how to enable RMI class loading

[avogt_sundn]

Let me try to make that question short:
I get

Caused by: java.lang.ClassNotFoundException: No ClassLoaders found for: palmyra.baustein.geschaeftsverwaltung.antrag.ProtokollVBeanEjb (no security manager: RMI class loader disabled)

WAIT, I resolved that by enabling security policy that allows for RMI class loading.

Now I still get java.lang.ClassNotFoundException, but without the RMI hint.

I'd like to actually use RMI class loading. From what I read, there is nothing more to to (in JBoss 4.2.2) but to go to deploy/ejb3.deployer/META-INF/jboss-service.xml and have:

<mbean code="org.jboss.remoting.transport.Connector"
 name="jboss.remoting:type=Connector,name=DefaultEjb3Connector,handler=ejb3">
 <depends>jboss.aop:service=AspectDeployer</depends>
 <attribute name="InvokerLocator">socket://${jboss.bind.address}:3873/</attribute>

changed to

<mbean code="org.jboss.remoting.transport.Connector"
 name="jboss.remoting:type=Connector,name=DefaultEjb3Connector,handler=ejb3">
 <depends>jboss.aop:service=AspectDeployer</depends>
 <attribute name="InvokerLocator">socket://${jboss.bind.address}:3873/?loaderport=4873</attribute>

I'd really like to achieve having ie. a standalone client application without my EJBs interfaces in the class path to successfully make a lookup on my ejb.

1) Is it supposed to work at all?
2) How is it configured?

[avogt_sundn]

Ok, i enabled trace logging (described here: http://www.jboss.com/index.html?module=bb&op=viewtopic&t=126382 ).

I'm using a standalone client application. The log says:

12:03:06,794 DEBUG [SocketWrapper] ServerSocketWrapper[Socket[addr=/127.0.0.1,port=1222,localport=4873].12a5dd1] closing
12:03:11,422 TRACE [JavaSerializationManager] Creating ObjectOutputStream
12:03:11,438 TRACE [JavaSerializationManager] Creating ObjectInputStreamWithClassLoader
12:03:11,453 DEBUG [ClientSocketWrapper] reset timeout: 320000
12:03:11,485 TRACE [JavaSerializationManager] Creating ObjectOutputStream
12:03:11,485 TRACE [JavaSerializationManager] Creating ObjectInputStreamWithClassLoader
12:03:11,500 DEBUG [ClientSocketWrapper] reset timeout: 320000
12:03:11,500 DEBUG [MarshallerLoaderHandler] MarshallerLoaderHandler received invocation with param of load_class and data type of
 null
12:03:14,221 TRACE [ClassUtil] trying to load class: palmyra.baustein.bestandsdaten.partner.PartnerSelektierenVBean from path: pal
myra/baustein/bestandsdaten/partner/PartnerSelektierenVBean.class
12:03:14,221 TRACE [ClassByteClassLoader] getResourceAsStream =>palmyra.baustein.bestandsdaten.partner.PartnerSelektierenVBean = n
ull
12:03:14,346 DEBUG [MarshallerLoaderHandler] MarshallerLoaderHandler received invocation with param of load_class and data type of
 null
12:03:14,940 TRACE [ClassUtil] trying to load class: palmyra.baustein.bestandsdaten.partner.PartnerSelektierenVBean from path: pal
myra/baustein/bestandsdaten/partner/PartnerSelektierenVBean.class
12:03:14,940 TRACE [ClassByteClassLoader] getResourceAsStream =>palmyra.baustein.bestandsdaten.partner.PartnerSelektierenVBean = n
ull
12:03:14,971 DEBUG [ServerThread] WorkerThread#0[127.0.0.1:1227] closing socketWrapper: ServerSocketWrapper[Socket[addr=/127.0.0.1
,port=1227,localport=3873].1be032b]
12:03:14,971 DEBUG [ServerSocketWrapper] wrote CLOSING
12:03:14,971 DEBUG [ServerThread] WorkerThread#1[127.0.0.1:1228] closing socketWrapper: ServerSocketWrapper[Socket[addr=/127.0.0.1
,port=1228,localport=4873].1c1fcf1]
12:03:14,987 DEBUG [SocketWrapper] ServerSocketWrapper[Socket[addr=/127.0.0.1,port=1227,localport=3873].1be032b] closing
12:03:14,987 DEBUG [ServerSocketWrapper] wrote CLOSING
12:03:15,018 DEBUG [SocketWrapper] ServerSocketWrapper[Socket[addr=/127.0.0.1,port=1228,localport=4873].1c1fcf1] closing
12:03:19,958 TRACE [MicroRemoteClientInvoker] org.jboss.remoting.transport.http.HTTPClientInvoker@13e6be6 disconnecting ...
12:03:19,958 TRACE [MicroRemoteClientInvoker] org.jboss.remoting.transport.http.HTTPClientInvoker@13e6be6 is not connected!

What it says is: the ClassByteClassLoader (in the jboss) cannot find the class. In the debugger I found in line

org.jboss.remoting.loading.ClassUtil.getClassBytes:190

the ClassByteClassLoader is virtually empty with only a reference to its parent class loader being some

org.jboss.mx.loading.UnifiedClassLoader3@182c132{ url=null ,addedOrder=2}

I have deployed the ejb3 in question in an ear file with this jboss-app.xml:

<!DOCTYPE jboss-app
 PUBLIC "-//JBoss//DTD J2EE Application 1.4//EN"
 "http://www.jboss.org/j2ee/dtd/jboss-app_4_2.dtd">
<jboss-app>
 <loader-repository>
 palmyra-bsp-bestandsdaten-1.0:loader=bsp-bestandsdaten-1.0.EAR
 <loader-repository-config>
 java2ParentDelegation=true
 </loader-repository-config>
 </loader-repository>
</jboss-app>

and I want to stay with separate loader repositories per ear file.

Is that the problem?

What I didn't understand is: which classes are server for remote class loading from the jboss? Do I have to make my ear file known to the server invoker?

[avogt_sundn]

Ok, that is the problem:

once i emptied the jboss-app.xml, the example works.

Please, somebody tell me, that it is somehow possible to have isolated loader repositories per ear and still allow for remote class loading...

[jzawlocki]

You should copy your business interfaces to the global class loader on top of your ear class loader. Let's say that you have

@Remote
MyInterfate{}

@Stateless
MyBean implements MyInterface{
}

So you should place MyBean in your ear, but MyInterface should be located outside ear, directly in your deploy directory.