org.apache.cxf.common.util.ProxyClassLoader 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.cxf.common.util;
import java.net.URL;
import java.util.HashSet;
import java.util.Set;
/**
* Utility class loader that can be used to create proxies in cases where
* the the client classes are not visible to the loader of the
* service class.
*/
public class ProxyClassLoader extends ClassLoader {
private final Class classes[];
private final Set loaders = new HashSet<>();
private boolean checkSystem;
public ProxyClassLoader(ClassLoader parent) {
super(parent);
classes = null;
}
public ProxyClassLoader(ClassLoader parent, Class[] cls) {
super(parent);
classes = cls;
}
public void addLoader(ClassLoader loader) {
if (loader == null) {
checkSystem = true;
} else {
loaders.add(loader);
}
}
public Class findClass(String name) throws ClassNotFoundException {
if (classes != null) {
for (Class c : classes) {
if (name.equals(c.getName())) {
return c;
}
}
}
for (ClassLoader loader : loaders) {
try {
return loader.loadClass(name);
} catch (ClassNotFoundException cnfe) {
// Try next
} catch (NoClassDefFoundError cnfe) {
// Try next
}
}
if (checkSystem) {
try {
return getSystemClassLoader().loadClass(name);
} catch (ClassNotFoundException cnfe) {
// Try next
} catch (NoClassDefFoundError cnfe) {
// Try next
}
}
throw new ClassNotFoundException(name);
}
public URL findResource(String name) {
for (ClassLoader loader : loaders) {
URL url = loader.getResource(name);
if (url != null) {
return url;
}
}
return null;
}
}