nl.vpro.util.LeaveDefaultsProxyHandler Maven / Gradle / Ivy
package nl.vpro.util;
import java.lang.invoke.MethodHandles;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
/**
* Support for java 8 'default' methods. Resteasy won't honour them. Wrapping around this proxy reinstalls them.
*
* @author Michiel Meeuwissen
* @since 1.8
*/
public class LeaveDefaultsProxyHandler implements InvocationHandler {
private final Object delegate;
public LeaveDefaultsProxyHandler(Object delegate) {
this.delegate = delegate;
}
@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
if (method.isDefault()) {
final Class declaringClass = method.getDeclaringClass();
return MethodHandles.lookup().in(declaringClass)
.unreflectSpecial(method, declaringClass)
.bindTo(proxy)
.invokeWithArguments(args);
} else {
return method.invoke(delegate, args);
}
}
}