001// Copyright 2013 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.internal.services;
016
017/**
018 * Forces a reload of all caches and invalidates the component class cache. This is only allowed when production mode is off.
019 *
020 * @since 5.4
021 */
022public interface ReloadHelper
023{
024    /**
025     * Force a reload (if in development mode). Writes an {@link org.apache.tapestry5.alerts.AlertManager} alert message.
026     */
027    void forceReload();
028
029    /**
030     * Adds a callback to be invoked from {@link #forceReload()}.
031     *
032     * @param callback
033     */
034    void addReloadCallback(Runnable callback);
035}