Re: Semantic Web using Magritte

>> Just by analogy: did you have a look at the way PierBlog creates the
>> RSS feed for the blog? Seems to be a similar problem...
>
> It doesn't really use the descriptions to generate the blog items, it
> could (or better it should) though.
>
> Lukas
>
>>
>>
>> -- Matthias
>>
>> On Dec 5, 2007 3:33 PM,  <smalltalk@...> wrote:
>>> Thanks for the input, I had definitely considered that. I was even
>>> looking at XSLT but I really like keeping everything in Smalltalk. I
>>> do indeed need to go many directions since there are many entry
>>> points
>>> and services with this application. I also have explored creating new
>>> canvases and doing some things with Readers/Writers like in Pier.
>>>
>>> I would do exactly what your describing, but I still am left with the
>>> problem of generating good output from my objects. So for example,
>>> sticking with music, say we have an Album object. I have all kinds of
>>> stuff already for Magritte in there for this object. Now I want to do
>>> something like in my seaside control provide an RDF button that when
>>> clicked, generates the RDF output. I would need to traverse the
>>> entire
>>> object/description graph and output the RDF with the album name,
>>> title, etc. and the track listing, and then artist info, etc. It
>>> definitely would suck without the metadata to identify which RDF URI
>>> corresponds with each object in the graph.
>>>
>>> Essentially, I am thinking of creating a simpler
>>> serializer/deserializer driven by Magritte descriptions similar to
>>> what I've done before in .NET and Java. I am just not sure if that is
>>> very Smalltalk like as I like to always think there is a better way
>>> than resorting to what I have done in those languages :)
>>>
>>> For instance, there is a JSON serializer in .NET where I can say
>>> Album.ToJSON(), or the XML serializer Album.ToXML(). It so happens
>>> that depending on the serializer/deserializer, it will read
>>> attributes
>>> I put on my class like [XmlIgnore]. That stuff is really primitive I
>>> think compared to what I can do in Magritte.
>>>
>>> I guess I am trying to prevent a future meltdown because as this
>>> application is developed, I am going to have to start going back and
>>> forth with lots of web services to communicate with Java and Flash in
>>> particular. I want to set a good example on the Smalltalk side by
>>> generating everything automagically.
>>>
>>>
>>> Quoting Philippe Marschall <philippe.marschall@...>:
>>>
>>>> Hi
>>>>
>>>> For audioscrobbler I did the opposite, from given XML to Magritte:
>>>> http://source.lukas-renggli.ch/audioscrobbler.html
>>>> The audioscrobbler xml is quite gay and I was surprised when I got
>>>> it
>>>> working. It is also used for feed parsing of the Seaside homepage.
>>>>
>>>> Cheers
>>>> Philippe
>>>>
>>>> 2007/12/5, smalltalk@... <smalltalk@...>:
>>>>> I was wondering if anyone tried to do any kind of XML mapping using
>>>>> Magritte. I have the requirement to generate RDF from my business
>>>>> objects, so I was thinking of ways to simplify this. My idea was to
>>>>> add something in the Magritte descriptions for each object that
>>>>> pointed to the appropriate URI and schema.
>>>>>
>>>>> This may be more trouble than its worth. I suppose anyone who has
>>>>> done
>>>>> anything with generating XML from Magritte could maybe provide some
>>>>> insight on any hurdles they faced, design ideas, etc.
>>>>>
>>>>> I also am looking at Magritte for simplifying XML serialization in
>>>>> general. My problem overall is that I have to generate all these
>>>>> formats (XML for web service, RSS, ATOM, RDF) and I do not want to
>>>>> have to write a complex parser to even do this 1/2 way dynamically.
>>>>> Are there any other libraries out there that do this already? For
>>>>> instance, I did notice that there is that library (name escapes me)
>>>>> that lets you port your objects between Smalltalk versions by
>>>>> dumping
>>>>> to XML files, so that is somewhat close to what I need to do.
>>>>>
>>>>> I am thinking since I already have a large number of Magritte
>>>>> descriptions, I might as well expand upon that. This will also
>>>>> let me
>>>>> do things like change a schema dynamically and provide easy access
>>>>> memento objects to do things like create a preview of whatever
>>>>> format
>>>>> I am trying to produce. Thoughts?
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> SmallWiki, Magritte, Pier and Related Tools ...
>>>>> https://www.iam.unibe.ch/mailman/listinfo/smallwiki
>>>>>
>>>>
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>>>
>>>
>>>
>>>
>>>
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>>
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>
> --
> Lukas Renggli
> http://www.lukas-renggli.ch
>
>
> _______________________________________________
> SmallWiki, Magritte, Pier and Related Tools ...
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>