org.thiesen.collections.set.impl.MutableHashSet.java Source code

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Here is the source code for org.thiesen.collections.set.impl.MutableHashSet.java

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/*
 *  This file is part of Thiesen Collections.
 *  
 *  Copyright (c) 2010 by Marcus Thiesen (marcus@thiesen.org)
 *
 *  Thiesen Collections is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  Thiesen Collections is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with Thiesen Collections.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.thiesen.collections.set.impl;

import java.io.Serializable;
import java.util.HashSet;
import java.util.Set;

import com.google.common.collect.Sets;

public class MutableHashSet<E> extends AbstractDelegatingMutableSet<E> implements Serializable {

    private static final long serialVersionUID = 6774301323046446777L;

    private final HashSet<E> _hashSet;

    private MutableHashSet(final HashSet<E> set) {
        super(set);
        _hashSet = set;
    }

    public static <T> MutableHashSet<T> withExpectedSize(final int size) {
        return new MutableHashSet<T>(Sets.<T>newHashSetWithExpectedSize(size));
    }

    public static <T> MutableHashSet<T> copyOf(final Iterable<T> elements) {
        return new MutableHashSet<T>(Sets.newHashSet(elements));
    }

    public static <T> MutableHashSet<T> copyOf(final T... elements) {
        return new MutableHashSet<T>(Sets.newHashSet(elements));
    }

    public static <T> MutableHashSet<T> of(final T... elements) {
        return new MutableHashSet<T>(Sets.newHashSet(elements));
    }

    public static <T> MutableHashSet<T> create() {
        return new MutableHashSet<T>(Sets.<T>newHashSet());
    }

    @SuppressWarnings("unchecked")
    @Override
    public Set<E> copyToMutableCollections() {
        return (Set<E>) _hashSet.clone();
    }

    @Override
    public MutableHashSet<E> append(final E e) {
        add(e);
        return this;
    }

}