Rajesh,
Since this is basically a rendoring issue, it is my opinion that the
processing should be done in the view and not the model.
<vendor>
As a side note, some of our customer have found it advantages to pre-parse
the XML into Java objects, and rendor from there. This can can have a
significant performance impact since parsing is expensive. Having an object
cache to put the pre-parsed objects into could be a big win. GemStone/J PCA
is good for that sort of thing...
</vendor>
-Chris.
> -----Original Message-----
> From: Rajesh Budhiraja [SMTP:[EMAIL PROTECTED]]
> Sent: Friday, April 07, 2000 4:20 AM
> To: [EMAIL PROTECTED]
> Subject: Model 2 with XML
>
> Hi,
> We are in the process of designing a framework which will act as a
> template
> for web applications. We have based it on Model 2 Architecture. I
> downloaded
> the Pet Store from Sun's side as a starting point. The idea is to have the
> flexibility to design the look and feel of pages separately from
> development
> team. To do this we thought of XMLising the pages. Now we can open some
> XML/XSL editor and modify/design the page. The application will load the
> proper XML file at runtime, add some data (received from database queries)
> and present it to the user. As of now most of the browsers do not support
> (or partially support) XML, so we will pass the final XML/XSL through a
> parser to generate HTML. Now, I have some doubts:
>
> 1) Where should the XML loading and modification with the model data be
> done - View or Model ?
>
> 2) If we do it in View, will it not be putting processing logic in View ?
> Also due to this processing will it affect the web server efficiency when
> the no. of concurrent requests increase ?
>
> 3) If we do it in Model - load the XML, modify it with the model data so
> that view can request the final XML. The issues here will be
>
> 3a) What format should be used for view-model XML transfer - ASCII (after
> converting XML to String), or serialized Document Object. Which one will
> be
> more efficient ?
>
> 3b) Because we are passing the whole XML in a remote call, how will it
> compare with 2) where only the Java object encapsulating the data is
> passed
> ?
>
> Any suggestions/comments are welcome. Any pointer to some similar
> patterns/frameworks will be highly appreciated.
> TIA
> Rajesh Budhiraja
>
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