/*
 *
 * 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.qpid.server.model;

public interface ConfigurationChangeListener
{
    /**
     * Inform the listener that the passed object has changed state
     *
     * @param object the object whose state has changed
     * @param oldState the state prior to the change
     * @param newState the state after the change
     */
    void stateChanged(ConfiguredObject object, State oldState, State newState);
    
    
    void childAdded(ConfiguredObject object, ConfiguredObject child);

    void childRemoved(ConfiguredObject object, ConfiguredObject child);

    void attributeSet(ConfiguredObject object, String attributeName, Object oldAttributeValue, Object newAttributeValue);
}