    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.internal.plastic;
    016
    017    /**
    018     * Externalizes the logic for defining which classes will be loaded (and possibly transformed) by the class loader, and
    019     * which will be loaded by the parent class loader.
    020     */
    021    public interface ClassLoaderDelegate
    022    {
    023        /**
    024         * Identifies which classes are to be loaded.
    025         *
    026         * @param className
    027         *            fully qualified class name
    028         * @return true if the class should be intercepted, false to let parent class loader load class
    029         */
    030        boolean shouldInterceptClassLoading(String className);
    031
    032        /**
    033         * Load the class, transforming it as necessary.
    034         *
    035         * @param className
    036         *            binary class name
    037         * @return loaded and (if not an inner class) transformed class
    038         * @throws ClassNotFoundException
    039         */
    040        Class<?> loadAndTransformClass(String className) throws ClassNotFoundException;
    041    }