ConcurrentSetFactory.java

/*
 * Copyright (C) 2012 Facebook, Inc.
 *
 * 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 com.facebook.collections;

import java.util.Collections;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;

public class ConcurrentSetFactory<V> implements SetFactory<V, Set<V>> {
  @Override
  public Set<V> create() {
    return Collections.newSetFromMap(new ConcurrentHashMap<V, Boolean>());
  }
}