.  c  o m
public ArrayList<ArrayList<TreeNode<E>>> getRootToLeafPaths() {
    ArrayList<TreeNode<E>> leafNodes = new ArrayList<TreeNode<E>>();
    // traverse the tree and find the leaf nodes
    for (TreeNode<E> node : depthFirstTraversal(getRoot())) {
        if (node.size() == 0) {
            leafNodes.add(node);
        }
    }
    ArrayList<ArrayList<TreeNode<E>>> paths = new ArrayList<ArrayList<TreeNode<E>>>();
    for (TreeNode<E> leaf : leafNodes) {
        ArrayList<TreeNode<E>> path = new ArrayList<TreeNode<E>>();
        TreeNode<E> current = leaf;
        while (current != getRoot()) {
            path.add(current);
            current = current.getParent();
        }
        // add the root
        path.add(current);
        Collections.reverse(path);
        paths.add(path);
    }
    return paths;
}

From source file:com.bigdata.dastor.thrift.server.DastorThriftServer.java

private List<ColumnOrSuperColumn> thriftifySuperColumns(Collection<IColumn> columns, boolean reverseOrder) {
    ArrayList<ColumnOrSuperColumn> thriftSuperColumns = new ArrayList<ColumnOrSuperColumn>(columns.size());
    for (IColumn column : columns) {
        List<Column> subcolumns = thriftifySubColumns(column.getSubColumns());
        if (subcolumns.isEmpty()) {
            continue;
        }/*  www.  j  a va  2 s.co m*/
        SuperColumn superColumn = new SuperColumn(column.name(), subcolumns);
        thriftSuperColumns.add(createColumnOrSuperColumn_SuperColumn(superColumn));
    }

    if (reverseOrder)
        Collections.reverse(thriftSuperColumns);

    return thriftSuperColumns;
}

From source file:com.google.gwt.emultest.java.util.TreeMapTest.java

private static <E> Collection<E> reverseCollection(Collection<E> c) {
    List<E> reversedCollection = new ArrayList<E>(c);
    Collections.reverse(reversedCollection);
    return reversedCollection;
}

From source file:com.epam.cme.storefront.util.PageTitleResolver.java

protected List<CategoryModel> getCategoryPath(final CategoryModel category) {
    final Collection<List<CategoryModel>> paths = getCommerceCategoryService().getPathsForCategory(category);
    // Return first - there will always be at least 1
    final List<CategoryModel> cat2ret = paths.iterator().next();
    Collections.reverse(cat2ret);
    return cat2ret;
}

From source file:com.silverpeas.look.SilverpeasLook.java

public String getCSSOfSpaceLook(String spaceId) {
    List<SpaceInst> path = organizationController.getSpacePath(spaceId);
    Collections.reverse(path);
    String cssURL = null;//from w w  w .j  a  v  a  2s.c  o  m
    for (SpaceInst space : path) {
        if (StringUtil.isDefined(space.getLook())) {
            cssURL = GraphicElementFactory.getCSSOfLook(space.getLook());
        }
        if (StringUtil.isDefined(cssURL)) {
            break;
        }
    }
    return cssURL;
}

From source file:annis.sqlgen.GraphWithClauseGenerator.java

private String generatePathName(URI uri) {
    StringBuilder sb = new StringBuilder();

    List<String> path = CommonHelper.getCorpusPath(uri);
    Collections.reverse(path);

    sb.append("{");
    sb.append(StringUtils.join(path, ", "));
    sb.append("}");

    return sqlString(sb.toString());
}