FastSortedSet.java

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/*
 * Javolution - Java(TM) Solution for Real-Time and Embedded Systems
 * Copyright (C) 2012 - Javolution (http://javolution.org/)
 * All rights reserved.
 * 
 * Permission to use, copy, modify, and distribute this software is
 * freely granted, provided that this notice is preserved.
 */
package javolution.util;
 
import static javolution.lang.Realtime.Limit.LOG_N;
 
import java.util.SortedSet;
 
import javolution.lang.Realtime;
import javolution.util.function.Equalities;
import javolution.util.function.Equality;
import javolution.util.internal.map.sorted.FastSortedMapImpl;
import javolution.util.internal.set.sorted.AtomicSortedSetImpl;
import javolution.util.internal.set.sorted.SharedSortedSetImpl;
import javolution.util.internal.set.sorted.UnmodifiableSortedSetImpl;
import javolution.util.service.SortedSetService;
 
public class FastSortedSet<E> extends FastSet<E> implements SortedSet<E> {
 
    private static final long serialVersionUID = 0x600L; // Version.
 
    public FastSortedSet() {
        this(Equalities.STANDARD);
    }
 
    public FastSortedSet(Equality<? super E> comparator) {
        super(new FastSortedMapImpl<E, Void>(comparator, Equalities.IDENTITY)
                .keySet());
    }
 
    protected FastSortedSet(SortedSetService<E> service) {
        super(service);
    }
 
    // Views.
    //
 
    @Override
    public FastSortedSet<E> atomic() {
        return new FastSortedSet<E>(new AtomicSortedSetImpl<E>(service()));
    }
 
    @Override
    public FastSortedSet<E> shared() {
        return new FastSortedSet<E>(new SharedSortedSetImpl<E>(service()));
    }
 
    @Override
    public FastSortedSet<E> unmodifiable() {
        return new FastSortedSet<E>(new UnmodifiableSortedSetImpl<E>(service()));
    }
 
    // Change in time limit behavior.
    //
 
    @Override
    @Realtime(limit = LOG_N)
    public boolean add(E e) {
        return super.add(e);
    }
 
    @Override
    @Realtime(limit = LOG_N)
    public boolean contains(Object obj) {
        return super.contains(obj);
    }
 
    @Override
    @Realtime(limit = LOG_N)
    public boolean remove(Object obj) {
        return super.remove(obj);
    }
 
    // SortedSet Interface.
    //
 
    @Override
    @Realtime(limit = LOG_N)
    public FastSortedSet<E> subSet(E fromElement, E toElement) {
        return new FastSortedSet<E>(service().subSet(fromElement, toElement));
    }
 
    @Override
    @Realtime(limit = LOG_N)
    public FastSortedSet<E> headSet(E toElement) {
        return subSet(first(), toElement);
    }
 
    @Override
    @Realtime(limit = LOG_N)
    public FastSortedSet<E> tailSet(E fromElement) {
        return subSet(fromElement, last());
    }
 
    @Override
    public E first() {
        return service().first();
    }
 
    @Override
    public E last() {
        return service().last();
    }
 
    // Misc.
    //
 
    @Override
    public FastSortedSet<E> addAll(E... elements) {
        return (FastSortedSet<E>) super.addAll(elements);
    }
 
    @Override
    public FastSortedSet<E> addAll(FastCollection<? extends E> that) {
        return (FastSortedSet<E>) super.addAll(that);
    }
 
    @Override
    protected SortedSetService<E> service() {
        return (SortedSetService<E>) super.service();
    }
 
}