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From "Tim McConnell (JIRA)" <>
Subject [jira] Commented: (GERONIMODEVTOOLS-643) Refactor GEP 3.0 code to decouple various server adapters
Date Thu, 29 Apr 2010 02:40:50 GMT


Tim McConnell commented on GERONIMODEVTOOLS-643:

Hi Delos, I like this idea. I've incorporated some changes into trunk to decouple the V30
plugins from the st.ui and st.core plugins just to ease the integration of the new OSGi functionality,
which will cause a lot of the existing code to change. This way, it will only have to be changed
in 1 plugin instead of multiple plugins. Also, I wonder if it might be possible to further
isolate all the JAXB code into any new JAXB plugins themselves ?? That way, if there is a
new JAXB plugin for V30, all the models and JAXB utilities could be included in just that
plugin, and not spread across mutliple plugins like it is now....

> Refactor GEP 3.0 code to decouple various server adapters
> ---------------------------------------------------------
>                 Key: GERONIMODEVTOOLS-643
>                 URL:
>             Project: Geronimo-Devtools
>          Issue Type: Improvement
>          Components: eclipse-plugin
>    Affects Versions: 3.0
>            Reporter: Delos Dai
>            Assignee: Delos Dai
>             Fix For: 3.0
> GEP 3.0 will contain server adapters of all versions, including v1.1,v2.0,v2.1,v2.2,v3.0.
It makes current GEP code much complicated. 
> IMO, we have following guideline of GEP structure design
> 1) "" and """ has common functions
used by various adapters. These two plug-ins shouln't depend on any version specific adapter
plug-in, such as "org.apache.geronimo.runtime.vXX","" and ""

> 2) "org.apache.geronimo.j2ee.v11.jaxbmodel" is dedicated to v11 adapter, while "org.apache.geronimo.jee.v21.jaxbmodel"
is for v20,v21,v22 adapter. So far, no jaxb model updated for v30, so v30 adapter still depends
on  "org.apache.geronimo.jee.v21.jaxbmodel"
> 3 )Since v20,v21 and v22 adapters all depends on v21  jaxb model , they shared operations
on the model. Currently, we put all their shared  operations in ""
and """. Both plug-ins of v20 and v21 adapters depend on them.
> 4) For v11 adapter, it's the only  adapter for JEE 4 and it depends on v11 jaxb model.
Except common functions in "", it doesn't have much in common with
other adapter. 
> 5) For v30 adapter, it's the only adapter for JavaEE 6. Currently, since it still uses
v21 jaxb model, it needs operations on the model. As a result, V30 plug-in still depends on
"" and """. In future, once updated
jaxb model for v30 is added, we will remove v21.core and v21.ui from its dependency list.
> Unfortunately, current GEP code doesn't strictly obey the guideline above. So I did some
refactoring work for GEP 3.0 code. I won't commit the change until we get an agreement on
> I hope all of us are able to have the same undertstanding on GEP structure. It will avoid
potential confusion in future.  
> Thanks!

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