com.mycila.jmx.AopUtils Maven / Gradle / Ivy
/**
* Copyright (C) 2010 Mycila ([email protected])
*
* Licensed 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 com.mycila.jmx;
import java.lang.reflect.Proxy;
/**
* @author Mathieu Carbou ([email protected])
*/
final class AopUtils {
private AopUtils() {
}
/**
* Determine the target class of the given bean instance,
* which might be an AOP proxy.
* Returns the target class for an AOP proxy and the plain class else.
*
* @param candidate the instance to check (might be an AOP proxy)
* @return the target class (or the plain class of the given object as fallback)
*/
public static Class getTargetClass(Object candidate) {
for (SupportedProxy supportedProxy : SupportedProxy.values()) {
if (supportedProxy.isProxy(candidate)) {
Class c = supportedProxy.getTargetType(candidate);
if (c != null) return c;
}
}
return candidate.getClass();
}
private static enum SupportedProxy {
SPRING {
@Override
Class getTargetType(Object proxy) {
try {
for (Class itf : proxy.getClass().getInterfaces())
if ("org.springframework.aop.TargetClassAware".equals(itf.getName()))
return (Class) proxy.getClass().getMethod("getTargetClass").invoke(proxy);
} catch (Exception ignored) {
}
return null;
}
@Override
boolean isProxyClass(Class c) {
for (Class itf : c.getInterfaces())
if ("org.springframework.aop.SpringProxy".equals(itf.getName())
|| "org.springframework.aop.TargetClassAware".equals(itf.getName()))
return true;
return false;
}
},
CGLIB {
@Override
Class getTargetType(Object proxy) {
return proxy.getClass().getSuperclass();
}
@Override
boolean isProxyClass(Class c) {
if (c.getName().contains("$$"))
return true;
for (Class itf : c.getInterfaces())
if ("net.sf.cglib.proxy.Factory".equals(itf.getName()))
return true;
return false;
}
},
JDK {
@Override
Class getTargetType(Object proxy) {
return null;
}
@Override
boolean isProxyClass(Class c) {
return Proxy.isProxyClass(c);
}
};
boolean isProxy(Object o) {
return isProxyClass(o.getClass());
}
abstract boolean isProxyClass(Class c);
abstract Class getTargetType(Object proxy);
}
}