    001// Copyright 2006, 2011 The Apache Software Foundation
    002//
    003// Licensed under the Apache License, Version 2.0 (the "License");
    004// you may not use this file except in compliance with the License.
    005// You may obtain a copy of the License at
    006//
    007//     http://www.apache.org/licenses/LICENSE-2.0
    008//
    009// Unless required by applicable law or agreed to in writing, software
    010// distributed under the License is distributed on an "AS IS" BASIS,
    011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    012// See the License for the specific language governing permissions and
    013// limitations under the License.
    014
    015package org.apache.tapestry5.ioc.services;
    016
    017/**
    018 * Event hub for notifications when the IOC {@link org.apache.tapestry5.ioc.Registry} shuts down.
    019 */
    020public interface RegistryShutdownHub
    021{
    022    /**
    023     * Adds a listener for eventual notification.
    024     */
    025    void addRegistryShutdownListener(RegistryShutdownListener listener);
    026
    027    /**
    028     * Adds a listener for eventual notification when the registry shuts down.  Runtime exceptions thrown by the listener
    029     * will be logged and ignored.
    030     *
    031     * @since 5.3
    032     */
    033    void addRegistryShutdownListener(Runnable listener);
    034
    035    /**
    036     * Adds a listener for eventual notification. RegistryWillShutdownListeners are notified before any standard listeners,
    037     * and before service proxies and other parts of the Registry are  disabled. Runtime exceptions thrown by the listener will
    038     * be logged and ignored.
    039     *
    040     * @since 5.3
    041     */
    042    void addRegistryWillShutdownListener(Runnable listener);
    043}