/**
 * 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.smartdata.conf;

import java.util.List;

/**
 * Properties that can be reconfigured at runtime.
 * Note: ReconfigurableRegistry should be used to register
 * the reconfigurable properties, otherwise won't get chance
 * to reconfigure.
 */
public interface Reconfigurable {
  /**
   * Called when the property's value is reconfigured.
   * @param property
   * @param newVal
   * @throws ReconfigureException
   */
  void reconfigureProperty(String property, String newVal)
      throws ReconfigureException;

  /**
   * Return the reconfigurable properties that supported.
   * @return
   */
  List<String> getReconfigurableProperties();
}
