001// Copyright 2008 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.ioc.services;
016
017import java.net.URL;
018
019/**
020 * Used by {@link org.apache.tapestry5.ioc.services.ClassNameLocator} to convert URLs from one protocol to another. This
021 * is a hook for supporting OSGi, allowing "bundleresource" and "bundleentry" protocols to be converted to "jar:" or
022 * "file:".
023 */
024public interface ClasspathURLConverter
025{
026    /**
027     * Passed a URL provided by {@link ClassLoader#getResources(String)} to check to see if can be converted.
028     *
029     * @param url to check
030     * @return the url, or an equivalent url of type jar: or file:
031     */
032    URL convert(URL url);
033}