74 lines
2.4 KiB
Java
74 lines
2.4 KiB
Java
/*
|
|
* 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.catalina.loader;
|
|
|
|
import org.apache.catalina.LifecycleException;
|
|
|
|
public class WebappClassLoader extends WebappClassLoaderBase {
|
|
|
|
public WebappClassLoader() {
|
|
super();
|
|
}
|
|
|
|
|
|
public WebappClassLoader(ClassLoader parent) {
|
|
super(parent);
|
|
}
|
|
|
|
|
|
/**
|
|
* Returns a copy of this class loader without any class file
|
|
* transformers. This is a tool often used by Java Persistence API
|
|
* providers to inspect entity classes in the absence of any
|
|
* instrumentation, something that can't be guaranteed within the
|
|
* context of a {@link java.lang.instrument.ClassFileTransformer}'s
|
|
* {@link java.lang.instrument.ClassFileTransformer#transform(ClassLoader,
|
|
* String, Class, java.security.ProtectionDomain, byte[]) transform} method.
|
|
* <p>
|
|
* The returned class loader's resource cache will have been cleared
|
|
* so that classes already instrumented will not be retained or
|
|
* returned.
|
|
*
|
|
* @return the transformer-free copy of this class loader.
|
|
*/
|
|
@Override
|
|
public WebappClassLoader copyWithoutTransformers() {
|
|
|
|
WebappClassLoader result = new WebappClassLoader(getParent());
|
|
|
|
super.copyStateWithoutTransformers(result);
|
|
|
|
try {
|
|
result.start();
|
|
} catch (LifecycleException e) {
|
|
throw new IllegalStateException(e);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
/**
|
|
* This class loader is not parallel capable so lock on the class loader
|
|
* rather than a per-class lock.
|
|
*/
|
|
@Override
|
|
protected Object getClassLoadingLock(String className) {
|
|
return this;
|
|
}
|
|
}
|