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Re: DeviceDescriptionStructuresUseCases Use cases

From: José Manuel Cantera Fonseca <jmcf@tid.es>
Date: Mon, 02 Apr 2007 16:22:05 +0200
To: Andrea Trasatti <andrea@trasatti.it>
Cc: public-ddwg@w3.org
Message-id: <4611118D.2070505@tid.es>


Your suggestions are now in the Wiki [1]. I think we need to refine the 
content, but as an starting point is not bad.

Comments from the rest of the group are welcome

Best regards

[1] http://www.w3.org/2005/MWI/DDWG/wiki/DeviceDescriptionStructuresUseCases

Andrea Trasatti escribió:
> I suggest to change the title of the use-case. Current title is 
> "Special content adaptation for a family of devices", I would suggest 
> to change it into: "Mobile web content adaptation for a family of 
> devices".
> Then I'd like to create a new use-case as follows.
> Title:"Application develompent for a family of devices"
> Content:"When developing an application for example with J2ME or 
> Symbian, it is often useful to create different builds for different 
> devices or use different API's to exploit the device capabilities, 
> namely 3D hardware acceleration, stereo speakers, bluetooth chips, GPS 
> support and more. In order to do this, developers might have to create 
> 1 build for each device on the market. Many devices actually share the 
> same functionalities and support the same API's. Developing and 
> testing on a device often means supporting a range of devices. 
> Companies in this space will get great advantage from the ability to 
> build a family of devices that matches similar specifications."
> Also, as a followup and reviewing the text of the use-case 1, I would 
> also suggest to remove the ending part, which is: "Four months later, 
> Mike needs to develop a new application and suffers the same problem 
> as John. As Mike is a careful developer, and doesn't like reinventing 
> the wheel, instead of creating a new device family, he queries the 
> DDR, and realizes that there is a device family that suits his needs. 
> So he reuse that family of devices and references it in his own 
> application."
> And I suggest we create 2 new use-cases to demonstrate how the 
> exchange of family definitions can be used.
> New use-case a:
> title: "Common definition of device family for mobile web content 
> adaptation"
> Text: "Company A wants to develop a new application and would like to 
> provide different layout and content to different groups of devices. 
> As company A  doesn't like reinventing the wheel, instead of creating 
> a new device family, queries the DDR, and realizes that there is a 
> device family that suits its needs as defined by company B who is 
> working in the same space. Company A can consistently reuse that 
> family of devices and references it in his own application.
> New use-case b, again not in the space of the MWI DDWG, but more 
> generally interesting for companies in the mobile space:
> title: "Common definition and sharing of device family for content 
> provisioning"
> Text: "Company A is a developer of J2ME applications. Every month its 
> QA team tests the new games against the devices they have in their 
> lab. Devices used to testing are often considered master devices 
> representing a number of other devices that will not be tested 
> directly. Also, every month, the company lab buys new devices, old 
> games are tested against these devices for compatibility.
> Company B is a content aggregator. Every month receives from different 
> software developers a number of new games. Company B also keeps 
> updates their device database so every month new devices are added.
> Every month Company A sends to Company B a list of the games and a 
> list of the devices compatible with wach of the games provided.
> Company B needs to go back and check the list of devices and games 
> every month for each of the games developers.
> The ability of using a common API between Company B and each of its 
> affiliate games developers would ease the work on a daily basis and 
> make sure that all the devices that are certified to work with a 
> certain game are up-to-date".
> - Andrea
> Il giorno 28/mar/07, alle ore 16:53, José Manuel Cantera Fonseca ha 
> scritto:
>> Hi,
>> Trying to summarize, what is your current proposal? To extend use 
>> case 2?
>> Cheers
>> Andrea Trasatti escribió:
>>> If that is the case, then I think that this should be extended to 
>>> the existing use-case 2 which is more of a "marketing" grouping of 
>>> devices rather than for the mobile web.
>>> Since the group is not going to actually define any families, but 
>>> simply defining the API's by which an "extended-DDR" can manage 
>>> device grouping, I don't see the need to say which use-cases are out 
>>> of scope. As long as the DDR supports the basic API's and the 
>>> "extended-DDR" supported the extra API's we will define, I don't see 
>>> any borders to the groupings that different individuals might create.
>>> I also apologies for an e-mail I sent out that was apparently 
>>> encrypted with GPG. All I wanted to provide was a link to the page 
>>> of the use cases, which I'll send now, 
>>> http://www.w3.org/2005/MWI/DDWG/wiki/DeviceDescriptionStructuresUseCases 
>>> - Andrea
>>> Il giorno 28/mar/07, alle ore 13:48, Rotan Hanrahan ha scritto:
>>>> While we are focussed in DDWG on the production of content for the 
>>>> Web,
>>>> we have considered the potential need in other domains and we aim 
>>>> to be
>>>> extensible to support other use cases. I would have no objection to
>>>> information on the periphery of the scope of DDWG being included in 
>>>> the
>>>> DDWG wiki, so long as we make it clear (i.e. on the page itself) that
>>>> this is a topic beyond our primary focus.
>>>> Such information may be of use to the wider community, and perhaps it
>>>> may encourage them to contribute to our core activity, which is
>>>> primarily concerned with supporting content adaptation through the
>>>> provision of device descriptions.
>>>> ---Rotan.
>>>> -----Original Message-----
>>>> From: public-ddwg-request@w3.org 
>>>> [mailto:public-ddwg-request@w3.org] On
>>>> Behalf Of Andrea Trasatti
>>>> Sent: 28 March 2007 12:41
>>>> To: public-ddwg@w3.org
>>>> Subject: DeviceDescriptionStructuresUseCases Use cases
>>>> I was about to create a new use-case, but I think that this actually
>>>> partially matches the already existing use-case 1.
>>>> I am proposing a change in the text and creation of 2 use-cases OR
>>>> the integration.
>>>> The current use-case is focused on content adaptation for the mobile
>>>> web and WAP. I was thinking of the ability to group devices according
>>>> to other characteristics for example for game and application
>>>> developers. Companies could be interested in grouping devices
>>>> according to the supported JSR's or some hardware characteristics
>>>> such as bluetooth, GPS, A-GPS, camera (did you see mobilized?) and so
>>>> on.
>>>> It is very similar to use-case one, the use of the grouping is again
>>>> to produce a content that is suitable for a group of devices, the
>>>> difference is that in the current test only the production of web
>>>> pages is considered, while I'd like to extend the idea to other types
>>>> of content such as mobile games, video, ringtones and so on.
>>>> We could restrict the existing use-case to web and create one that is
>>>> for applications and games and another one for media contents in
>>>> general.
>>>> Andrea Trasatti
>>>> Blog: http://trasatti.blogspot.com/
>>>> W3C invited expert
> =================
> Andrea Trasatti
> cell. +39 3474112968
> andrea@trasatti.it
> W3C invited expert
Received on Monday, 2 April 2007 14:26:31 UTC

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