org.apache.activemq.util.ClassLoadingAwareObjectInputStream Maven / Gradle / Ivy
/**
* 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.activemq.util;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectStreamClass;
import java.lang.reflect.Proxy;
import java.util.HashMap;
@SuppressWarnings("rawtypes")
public class ClassLoadingAwareObjectInputStream extends ObjectInputStream {
private static final ClassLoader FALLBACK_CLASS_LOADER =
ClassLoadingAwareObjectInputStream.class.getClassLoader();
/**
* Maps primitive type names to corresponding class objects.
*/
private static final HashMap primClasses = new HashMap(8, 1.0F);
private final ClassLoader inLoader;
public ClassLoadingAwareObjectInputStream(InputStream in) throws IOException {
super(in);
inLoader = in.getClass().getClassLoader();
}
protected Class resolveClass(ObjectStreamClass classDesc) throws IOException, ClassNotFoundException {
ClassLoader cl = Thread.currentThread().getContextClassLoader();
return load(classDesc.getName(), cl, inLoader);
}
protected Class resolveProxyClass(String[] interfaces) throws IOException, ClassNotFoundException {
ClassLoader cl = Thread.currentThread().getContextClassLoader();
Class[] cinterfaces = new Class[interfaces.length];
for (int i = 0; i < interfaces.length; i++) {
cinterfaces[i] = load(interfaces[i], cl);
}
try {
return Proxy.getProxyClass(cl, cinterfaces);
} catch (IllegalArgumentException e) {
try {
return Proxy.getProxyClass(inLoader, cinterfaces);
} catch (IllegalArgumentException e1) {
// ignore
}
try {
return Proxy.getProxyClass(FALLBACK_CLASS_LOADER, cinterfaces);
} catch (IllegalArgumentException e2) {
// ignore
}
throw new ClassNotFoundException(null, e);
}
}
private Class load(String className, ClassLoader... cl) throws ClassNotFoundException {
for (ClassLoader loader : cl) {
try {
return Class.forName(className, false, loader);
} catch (ClassNotFoundException e) {
// ignore
}
}
// fallback
final Class clazz = (Class) primClasses.get(className);
if (clazz != null) {
return clazz;
} else {
return Class.forName(className, false, FALLBACK_CLASS_LOADER);
}
}
static {
primClasses.put("boolean", boolean.class);
primClasses.put("byte", byte.class);
primClasses.put("char", char.class);
primClasses.put("short", short.class);
primClasses.put("int", int.class);
primClasses.put("long", long.class);
primClasses.put("float", float.class);
primClasses.put("double", double.class);
primClasses.put("void", void.class);
}
}