    001    // Copyright 2010, 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    /**
    018     * Encapsulates the logic or creating the path portion of an asset URL, including
    019     * the application version.
    020     *
    021     * @since 5.2.0
    022     */
    023    public interface AssetPathConstructor
    024    {
    025        /**
    026         * Constructs an asset URL path from the virtual folder and path (within the virtual folder).
    027         *
    028         * @param virtualFolder
    029         *            corresponds to a {@link AssetRequestHandler} contributed to the AssetDispatcher service
    030         * @param path
    031         *            within the virtual folder (should <em>not</em> start with a slash)
    032         * @return path portion of asset URL, including the context path, the /assets/ virtual folder, the application
    033         *         version number,
    034         *         the virtual folder, and the path extension
    035         */
    036        String constructAssetPath(String virtualFolder, String path);
    037    }