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From Tim McConnell <tim.mcco...@gmail.com>
Subject Re: Multiple schema version support in GEP
Date Thu, 24 Jul 2008 01:19:34 GMT
Hi Sainath, I agree with Ted as well. Your ideas seem sound but I don't think we 
should attempt this in GEP trunk, which will soon be released in conjunction with 
the 2.1.2 Geronimo server. As an alternative, could you possibly work on this in 
the devtools sandbox ??

Sainath Chowdary wrote:
> I think that current architecture of GEP is too rigid in a way which 
> produces very redundant code if we extend it for future versions of 
> Geronimo. Also it is not compliant with multiple version of schemas.The 
> UI elements are also somewhat implemented in a hacky way where v20 UI 
> depends on v21 UI which should be the opposite. We need to introduce 
> proper hierarchy levels according to schema/server versions in GEP MVC 
> at this level before GEP becomes overly complicated.
> 
> For this I propose we change the architecture of our JAXB model to 
> provide support for multiple versions of schemas. With the help of 
> slight customizations we can easily make JAXB model tailored for our 
> purpose. The main task would be to create a common pool of classes 
> between the versions and initializing the JAXB context properly. 
> Assuming we support both v2.0 and v2.1 which respectively have 
> geronimo-web-2.0.xsd & geronimo-web-2.0.1.xsd, we will create a 
> Interface that will be implemented by both WebAppTypes so that in commn 
> UI section we can directly cast to the interface and in version specific 
> UI we can cast it to the particular version we are working in.
> 
> After that we may need to refactor the code in ui plugins to utilize the 
> new hierarchy levels and extra functionality added. Current architecture 
> will easily achieve its bottleneck if the schema changes frequently. I 
> find it this is the ideal time to reorganize the whole of GEP.
> Any comments?
> 
> -- 
> Thanks,
> Sainath Chowdary
> B.Tech III yr, Spring Semester
> Electronics & Communication Engg
> Indian Institute of Technology Roorkee

-- 
Thanks,
Tim McConnell

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