/**
 * Copyright 2007-2016, Kaazing Corporation. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.mina.util;

import java.util.Collection;
import java.util.IdentityHashMap;
import java.util.Set;

/**
 * An {@link IdentityHashMap}-backed {@link Set}.
 *
 * @author <a href="http://mina.apache.org">Apache MINA Project</a>
 */
public class IdentityHashSet<E> extends MapBackedSet<E> {

    private static final long serialVersionUID = 6948202189467167147L;

    public IdentityHashSet() {
        super(new IdentityHashMap<>());
    }
    
    public IdentityHashSet(int expectedMaxSize) {
        super(new IdentityHashMap<>(expectedMaxSize));
    }

    public IdentityHashSet(Collection<E> c) {
        super(new IdentityHashMap<>(), c);
    }
}
