org.nakedobjects.plugins.headless.viewer.internal.CgLibProxy Maven / Gradle / Ivy
package org.nakedobjects.plugins.headless.viewer.internal;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import net.sf.cglib.proxy.Enhancer;
import net.sf.cglib.proxy.Factory;
import org.nakedobjects.bytecode.cglib.persistence.objectfactory.internal.CglibEnhanced;
import org.nakedobjects.plugins.headless.applib.ViewObject;
public class CgLibProxy {
private final DelegatingInvocationHandler handler;
public CgLibProxy(final DelegatingInvocationHandler handler) {
this.handler = handler;
}
@SuppressWarnings("unchecked")
public T proxy() {
final T toProxy = handler.getDelegate();
// handle if already proxied using cglib.
if (CglibEnhanced.class.isAssignableFrom(toProxy.getClass())) {
handler.setResolveObjectChangedEnabled(true);
Class enhancedClass = toProxy.getClass();
Class origSuperclass = toProxy.getClass().getSuperclass();
List interfaces = new ArrayList();
interfaces.addAll(Arrays.asList(enhancedClass.getInterfaces()));
interfaces.remove(Factory.class); // if there.
interfaces.add(ViewObject.class);
return (T) Enhancer.create(
origSuperclass,
interfaces.toArray(new Class[]{}),
new InvocationHandlerMethodInterceptor(handler));
}
final Class clazz = (Class) toProxy.getClass();
T proxy = null;
try {
final IProxyFactory proxyFactory =
clazz.isInterface()?
new JavaProxyFactory():
new CgLibClassProxyFactory();
proxy = proxyFactory.createProxy(clazz, handler);
} catch (final RuntimeExceptionWrapper e) {
throw (RuntimeException) e.getRuntimeException().fillInStackTrace();
}
return proxy;
}
}