package org.apache.archiva.redback.components.registry;

/*
 * 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.
 */

/**
 * Receives notifications of configuration changes in thre registry.
 */
public interface RegistryListener
{
    /**
     * Notify the object that there is about to be a configuration change.
     *
     * @param registry      the registry that was changed
     * @param propertyName  the property being changed
     * @param propertyValue the value the property is about to be changed to
     */
    void beforeConfigurationChange( Registry registry, String propertyName, Object propertyValue );

    /**
     * Notify the object that there has been a configuration change.
     *
     * @param registry      the registry that was changed
     * @param propertyName  the property what was changed
     * @param propertyValue the value the property was changed to
     */
    void afterConfigurationChange( Registry registry, String propertyName, Object propertyValue );
}