    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
    015    package org.apache.tapestry5.services.assets;
    016
    017    import org.apache.tapestry5.ioc.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     */
    026    public 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    }