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