Re: changing the codebase attribute

Thank you for the hint in the right direction. After a quick review i
think thats it.

Greets

Dominik Appl

Gregg Wonderly schrieb:
> Dominik Appl wrote:
>> Hello!
>>
>> I am currently writing an extension for an application which will allow
>> the parallel computation of some scientific models on different hosts.
>> For this the Servers, on which the code will be executed, require always
>> up-to-date model code. The client (and model code provider) will be
>> changing from time to time. So my question is, if it is somehow possible
>> to change the codebase attribute at runtime.
>
> The RMIClassLoaderSPI provides for this capability, and the
> PreferredClassLoader is the mechanism that is most easily available for
> you to exploit.  What you can do, is create a new PreferredClassLoader
> instance in the client that indicates the source of the client classes
> associated with the work request, and then indicate the correct URL from
> which to download such code.  The assumption would be that there is some
> interface which wouldn't change that would allow you to access new
> instances of such data classes from your client using the new class
> loader.  If not, then reflection would probably be necessary to
> construct an instance of the data object.
>
> Maybe you can tell us more about what the variation on the model code is
> and whether there is an interface involved which doesn't change?
>
> Gregg Wonderly

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