Example usage for java.util Collections max

Introduction

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

Prototype

public static <T extends Object & Comparable<? super T>> T max(Collection<? extends T> coll) 

Source Link

Document

Returns the maximum element of the given collection, according to the natural ordering of its elements.

Usage

From source file:info.magnolia.cms.beans.config.ModuleRegistration.java

/**
 * Calculates the level of dependency. 0 means no dependency. If no of the dependencies has itself dependencies is
 * this level 1. If one or more of the dependencies has a dependencies has a dependency it would return 2. And so on
 * .../*  w  w  w  .j  a  v  a  2s.  c  o m*/
 * @param def module definition
 * @return the level
 */
private int calcDependencyLevel(ModuleDefinition def) {
    if (def.getDependencies() == null || def.getDependencies().size() == 0) {
        return 0;
    }
    List dependencyLevels = new ArrayList();
    for (Iterator iter = def.getDependencies().iterator(); iter.hasNext();) {
        DependencyDefinition dep = (DependencyDefinition) iter.next();
        ModuleDefinition depDef = this.getModuleDefinition(dep.getName());
        dependencyLevels.add(new Integer(calcDependencyLevel(depDef)));
    }
    return ((Integer) Collections.max(dependencyLevels)).intValue() + 1;
}

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From source file:org.jahia.modules.wiki.WikiURLInterceptor.java

String replaceRefsByPlaceholders(final String originalValue, final Map<String, Long> newRefs,
        final Map<String, Long> oldRefs, String workspace) throws RepositoryException {

    if (logger.isDebugEnabled()) {
        logger.debug("Before replaceRefsByPlaceholders : " + originalValue);
    }//from  www  . j  av a2 s . c o  m

    String pathPart = originalValue;
    if (pathPart.startsWith(dmsContext)) {
        // Remove DOC context part
        pathPart = StringUtils.substringAfter(StringUtils.substringAfter(pathPart, dmsContext), "/");
    } else {
        return originalValue;
    }

    final String path = "/" + WebUtils.urlDecode(pathPart);

    return JCRTemplate.getInstance().doExecuteWithSystemSession(null, workspace, null,
            new JCRCallback<String>() {
                public String doInJCR(JCRSessionWrapper session) throws RepositoryException {
                    String value = originalValue;
                    JCRNodeWrapper reference;
                    try {
                        String currentPath = path;
                        // retrieve path
                        while (true) {
                            if (StringUtils.contains(currentPath, '/')) {
                                currentPath = StringUtils.substringAfter(currentPath, "/");
                            } else {
                                throw new PathNotFoundException("not found in " + path);
                            }
                            try {
                                reference = session.getNode(JCRContentUtils.escapeNodePath("/" + currentPath));
                                break;
                            } catch (PathNotFoundException e) {
                                // continue
                            }
                        }
                        value = DOC_CONTEXT_PLACEHOLDER + StringUtils.substringAfter(value, dmsContext);
                    } catch (PathNotFoundException e) {
                        throw new ConstraintViolationException("Invalid link : " + path, e);
                    }
                    String id = reference.getIdentifier();
                    if (!newRefs.containsKey(id)) {
                        if (oldRefs.containsKey(id)) {
                            newRefs.put(id, oldRefs.get(id));
                        } else {
                            Long max = Math.max(oldRefs.isEmpty() ? 0 : Collections.max(oldRefs.values()),
                                    newRefs.isEmpty() ? 0 : Collections.max(newRefs.values()));
                            newRefs.put(id, max + 1);
                        }
                    }
                    Long index = newRefs.get(id);
                    String link = "/##ref:link" + index + "##";
                    value = WebUtils.urlDecode(value).replace(path, link);
                    if (logger.isDebugEnabled()) {
                        logger.debug("After replaceRefsByPlaceholders : " + value);
                    }
                    return value;
                }
            });
}

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From source file:org.apache.hadoop.hbase.client.TestMultipleTimestamps.java

/**
 * Uses the TimestampFilter on a Get to request a specified list of
 * versions for the row/column specified by rowIdx & colIdx.
 *
 *//*ww  w  . j  a  v  a  2 s  . c  o m*/
private Cell[] getNVersions(HTable ht, byte[] cf, int rowIdx, int colIdx, List<Long> versions)
        throws IOException {
    byte row[] = Bytes.toBytes("row:" + rowIdx);
    byte column[] = Bytes.toBytes("column:" + colIdx);
    Get get = new Get(row);
    get.addColumn(cf, column);
    get.setMaxVersions();
    get.setTimeRange(Collections.min(versions), Collections.max(versions) + 1);
    Result result = ht.get(get);

    return result.rawCells();
}

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From source file:dk.nsi.haiba.minipasconverter.dao.impl.MinipasDAOImpl.java

public <T extends MinipasRowWithRecnum> void buildCache(Map<Integer, Collection<T>> destination,
        RowMapper<T> rowMapper, String tableName, int currentRecnum) {
    Monitor mon = MonitorFactory.start("MinipasDAOImpl.buildCache");
    List<T> query = jdbc.query("SELECT * FROM " + minipasPrefix + tableName
            + " WHERE V_RECNUM >= ? ORDER BY V_RECNUM FETCH FIRST " + cacheSize + " ROWS ONLY", rowMapper,
            currentRecnum);//w  w  w . j  a v a  2s.c  o m

    // be sure to tell that we have already been here for this recnum, even if there is no data in the loop
    destination.put(currentRecnum, new ArrayList<T>());
    for (T t : query) {
        // store in cache
        Collection<T> collection = destination.get(t.getV_recnum());
        if (collection == null) {
            collection = new ArrayList<T>();
            destination.put(t.getV_recnum(), collection);
        }
        collection.add(t);
    }

    if (query.size() == cacheSize) {
        if (destination.size() == 1) {
            // fatal error, we can never retrieve all data for this recnum
            throw new RuntimeException(
                    "cache size of " + cacheSize + " is not enough to contain data for recnum " + currentRecnum
                            + " from table " + tableName);
        }
        // drop the collection with the largest recnum as this may have been cut short (by the fetch limit)
        Integer max_recnum = Collections.max(destination.keySet());
        destination.remove(max_recnum);
    }

    mon.stop();
}

---

From source file:fNIRs.FNIRsStats.java

public static void oldWriteANOVAs(File outFile, GroupedChannels data, List<String> groupNames,
        List<Integer> conditions, int numChunks, int precision) {
    // open file for writing with a nice print stream object:
    PrintWriter ostream = makePWriter(outFile); // OKAY VAR NAME?
    // get all condition-group sequences:
    ArrayList<GroupedChannels.TaggedDataSequence> allTDSs = data.getAllSelectedTDSs(groupNames, conditions);

    // chunkData(allTDSs, numChunks); // COMMENT THIS LATER

    // calculate required widths for printed names and condition numbers:
    int nameWidth = longestLength(groupNames); // length of longest name
    int conditionWidth = // number of digits in the largest condition number
            String.valueOf(Collections.max(conditions)).length();
    // make sure the fields will be wide enough to hold the ANOVA values,
    // which will consist of a 0 or 1 followed by a . and precision 0s:
    int idFieldWidth = nameWidth + 2 + conditionWidth; // 2 == " c".length()
    if (idFieldWidth < precision + 2) { // 2 == "1.".length()
        // if not, increase the condition width so the total field width is
        // large enough:
        // System.out.println("ANOVA values are wider than identifiers.");
        idFieldWidth = precision + 2;/*from ww w  . j a  v a 2 s  .c  o  m*/
    }
    String idFieldFormat = "%-" + idFieldWidth + "s"; // format string

    // output the first row, containing identifying information for each
    // group-condition combination:
    // first, output proper-width placeholder for the identifier column:
    ostream.printf("%" + idFieldWidth + "s  ", ""); // TOO HACKY??
    // then, output all tds identifiers:
    for (GroupedChannels.TaggedDataSequence tds : allTDSs) {
        ostream.printf(idFieldFormat + "  ", tds.getGroupName() + " c" + tds.getCondition());
        // ostream.printf(idFieldFormat + "  ",
        // tds.getGroupName(),
        // tds.getCondition());
    }
    ostream.println(); // print newline
    // output ANOVA values line by line:
    OneWayAnova myANOVA = new OneWayAnova();
    for (GroupedChannels.TaggedDataSequence first : allTDSs) {
        // output tds identifier in first column:
        ostream.printf(idFieldFormat + "  ", first.getGroupName() + " c" + first.getCondition());
        // create Collection to send to the ANOVA object:
        LinkedList<double[]> dataSets = new LinkedList<double[]>();
        // convert first's data sequence to an array, then add it to
        // dataSets
        dataSets.add(toPrimitiveDoubleArray(first.getData()));
        dataSets.add(null); // placeholder for second's data sequence
        for (GroupedChannels.TaggedDataSequence second : allTDSs) {
            // convert and add second's data sequence to position one in
            // dataSets:
            dataSets.set(1, toPrimitiveDoubleArray(second.getData()));
            double result = -1; // not a valid ANOVA value so we know if
            // something went wrong
            try {
                result = myANOVA.anovaPValue(dataSets);
                // if (first == second) { // if the two TDSs are the same
                // TDS,
                // result = 1; // then the ANOVA value should be 1, even
                // though a divide-by-zero
                // }
            } catch (Exception ex) {
                ostream.println();
                localError("unknown problem calculating ANOVA: " + ex.getMessage());
            }
            if (result != result) { // if result is NaN
                System.out.println("NaN on " + first.getGroupName() + " c" + first.getCondition() + " and "
                        + second.getGroupName() + " c" + second.getCondition());
            }
            ostream.printf("%-" + idFieldWidth + "." + precision + "f  ", result);
        }
        ostream.println(); // print newline
    }
    ostream.close();
}

---

From source file:org.apache.hadoop.hbase.client.TestMultipleTimestamps.java

private ResultScanner scan(HTable ht, byte[] cf, Integer[] rowIndexes, Integer[] columnIndexes, Long[] versions,
        int maxVersions) throws IOException {
    Arrays.asList(rowIndexes);/*from   w  w w.j av  a  2s  .c o m*/
    byte startRow[] = Bytes.toBytes("row:" + Collections.min(Arrays.asList(rowIndexes)));
    byte endRow[] = Bytes.toBytes("row:" + Collections.max(Arrays.asList(rowIndexes)) + 1);
    Scan scan = new Scan(startRow, endRow);
    for (Integer colIdx : columnIndexes) {
        byte column[] = Bytes.toBytes("column:" + colIdx);
        scan.addColumn(cf, column);
    }
    scan.setMaxVersions(maxVersions);
    scan.setTimeRange(Collections.min(Arrays.asList(versions)), Collections.max(Arrays.asList(versions)) + 1);
    ResultScanner scanner = ht.getScanner(scan);
    return scanner;
}

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From source file:org.squashtest.tm.domain.library.structures.LibraryTree.java

/**
 * return the depth of the tree, ie how many layers does the tree count.
 * @return the depth./*from   ww w .  j  a  v a 2 s . com*/
 */
public int getDepth() {
    return Collections.max(layers.keySet()) + 1;
}

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From source file:org.apache.lens.cube.metadata.CubeFactTable.java

public Date getStartTime() {
    return Collections.max(Lists.newArrayList(getRelativeStartTime(), getAbsoluteStartTime()));
}

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From source file:org.libreplan.importers.JiraOrderElementSynchronizer.java

/**
 * Loop through all <code>workLogItems</code> and get the latest date
 *
 * @param workLogItems// w  w  w.j  a  va  2s .  c  o  m
 *            list of workLogItems
 * @return latest date
 */
private Date getTheLatestWorkLoggedDate(List<WorkLogItemDTO> workLogItems) {
    List<Date> dates = new ArrayList<Date>();
    for (WorkLogItemDTO workLogItem : workLogItems) {
        if (workLogItem.getStarted() != null) {
            dates.add(workLogItem.getStarted());
        }
    }
    return Collections.max(dates);
}

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From source file:com.turn.griffin.GriffinLibCacheUtil.java

public Map<String, String> getLocalFileLatestVersion() {

    Map<String, String> filenameAndVersion = new ArrayMap<>();

    Map<String, File> localFileMap = getLocalFileMap();
    for (Map.Entry<String, File> entry : localFileMap.entrySet()) {

        List<File> fileVersions = Arrays
                .asList(entry.getValue().listFiles((FileFilter) DirectoryFileFilter.DIRECTORY));

        List<String> versions = new ArrayList<>(
                Collections2.transform(fileVersions, new Function<File, String>() {
                    @Override/*from   w ww  . j  a  v  a2  s  . c  om*/
                    public String apply(File file) {
                        return file.getName();
                    }
                }));

        filenameAndVersion.put(entry.getKey(), Collections.max(versions));
    }
    return filenameAndVersion;
}

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