StoredSortedEntrySet.java

/*-
 * See the file LICENSE for redistribution information.
 *
 * Copyright (c) 2000-2005
 *      Sleepycat Software.  All rights reserved.
 *
 * $Id: StoredSortedEntrySet.java,v 12.2 2005/10/05 20:40:10 mark Exp $
 */

package com.sleepycat.collections;

import java.util.Comparator;
import java.util.Map;
import java.util.SortedSet;

public class StoredSortedEntrySet extends StoredEntrySet implements SortedSet {

    StoredSortedEntrySet(DataView mapView) {

        super(mapView);
    }

    public Comparator comparator() {

        return null;
    }

    public Object first() {

        return getFirstOrLast(true);
    }

    public Object last() {

        return getFirstOrLast(false);
    }

    public SortedSet headSet(Object toMapEntry) {

        return subSet(null, false, toMapEntry, false);
    }

    public SortedSet headSet(Object toMapEntry, boolean toInclusive) {

        return subSet(null, false, toMapEntry, toInclusive);
    }

    public SortedSet tailSet(Object fromMapEntry) {

        return subSet(fromMapEntry, true, null, false);
    }

    public SortedSet tailSet(Object fromMapEntry, boolean fromInclusive) {

        return subSet(fromMapEntry, fromInclusive, null, false);
    }

    public SortedSet subSet(Object fromMapEntry, Object toMapEntry) {

        return subSet(fromMapEntry, true, toMapEntry, false);
    }

    public SortedSet subSet(Object fromMapEntry, boolean fromInclusive,
                            Object toMapEntry, boolean toInclusive) {

        Object fromKey = (fromMapEntry != null) ?
            ((Map.Entry) fromMapEntry).getKey() : null;
        Object toKey = (toMapEntry != null) ?
            ((Map.Entry) toMapEntry).getKey() : null;
        try {
            return new StoredSortedEntrySet(
               view.subView(fromKey, fromInclusive, toKey, toInclusive, null));
        } catch (Exception e) {
            throw StoredContainer.convertException(e);
        }
    }
}

---