content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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.camel.component.zookeeper.operations;
  
  import java.util.List;
  
  import org.apache.zookeeper.Watcher.Event.EventType;
  import org.apache.zookeeper.ZooKeeper;
  import org.apache.zookeeper.data.Stat;
  
  /**
   * <code>ChildrenChangedOperation</code> is an watch driven operation. It will wait for an watched event indicating that
   * the children associated with a given node have been modified before retrieving the changed list.
   */
  public class ChildrenChangedOperation extends FutureEventDrivenOperation<List<String>> {
  
      private boolean getChangedListing;
  
      public ChildrenChangedOperation(ZooKeeper connection, String znode) {
          this(connection, znode, true);
      }
  
      public ChildrenChangedOperation(ZooKeeper connection, String znode, boolean getChangedListing) {
          super(connection, znode, EventType.NodeChildrenChanged);
          this.getChangedListing = getChangedListing;
      }
  
      @Override
      protected void installWatch() {
          connection.getChildren(getNode(), this, (int rc, String path, Object ctx, List<String> children, Stat stat) -> {
          }, null);
      }
  
      @Override
      public OperationResult<List<String>> getResult() {
          return getChangedListing ? new GetChildrenOperation(connection, node).getResult() : null;
      }
  
      @Override
      public ZooKeeperOperation<?> createCopy() throws Exception {
          ChildrenChangedOperation copy = (ChildrenChangedOperation) super.createCopy();
          copy.getChangedListing = getChangedListing;
          return copy;
      }
  }
  