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package org.jvnet.hk2.internal;
import javassist.util.proxy.MethodFilter;
import javassist.util.proxy.ProxyFactory;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.security.AccessController;
import java.security.PrivilegedExceptionAction;
import java.util.List;
import java.util.Map;
import org.aopalliance.intercept.MethodInterceptor;
import org.glassfish.hk2.utilities.reflection.Logger;
/**
* @author jwells
*
*/
final class ConstructorActionImpl<T> implements ConstructorAction {
private final static MethodFilter METHOD_FILTER = new MethodFilter() {
@Override
public boolean isHandled(Method method) {
// We do not allow interception of finalize
if (method.getName().equals("finalize")) return false;
return true;
}
};
/**
*
*/
private final ClazzCreator<T> clazzCreator;
/**
*
*/
private final Map<Method, List<MethodInterceptor>> methodInterceptors;
/**
* @param methodInterceptors
* @param clazzCreator TODO
*/
ConstructorActionImpl(
ClazzCreator<T> clazzCreator, Map<Method, List<MethodInterceptor>> methodInterceptors) {
this.clazzCreator = clazzCreator;
this.methodInterceptors = methodInterceptors;
}
@Override
public Object makeMe(final Constructor<?> c, final Object[] args, final boolean neutralCCL)
throws Throwable {
final MethodInterceptorHandler methodInterceptor = new MethodInterceptorHandler(this.clazzCreator.locator, methodInterceptors);
final ProxyFactory proxyFactory = new ProxyFactory();
proxyFactory.setSuperclass(this.clazzCreator.implClass);
proxyFactory.setFilter(METHOD_FILTER);
return AccessController.doPrivileged(new PrivilegedExceptionAction<Object>() {
@Override
public Object run() throws Exception {
ClassLoader currentCCL = null;
if (neutralCCL) {
currentCCL = Thread.currentThread().getContextClassLoader();
}
try {
return proxyFactory.create(c.getParameterTypes(), args, methodInterceptor);
}
catch (InvocationTargetException ite) {
Throwable targetException = ite.getTargetException();
Logger.getLogger().debug(c.getDeclaringClass().getName(), c.getName(), targetException);
if (targetException instanceof Exception) {
throw (Exception) targetException;
}
throw new RuntimeException(targetException);
}
finally {
if (neutralCCL) {
Thread.currentThread().setContextClassLoader(currentCCL);
}
}
}
});
}
}