Interesting. I imagine that your tests work because you're using
groovy and not trying to access the class that you've transformed as
it's actual type.
@Test
public void monitor() {
String rootPackage = "org.apache.tapestry5.monitor.test";
DefaultMonitorNameGenerator nameGenerator = new
DefaultMonitorNameGenerator(rootPackage);
MonitoredProxyFactoryImpl monitoredProxyFactory = new
MonitoredProxyFactoryImpl(nameGenerator, rootPackage);
// The following results in
// java.lang.ClassCastException:
org.apache.tapestry5.monitor.test.FakeService cannot be cast to
org.apache.tapestry5.monitor.test.FakeService
FakeService monitor = monitoredProxyFactory.monitor(FakeService.class);
monitor.publicMethod();
}
Is what I'm trying to do feasible without replacing the context ClassLoader?
On Fri, Jul 29, 2011 at 3:08 PM, Taha Hafeez <tawus.tapes...@gmail.com> wrote:
> Hi Josh
>
> This might help
>
> http://tawus.wordpress.com/category/plastic/
>
> regards
> Taha
>
> On Fri, Jul 29, 2011 at 11:25 PM, Howard Lewis Ship <hls...@gmail.com> wrote:
>> On Fri, Jul 29, 2011 at 10:19 AM, Josh Canfield <joshcanfi...@gmail.com>
>> wrote:
>>> I'd like to integrate some advice used in a tapestry web project into
>>> a non-tapestry web project. I can add a dependency on plastic, but not
>>> a tapestry-ioc.
>>>
>>> I'm at the experimental stage at this point and I've hit a snag. I
>>> figure I can wade around for a couple hours, or Howard can whip up in
>>> example off the top of his head.
>>>
>>> Here's some pieces of code.
>>>
>>> plasticManager = PlasticManager
>>> .withContextClassLoader()
>>> .packages(Collections.singleton(basePackage))
>>> .create();
>>>
>>>
>>> public <T> T monitor(Class<T> monitoredClass, Object... constructorParams) {
>>>
>>> return plasticManager.createClass(monitoredClass, new
>>> PlasticClassTransformer() {
>>>
>>> public void transform(PlasticClass plasticClass) {
>>>
>>> // At this point plasticclass has methodNames, but no methods so the
>>> following fails to find my annotation.
>>> // Do I need to manually override the methods?
>>>
>>> List<PlasticMethod> methods =
>>> plasticClass.getMethodsWithAnnotation(Monitor.class);
>>> for (PlasticMethod method : methods) {
>>> final Stopwatch stopwatch =
>>> createStopwatch(method.getAnnotation(Monitor.class), method);
>>> logger.debug("Adding advice for {}",
>>> stopwatch.getName());
>>> method.addAdvice(new MonitorAdvice(stopwatch));
>>> }
>>> }
>>>
>>> }).newInstance();
>>> }
>>>
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>>>
>>>
>>
>> I think what you are missing is that you don't create a class (that's
>> for creating proxies and such, the monitoredClass you pass in becomes
>> the base class).
>>
>> What you want to do is wrap your logic up your PlasticClassTransformer
>> inside a StandardDelegate (a trivial internal class).
>>
>> You can then ask the manager to getClassInstantiator() and
>> newInstance() that to get your advised and instantiated instance.
>>
>>
>> --
>> Howard M. Lewis Ship
>>
>> Creator of Apache Tapestry
>>
>> The source for Tapestry training, mentoring and support. Contact me to
>> learn how I can get you up and productive in Tapestry fast!
>>
>> (971) 678-5210
>> http://howardlewisship.com
>>
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>>
>>
>
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