    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
    015package 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 */
    021public 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}