    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}