[Pgi-wg] OGF PGI Software Engineering Use Case Template

[Mark Morgan]

Having already put the effort into writing up the Genesis II use cases  
in the OGSA Use case template format, I'm not thrilled with the  
prospect of doing so again in a different format.  I know that the use  
case template went out not too long before the use cases were supposed  
to be due, but if we are going to have this type of discussion about  
things every time, then we need to take more time deciding and voting  
on things like templates ahead of time and not rush the process.

-Mark

On Jul 12, 2010, at 11:49 AM, Etienne URBAH wrote:

> Johannes, Morris and all,
>
>
> Short summary
> -------------
> The OGSA-based 'PGI Use Case Template' is trash.  Forget it.
>
> I propose a 'PGI Software Engineering Use Case Template' (based on  
> Wikipedia work) at http://forge.gridforum.org/sf/go/doc16024?nav=1
>
> Are you ready to invest your work into professional Software  
> Engineering ?
>
>
> Detailed argumentation
> ----------------------
> As promised, I have studied the 'PGI Use Case Template' based on the  
> OGSA template.
>
>
> Regrettably, this OGSA-based template :
>
> -  puts the focus on 'Customers', which are very specific roles, and  
> and more useful in 'for-profit business' than in 'scientific data  
> processing',
>
> -  puts the focus on 'Scenarios', which is a plural, whereas best  
> practice is to describe in detail only the primary scenario,
>
> -  puts the focus on 'Applications', whereas for Service Grids, an  
> Application is just one of the several files given as input to an  
> Activity,
>
> -  puts the focus on 'Involved resources', which are internal to the  
> system, and MUST STAY HIDDEN following the very basic OO principle  
> of ENCAPSULATION,
>
> -  forgets to request the definition of the SYSTEM and the  
> description of its BOUNDARIES, whereas such definition and  
> description is a core issue for Distributed Data Processing,
>
> -  forgets to request the definition of preconditions (apart  
> security, which is mentioned only after the scenario(s) which uses  
> the security context).
>
> So, this template is perhaps suited for dissemination and for  
> submission of 'papers', but NOT AT ALL for professional Software  
> Engineering.
>
> This is perhaps one of the causes of the very moderate success of  
> OGSA.
>
> Therefore, writing comments inside this OGSA-based template in the  
> hope of improving it would be a complete waste of time.
>
>
> Instead, I have used http://en.wikipedia.org/wiki/Use_case as basis  
> to write my own proposal, which I call 'PGI Software Engineering Use  
> Case Template', and is available at http://forge.gridforum.org/sf/go/doc16024?nav=1
>
> The goal of this template is professional Software Engineering,  
> permitting technical understanding, technical criticism and  
> technical improvement.
> Therefore, the focus is NOT AT ALL on the scientific applications,  
> but on the precise definition of :
> - The boundaries of the system for which the 'Use Case' captures one  
> behavior,
> - The list of actors, stakeholders, participants, roles,
> - The detailed description of the primary scenario of interactions  
> between the actors and the system.
>
> The Use Cases which I already published as simple text already  
> contain most of the information required by this professional  
> Software Engineering template.  I will easily reformat them  
> accordingly.
>
>
> This 'PGI Software Engineering Use Case template' is to be  
> improved.  Do not hesitate to provide comments and suggestions.
>
>
> Best regards.
>
> -----------------------------------------------------
> Etienne URBAH         LAL, Univ Paris-Sud, IN2P3/CNRS
>                      Bat 200   91898 ORSAY    France
> Tel: +33 1 64 46 84 87      Skype: etienne.urbah
> Mob: +33 6 22 30 53 27      mailto:urbah at lal.in2p3.fr
> -----------------------------------------------------
>
>
> On Thu, 08/07/2010 19:45, Etienne URBAH wrote:
>> OGF PGI telephone conference on 2010-07-08
>> ------------------------------------------
>>
>> ...
>>
>> Everyone can add comments to the template for Use Cases
>> http://forge.gridforum.org/sf/go/doc16013?nav=1
>> - Etienne will add some comments
>>
>> Following people should upload their Use Cases following the  
>> template to
>> GridForge
>> http://forge.gridforum.org/sf/docman/do/listDocuments/projects.pgi-wg/docman.root.input_documents.use_cases
>> :
>> - Emmanouil for Globus
>> - Luigi for gLite
>> - Morris for Unicore
>>
>> Following people should convert their Use Cases according to the
>> provided template :
>> - Etienne for EDGI
>> - Aleksandr for ARC
>>
>> Next OGF PGI telephone conference on Thursday 2010-07-15 at 15h30 CET
>
> _______________________________________________
> Pgi-wg mailing list
> Pgi-wg at ogf.org
> http://www.ogf.org/mailman/listinfo/pgi-wg

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