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From "Shrey Banga" <banga.sh...@gmail.com>
Subject Re: Shifting from xmlbean to JAXB in PlanCreator
Date Mon, 28 Jul 2008 06:59:06 GMT
I have made all the changes to EAR PlanCreator needed to move to JAXB+DWR.
But for this to work I need the JAXB jar in PlanCreator. I've attached a
patch for the minor changes to the JAXB classes needed to make it work with
DWR. I'd like to know which approach to be used.

If approach 1 is to be used, the JAXB jar has to be published to the maven
repositories and a dependency has to be added to PlanCreator. Can someone
explain how to go about it?

Instad if we should directly go for the second approach, is there something
I can do to hasten the process?

On Thu, Jul 24, 2008 at 6:22 PM, Shrey Banga <banga.shrey@gmail.com> wrote:

> About shifting the PlanCreator to JAXB, I think there can be two
> approaches:
>
> 1. Have a dependency to the jaxb jar present with GEP within PlanCreator
> itself. This means whatever changes are needed will need to be done in GEP
> and the jar rebuilt and added to PlanCreator. This is a quick albeit dirty
> approach.
>
> 2. Take out the jaxb classes from GEP and include in Geronimo as say
> geronimo-jaxb-api_spec and use them in both GEP and PlanCreator. These
> classes will need to be compatible with multiple versions of the schema,
> something Sainath has been working on ("Multiple schema version support in
> GEP"). This approach would help reduce maintenance problems and assist in
> shifting the deployment system to JAXB as well.
>
>
> On Thu, Jul 24, 2008 at 5:55 PM, Shrey Banga <banga.shrey@gmail.com>
> wrote:
>
>> Hi David,
>>
>> I'm currently focusing on the PlanCreator since my internship ends on 31st
>> July and I already have a few thing on my To-do list :-|
>> I'll be happy to work on the deployment system once I get back to my
>> college, if that's ok.
>>
>> Thanks,
>>
>> On Wed, Jul 23, 2008 at 10:45 PM, David Jencks <david_jencks@yahoo.com>
>> wrote:
>>
>>>
>>> On Jul 23, 2008, at 4:24 AM, Shrey Banga wrote:
>>>
>>>     I had opened a JIRA (GERONIMO-4197<https://issues.apache.org/jira/browse/GERONIMO-4197>)
>>> which is intended to shift from using xmlbean classes to JAXB classes for
>>> making the task of PlanCreator easier by exposing the JAXB classes directly.
>>> I've been able to use this approach to maintain an object of the JAXB class
>>> 'Application' with javascript and use it to call a function through DWR that
>>> marshalls it into the deployment plan. Similarly, I'm able to unmarshal the
>>> plan if it is modified by the user and reflect those changes in the
>>> PlanCreator.
>>>     The reason to shift from xmlbean to JAXB in this case was the way
>>> JAXB classes are organized- by adding just a few lines to dwr.xml, I can
>>> expose all those classes and use them to maintain a copy of the Application
>>> object. The same would have been a lot more tedious to configure and
>>> maintain in xmlbean, considering each class provides more functions and
>>> factory classes than what is needed by DWR. Earlier, this was being done by
>>> creating wrapper classes to the xmlbean which were becoming unmanagable and
>>> would need heavy maintenance with changes in the schema. I did have to
>>> modify some JAXB classes to have setters where it had only getters that
>>> returned live Lists to make it work with the DWR BeanConverter.
>>>     So now this shift will help reduce a lot of bloated code from
>>> PlanCreator and improve maintainability. Since GEP already uses these
>>> classes we can shift the jar to geronimo and add a dependency in GEP and
>>> PlanCreator for the same.
>>> Opinions?
>>>
>>>
>>> I think this is great.  Do you have any interest in working on (or just
>>> helping with) rewriting the deployment system to use the jaxb classes?  That
>>> would be a lot more work than the plan creator and get much more into
>>> geronimo internals but would have similar benefits (IMO)
>>>
>>> thanks
>>> david jencks
>>>
>>>
>>>
>>> --
>>> Shrey Banga
>>> Bachelor of Technology, III year
>>> Department of Electrical Engineering
>>> Indian Institute of Technology Roorkee
>>>
>>>
>>>
>>
>>
>> --
>> Shrey Banga
>> Bachelor of Technology, III year
>> Department of Electrical Engineering
>> Indian Institute of Technology Roorkee
>>
>
>
>
> --
> Shrey Banga
> Bachelor of Technology, III year
> Department of Electrical Engineering
> Indian Institute of Technology Roorkee
>



-- 
Shrey Banga
Bachelor of Technology, III year
Department of Electrical Engineering
Indian Institute of Technology Roorkee

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