RE: a question about rmi sample

A great help would be if you added a failing test-case to the
RemoteCallServerTest. Feel free to modify any other part of the tests.
Just send me the files you changed and I will try to implement it if I
get time.

> -----Original Message-----
> From: [email protected] [mailto:nanning-
> [email protected]] On Behalf Of yiming wang
> Sent: den 5 juni 2003 09:22
> To: [email protected]
> Subject: Re: [Nanning-developer] a question about rmi sample
> 
> hi jon,
> 
> Every thing is ok now!
> i can use "MyObject" in client side, any operation on
> that object will be result at server side.
> 
> more step, i meet another problem:
> 
> In MyStatelessService.java, add following codes
> public Collection getAllObjects();
> 
> then in MyStatelessServiceImpl.java
> public Collection getAllObjects() {
> 		return
> ((MySystem)CurrentPrevayler.getSystem()).getAllObjects();
> 	}
> 
> test code:
> Collection col = myService.getAllObjects();
> for (Iterator it = col.iterator(); it.hasNext();) {
>     MyObject o2 = (MyObject)it.next();
>     String v2 = o2.getValue();
>     System.out.println("value: " + v2);
> }
> 
> run test case with "java -ea", but throws following
> exception:
> java.lang.ClassCastException
> 	at
>
com.tirsen.nanning.samples.rmi.RemoteAspect.invoke(RemoteAspect.java:21)
> 	at
>
com.tirsen.nanning.MixinInstance$InvocationImpl.invokeNext(MixinInstance
.j
> ava:96)
> 	at
> com.tirsen.nanning.MixinInstance.invokeMethod(MixinInstance.java:164)
> 	at
> com.tirsen.nanning.AspectInstance.invoke(AspectInstance.java:96)
> 	at $Proxy2.getValue(Unknown Source)
> 	at
>
com.tirsen.nanning.samples.rmi.RemoteCallServerTest.testStatelessRemoteC
al
> l(RemoteCallServerTest.java:90)
> ....
> 
> MyObject has been already add @remote tag, but when
> they in a Collection, they can't be marshal as remote
> stub, is it current restrict? any solution to resolve
> such requirement?
> 
> thanks again!
> 
> --- Jon Tirsén <[email protected]> wrote:
> > Ni hao!
> >
> > Try to make sure that the attributes really are
> > loaded, for example do:
> > assertTrue(Attributes.hasAttribute(MyObject.class,
> > "remote"));
> >
> > Also try to execute java with asserts enabled, ie:
> > "java -ea". You may get a different more helpful
> > error-message.
> >
> > If this doesn't help you either I need to look
> > deeper
> > into the problem. I can to that later this weekend.
> >
> >  --- yiming wang <[email protected]> skrev: >
> > &#21776;&#26480;&#65306;
> > >     &#20320;&#22909;&#65281;
> > >     Firstly, i wish your speach on Nanning will
> > get
> > > successful.
> > >
> > >     I am sure the attributes are correct, because
> > > the
> > > other test cases can pass with no problem.
> > >
> > >     As your said:
> > >     "Basically the framework doesn't know that it
> > > should
> > >     marshal this object as a client stub and
> > > therefor
> > >     the object is incorrect on the client side."
> > >
> > >     I guess that it is usage of aspect instance in
> >
> > > client side, may be not a bug. so, how to declare
> > > "MyObject.java" then it can be marshal as a client
> > > stub?
> > >
> > >     i have been add @remote and @service tag to
> > > "MyObject.java", but not work.
> > >
> > > &#29579;&#20134;&#26126;
> > > 2003.6.3
> > >
> > > --- Jon Tirsén <[email protected]> wrote:
> > > > I am currently in London and using an internet
> > > cafe
> > > > to
> > > > answer. Therefor I don't have access to the code
> > > and
> > > > can't verify this. But...
> > > >
> > > > I think you haven't compiled the attributes or
> > > > haven't
> > > > included them in the classpath or haven't added
> > it
> > > > to
> > > > the search-path with Attributes.addSearchPath.
> > > > Basically the framework doesn't know that it
> > > should
> > > > marshal this object as a client stub and
> > therefor
> > > > the
> > > > object is incorrect on the client side.
> > > >
> > > > If the error persists please answer back and I
> > > will
> > > > try to have a closer look at this when I get
> > back
> > > > from
> > > > London.
> > > >
> > > > Btw, if any of you guys are in London tomorrow
> > > > evening
> > > > come by XTC. I will be there and might give an
> > > > improvised speach on Nanning. See
> > > > www.xpdeveloper.com
> > > >
> > > > Tip: If you execute Nanning with assertions
> > > enabled
> > > > (using java -ea) better error-messages will
> > > appear.
> > > >
> > > > tang jie
> > > >
> > > >  --- yiming wang <[email protected]> skrev: > hi
> > > jon,
> > > > >
> > > > > In MyStatelessService.java, add following
> > codes:
> > > > >
> > > > > 	public MyObject getMyObject();
> > > > >
> > > > > then, in MyStatelessServiceImpl.java:
> > > > >
> > > > > 	public MyObject getMyObject() {
> > > > >     	    return
> > > > >
> > > >
> > >
> >
> ((MySystem)CurrentPrevayler.getSystem()).getMyObject();
> > > > >         }
> > > > >
> > > > > finally, in RemoteCallServerTest.java, add
> > > > following
> > > > > test codes:
> > > > >
> > > > > 	MyObject myObject = myService.getMyObject();
> > > > >         String value = myObject.getValue();
> > > > >
> > > > > when i run the test case, throws the following
> > > > > exception:
> > > > >
> > > > > java.lang.ClassCastException
> > > > > 	at
> > > > >
> > > >
> > >
> >
>
com.tirsen.nanning.samples.rmi.RemoteAspect.invoke(RemoteAspect.java:21)
> > > > > 	at
> > > > >
> > > >
> > >
> >
>
com.tirsen.nanning.MixinInstance$InvocationImpl.invokeNext(MixinInstance
.j
> ava:96)
> > > > > 	at
> > > > >
> > > >
> > >
> >
> com.tirsen.nanning.MixinInstance.invokeMethod(MixinInstance.java:164)
> > > > > 	at
> > > > >
> > > >
> > >
> >
> com.tirsen.nanning.AspectInstance.invoke(AspectInstance.java:96)
> > > > > 	at $Proxy2.getValue(Unknown Source)
> > > > > 	at
> > > > >
> > > >
> > >
> >
>
com.tirsen.nanning.samples.rmi.RemoteCallServerTest.testStatelessRemoteC
al
> l(RemoteCallServerTest.java:77)
> > > > > 	at
> > > > >
> > > >
> > >
> > sun.reflect.NativeMethodAccessorImpl.invoke0(Native
> > > > > Method)
> > > > > 	at
> > > > >
> > > >
> > >
> >
>
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.jav
a:
> 39)
> > > > > 	at
> > > > >
> > > >
> > >
> >
>
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor
Im
> pl.java:25)
> > > > > 	at
> > > > java.lang.reflect.Method.invoke(Method.java:324)
> > > > > 	at
> > > > >
> > > >
> > >
> > junit.framework.TestCase.runTest(TestCase.java:154)
> > > > > 	at
> > > > >
> > > >
> > >
> > junit.framework.TestCase.runBare(TestCase.java:127)
> > > > > 	at
> > > > >
> > > >
> > >
> >
> junit.framework.TestResult$1.protect(TestResult.java:106)
> > > > > 	at
> > > > >
> > > >
> > >
> >
> junit.framework.TestResult.runProtected(TestResult.java:124)
> > > > > 	at
> > > > >
> > > >
> > >
> > junit.framework.TestResult.run(TestResult.java:109)
> > > > > 	at
> > > > junit.framework.TestCase.run(TestCase.java:118)
> > > > > 	at
> > > > >
> > > >
> > >
> >
> junit.framework.TestSuite.runTest(TestSuite.java:208)
> > > > > 	at
> > > > >
> > > junit.framework.TestSuite.run(TestSuite.java:203)
> > > > > ......
> > > > >
> > > > > how to resolve such problem?
> > > > >
> > > > > i have two scenarios:
> > > > > 1. at client, i only use MyObject to get Data,
> > > not
> >
> === message truncated ===
> 
> 
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