/*

 * Licensed to the Apache Software Foundation (ASF) under one or more

 * contributor license agreements.  See the NOTICE file distributed with

 * this work for additional information regarding copyright ownership.

 * The ASF licenses this file to You under the Apache License, Version 2.0

 * (the "License"); you may not use this file except in compliance with

 * the License.  You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

package org.apache.tomcat;

import java.lang.instrument.ClassFileTransformer;

/**

 * Publicly accessible interface that may be implemented by an application

 * ClassLoader to indicate that it allows modifications of application code.

 */

public interface TransformingClassLoader {

    /**

     * Add a transformer to enhance class functionality.

     * Transformers will be invoke for new classes defined by this ClassLoader in

     * the order they were added.

     *

     * @param transformer a byte code transformer

     */

    void addTransformer(ClassFileTransformer transformer);

    /**

     * Remove a transformer.

     *

     * @param transformer the transformer to remove

     */

    void removeTransformer(ClassFileTransformer transformer);

}

native