org.glassfish.pfl.basic.proxy.DelegateInvocationHandlerImpl Maven / Gradle / Ivy
/*
* Copyright (c) 1997, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0, which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package org.glassfish.pfl.basic.proxy ;
import java.lang.reflect.Method ;
import java.lang.reflect.InvocationHandler ;
import java.lang.reflect.InvocationTargetException ;
public abstract class DelegateInvocationHandlerImpl
{
private DelegateInvocationHandlerImpl() {}
public static InvocationHandler create( final Object delegate )
{
SecurityManager s = System.getSecurityManager();
if (s != null) {
s.checkPermission(new DynamicAccessPermission("access"));
}
return new InvocationHandler() {
@Override
public Object invoke( Object proxy, Method method, Object[] args )
throws Throwable
{
// This throws an IllegalArgument exception if the delegate
// is not assignable from method.getDeclaring class.
try {
return method.invoke( delegate, args ) ;
} catch (InvocationTargetException ite) {
// Propagate the underlying exception as the
// result of the invocation
throw ite.getCause() ;
}
}
} ;
}
}