001/*
002 * JPPF.
003 * Copyright (C) 2005-2015 JPPF Team.
004 * http://www.jppf.org
005 *
006 * Licensed under the Apache License, Version 2.0 (the "License");
007 * you may not use this file except in compliance with the License.
008 * You may obtain a copy of the License at
009 *
010 *   http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018
019package org.jppf.utils.collections;
020
021import java.util.*;
022
023/**
024 * A {@link Hashtable} whose values are {@link Collection} instances (specialized in concrete subclasses).
025 * @param <K> the type of the keys.
026 * @param <V> the type of the objects in the map's collection values.
027 * @author Laurent Cohen
028 */
029public abstract class AbstractCollectionHashtable<K, V> extends AbstractCollectionMap<K, V>
030{
031  /**
032   * Default constructor.
033   */
034  public AbstractCollectionHashtable()
035  {
036    this.map = createMap();
037  }
038
039  @Override
040  protected Map<K, Collection<V>> createMap()
041  {
042    return new Hashtable<>();
043  }
044
045  @Override
046  public void putValue(final K key, final V value)
047  {
048    Collection<V> coll = createOrGetCollectionSynchronized(key);
049    coll.add(value);
050  }
051
052  @Override
053  public void addValues(final K key, final V... values)
054  {
055    Collection<V> coll = createOrGetCollectionSynchronized(key);
056    for (V value: values) coll.add(value);
057  }
058}