    001// Copyright 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.services.assets;
    016
    017import org.apache.tapestry5.commons.Resource;
    018
    019/**
    020 * Used by some {@link ResourceTransformer} implementations to track additional dependencies that can arise
    021 * when the underlying resource being transformed can be dependent on other resources (for instance, if it has the
    022 * notion of "including" or "importing" content).
    023 *
    024 * @since 5.3
    025 */
    026public interface ResourceDependencies
    027{
    028    /**
    029     * Marks the dependency as an additional resource. A change to the dependency is considered the same as a change to
    030     * the resource being transformed.
    031     *
    032     * @param dependency
    033     */
    034    void addDependency(Resource dependency);
    035}