Package org.apache.commons.collections.comparators

Examples of org.apache.commons.collections.comparators.NullComparator

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     * OrderedMap uses TreeMap as its known comparison.
     *
     * @return a map that is known to be valid
     */
    public Map makeConfirmedMap() {
        return new TreeMap(new NullComparator());
    }
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     * The only confirmed collection we have that is ordered is the sorted one.
     * Thus, sort the keys.
     */
    public Object[] getSampleKeys() {
        List list = new ArrayList(Arrays.asList(super.getSampleKeys()));
        Collections.sort(list, new NullComparator());
        return list.toArray();
    }
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     */
    public static Comparator nullLowComparator(Comparator comparator) {
        if (comparator == null) {
            comparator = NATURAL_COMPARATOR;
        }
        return new NullComparator(comparator, false);
    }
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     */
    public static Comparator nullHighComparator(Comparator comparator) {
        if (comparator == null) {
            comparator = NATURAL_COMPARATOR;
        }
        return new NullComparator(comparator, true);
    }
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     * @param list the java.util.List to sort
     * @return ordered list
     */
    @SuppressWarnings("unchecked")
    protected List sort(List list) {
        Comparator comparator = new BeanComparator(sortColumn, new NullComparator(nullsAreHigh));
        if (!ascending) {
            comparator = new ReverseComparator(comparator);
        }
        Collections.sort(list, comparator);
        return list;
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     * @param list the java.util.List to sort
     * @return ordered list
     */
    @SuppressWarnings("unchecked")
    protected List sort(List list) {
        Comparator comparator = new BeanComparator(sortColumn, new NullComparator(nullsAreHigh));
        if (!ascending) {
            comparator = new ReverseComparator(comparator);
        }
        Collections.sort(list, comparator);
        return list;
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     * OrderedMap uses TreeMap as its known comparison.
     *
     * @return a map that is known to be valid
     */
    public Map makeConfirmedMap() {
        return new TreeMap(new NullComparator());
    }
View Full Code Here
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     * The only confirmed collection we have that is ordered is the sorted one.
     * Thus, sort the keys.
     */
    public Object[] getSampleKeys() {
        List list = new ArrayList(Arrays.asList(super.getSampleKeys()));
        Collections.sort(list, new NullComparator());
        return list.toArray();
    }
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     */
    public static Comparator nullLowComparator(Comparator comparator) {
        if (comparator == null) {
            comparator = NATURAL_COMPARATOR;
        }
        return new NullComparator(comparator, false);
    }
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     */
    public static Comparator nullHighComparator(Comparator comparator) {
        if (comparator == null) {
            comparator = NATURAL_COMPARATOR;
        }
        return new NullComparator(comparator, true);
    }
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