[TM4J-users] Re: my saas application

[Bret C. <bre...@ya...>]

Hi Andreas,

saas also has a "presentation layer" on the data-input
side, all the GUI windows.

Harold,

You requested a copy of my modified-TMNav-based
application. I'm doing a re-write, which should be
done in a few weeks. Would you like to wait until
then, or would you like a copy of what I've done up
until this point? (Also, the user interface is in
Portuguese. I tried an earlier version last month to
English & sent off the results to Christoph.)

Bret

--- Andreas Fleck <And...@gm...> wrote:

> Hi Bret,
> 
> thanks for your interesting answer.
> 
> I´m gonna give your "business layer" of the sass
> aplication a good read in a
> short while and then see, how many of my own classes
> i have to implement on
> this.
> 
> Greetings to you
> Andreas
> 
> > --- Ursprüngliche Nachricht ---
> > Von: Bret Cohen <bre...@ya...>
> > An: tm4...@li...
> > Betreff: [TM4J-users] Re: TM4J and Software
> Architecture
> > Datum: Tue, 14 Jun 2005 18:02:15 -0700 (PDT)
> > 
> > Andreas,
> > 
> > I would say that the "database layer" as you call
> it,
> > is handled by TM4J, including the indexes and
> tologx
> > packages that allow data to be extracted from the
> > topic map.
> > 
> > The business model layer, if there is one, would
> be
> > handled by your own classes. In the application I
> > created, which you now have, it is handled by my
> saas
> > classes.
> > 
> > Pankoucke handles a different layer. I think I've
> > referred to that layer as an "abstraction layer",
> > though that may not be the best description. It
> relies
> > on the TM4J classes, and possibly on your
> "business
> > model classes", to extract the data from the
> > "database"  (really the topic map loaded from
> either a
> > XTM file or a database), and then builds what is
> > referred to in the Panckoucke documentation as an
> > "abstract model" of nodes and arcs, which is then
> > passed to the renderer (the presentation layer).
> So I
> > would probably locate Pankcoucke and its layer
> between
> > the business model layer and the presentation
> layer.
> > 
> > Also, you can develop your own abstractors...
> > 
> > Out of time...
> > 
> > Bret
> > 
> > --- tm4...@li...
> wrote:
> > 
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> > > Today's Topics:
> > > 
> > >    1. TM4J and Software Architecture (3-tier)
> > > (Andreas Fleck)
> > > 
> > > --__--__--
> > > 
> > > Message: 1
> > > Date: Mon, 13 Jun 2005 13:51:39 +0200 (MEST)
> > > From: "Andreas Fleck" <And...@gm...>
> > > To: tm4...@li...
> > > Subject: [TM4J-users] TM4J and Software
> Architecture
> > > (3-tier)
> > > 
> > > Hi everybody,
> > > 
> > > i´m currently in the Design phase of the
> software,
> > > which i want to write
> > > (the software is a plug-in for Eclipse, which is
> > > displaying a Topic Map as a
> > > Touchgraph).
> > > 
> > > I want to use the Pancouke library and the
> > > Touchgraph library (similar to
> > > TMNav) for my project.
> > > 
> > > Now, i am pretty confused about the different
> > > abstraction layers of my
> > > programm.
> > > 
> > > My software should have a typical 3-tier
> > > architecture, like this:
> > > 
> > > Presentation Model layer
> > >         ^
> > >         |
> > > Business Model layer
> > >         ^
> > >         |
> > > Database layer
> > >         ^
> > >         |
> > > Database
> > > 
> > > Can somebody maybe tell me under what Panckouke,
> the
> > > TM4J library, the XTM
> > > Topic Map and Touchgraph can be filed within
> such an
> > > architecture? And what
> > > the equivalent to the database layer might be?
> > > 
> > > I´m thinking of something like this:
> > > 
> > > Presentation Model layer (Displaying the Topic
> > > Map->Touchgraph libraries)
> > >         ^
> > >         |
> > > Business Model layer     (Filtering the Topic
> > > Map->Panckouke)
> > >         ^
> > >         |
> > > Database layer           ??????
> > >         ^
> > >         |
> > > Database                  (XTM File????)
> > > 
> > > Is this correct? Or is this the complete wrong
> > > approach when handling Topic
> > > Maps?
> > > 
> > > I hope you understand what i am trying to say.
> > > 
> > > Any answer is highly appreciated, as the
> > > architecture of the software is
> > > really crucial to my project.
> > > I am thankful for any thoughts/ideas/statements
> > > about this or maybe links on
> > > this topic.
> > > 
> > > Greeting to all
> > > Andreas
> > > 
> > > 
> > > 
> > > 
> > > 
> > > 
> > > -- 
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> Tempo-Garantie!
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> > > 
> > > 
> > > 
> > > --__--__--
> > > 
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> > > End of Tm4j-users Digest
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> > 
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> 
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