001/* 
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *   http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied.  See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 */
019package org.apache.felix.ipojo;
020
021/**
022 * A factory state listener received notification about monitored factory state changes.
023 * This listener allows anyone to be notified when the listened factory state changes. 
024 * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a>
025 */
026public interface FactoryStateListener {
027    
028    /**
029     * Notification listener.
030     * Each time an instance state changes, this method is called
031     * with the new factory state.
032     * @param factory the changing factory
033     * @param newState the new factory state
034     */
035    void stateChanged(Factory factory, int newState);
036}