Re: message from Windson

Windson, welcome to the list!

(see below for initial message)

the ObjectBox is an o:XML compiler/interpreter, it doesn't do code  
transformations per se. The technology used so far for o:XML -> Java  
transformations is by XSLT, but this is still incomplete.

There are as I see it two options available:
1) port an interpreter runtime to J2ME
2) complete a transformation method of o:XML to J2ME code

I think 1) would require the least work with the current status of  
transformations, but 2) would be more interesting long term.
Also I think there is a lot that could be done in describing mobile  
application components using a specialized XML vocabulary, with hooks  
for o:XML code, that could be transformed to either o:XML (for further  
transformation) or device-specific code directly.

For what it's worth, I would probably separate out the project into  
two, or three, parts:
- define the XML vocabulary that best (most  
expressive/flexible/suitable/extensive) describes the type of mobile  
app that you want to produce
- design and build the tools for creating that XML (desktop GUI app?)
- design and build the tools for turning the XML into device code

this way the XML vocabulary has value in it's own right, as a language  
for capturing a specific domain. The tools for creating/manipulating  
the data are also not tied into a particular transformation method, and  
vice versa. So you end up with more loosely coupled components.
If there is an existing language (eg XUL) which comes close to what you  
want to describe, then you could possibly define a set of  
domain-specific extensions to that language, instead of inventing a new  
one.

o:XML is a vocabulary describing programming logic. If you want to  
include (OO or procedural) application code in your XML then you could  
benefit from using it. It could also be useful for building the web  
service and other tools.


best regards,

/m


> PS2:Curiosity, where are you from?
i'm swedish, based in london!

On 30 Jan 2004, at 01:55, Windson Viana de Carvalho wrote:

> Martin,
>
> Thanks for your answer. When I said to port o-xml to mobile devices, i  
> was
> thinking in write a transformer o-xml to j2me(and Superwaba), like  
> o-xml
> to java (adding interface components, security capabilities and
> connection by http). I undestood that Object Box do the process o-xml  
> to
> C++ e o-xml to Java, but i think that i was wrong or not?
> My idea for my work is a tool on desktop that the programmer uses xml  
> to
> discribe a mobile application that access a web service and the tool  
> create
> the code in "native code", j2me for mobile phones and superwaba for  
> palm
> and pocket pcs. Now, i´m looking for a xml language that permit do this
> (I found a lot like UIML, XUL, XForms) but o-xml do more then that
> languages.I´m right?
>
> PS: I´m at the maillist now
> PS2:Curiosity, where are you from?
>
> Thanks again,
>
> Windson
>
>
> On Thu, 29 Jan 2004, Martin Klang wrote:
>
>>
>> Hi Windson,
>>
>> No need to apologise for your english - in any case I'm not english
>> myself!
>> I think that o:XML running on mobile devices for generating and
>> processing XML is extremely interesting, not least for
>> connectivity-type applications.
>> It should be possible to get the full ObjectBox running on J2ME but I
>> think it would be a bit of a squeeze. I've long been meaning to
>> separate out the runtime libs from the compiler, something which would
>> make it much easier, as you don't need much at all to run compiled
>> ObjectBox programs (in object form. possibly serialized to  
>> disk/media).
>> However, the _really_ interesting use of o:XML for mobile devices lies
>> IMHO in transforming the source code into a device-friendly form.
>> I'm hoping to do more work on o:XML -> Java transformations (as well  
>> as
>> other languages) in the near future.
>> In the mean time, do let me know if there is anything in particular
>> that I can help with.
>>
>> best regards,
>>
>> ps - do join the mailinglist! see http://lists.pingdynasty.com/
>>
>> /m
>>
>> On 29 Jan 2004, at 15:08, [email protected] wrote:
>>>
>>>
>>> Message from: Windson.
>>>
>>> Hi, I'm master degree student, and I want to know if it is
>>> insteresting to port o-xml for J2ME e SuperWaba(languages for mobile
>>> devices) e if is not so difficult to extends Object Box for do this?
>>>
>>> PS: Pardon for my poor english
>>>
>>>
>>
>>
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>