ChainedStringSet.java

/**
 * Copyright 2009 Google 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 org.waveprotocol.wave.model.util;

/**
 * Chained StringSet implementation
 *
 * @author danilatos@google.com (Daniel Danilatos)
 */
public class ChainedStringSet extends ChainedData<ReadableStringSet, StringSet> {

  /**
   * Root
   */
  public ChainedStringSet() {
    super(CollectionUtils.STRING_SET_DOMAIN);
  }

  /**
   * Chained
   */
  public ChainedStringSet(ChainedData<ReadableStringSet, StringSet> parent) {
    super(parent);
  }

  /** Create a child set */
  public ChainedStringSet createExtension() {
    return new ChainedStringSet(this);
  }
}