75 lines
2.6 KiB
Java
75 lines
2.6 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.catalina.loader;
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import org.apache.catalina.LifecycleException;
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import org.apache.juli.logging.Log;
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import org.apache.juli.logging.LogFactory;
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public class ParallelWebappClassLoader extends WebappClassLoaderBase {
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private static final Log log = LogFactory.getLog(ParallelWebappClassLoader.class);
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static {
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boolean result = ClassLoader.registerAsParallelCapable();
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if (!result) {
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log.warn(sm.getString("webappClassLoaderParallel.registrationFailed"));
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}
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}
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public ParallelWebappClassLoader() {
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super();
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}
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public ParallelWebappClassLoader(ClassLoader parent) {
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super(parent);
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}
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/**
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* Returns a copy of this class loader without any class file
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* transformers. This is a tool often used by Java Persistence API
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* providers to inspect entity classes in the absence of any
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* instrumentation, something that can't be guaranteed within the
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* context of a {@link java.lang.instrument.ClassFileTransformer}'s
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* {@link java.lang.instrument.ClassFileTransformer#transform(ClassLoader,
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* String, Class, java.security.ProtectionDomain, byte[]) transform} method.
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* <p>
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* The returned class loader's resource cache will have been cleared
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* so that classes already instrumented will not be retained or
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* returned.
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*
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* @return the transformer-free copy of this class loader.
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*/
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@Override
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public ParallelWebappClassLoader copyWithoutTransformers() {
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ParallelWebappClassLoader result = new ParallelWebappClassLoader(getParent());
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super.copyStateWithoutTransformers(result);
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try {
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result.start();
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} catch (LifecycleException e) {
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throw new IllegalStateException(e);
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}
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return result;
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}
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}
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