[MarkLogic Dev General] MarkLogic XQuery Tag LibraryandJSTLXMLTag Library

[Alan Darnell]

Thanks Matt,

I appreciate the leads.  We're looking at Apache Struts and JSF as  
possible frameworks.  I can see now how pushing the xquery stuff onto  
the ML server makes a lot of sense in that context because it keeps a  
clean separation between these frameworks and the backend  database.   
Wrapping the xquery in modules to apply XHTML formatting means we can  
reuse the core queries in contexts where we want XML rather than  
XHTML (e.g. if we want to create Web services or feed the results  
into an XMLHttpRequest object).

Alan





On 5-Apr-07, at 1:49 PM, Griffin, Matt wrote:

> Hi Alan,
>
> Most of our queries are in xqy modules on the server.  For single-shot
> formatting functions there's not much point but it's definitely a good
> idea for data extraction functions that would be reused.
>
> As far as interaction with java, we do everything with xdbc.  The
> resulting html fragment gets added to the model by the controller and
> the jsp view renders the page and inserts the fragment in the proper
> place.  It's simple and works for us but I'd be interested if anyone
> thinks there's a better approach.
>
> -Matt
>
> -----Original Message-----
> From: general-bounces at developer.marklogic.com
> [mailto:general-bounces at developer.marklogic.com] On Behalf Of Alan
> Darnell
> Sent: Thursday, April 05, 2007 11:36 AM
> To: General Mark Logic Developer Discussion
> Subject: Re: [MarkLogic Dev General] MarkLogic XQuery Tag
> LibraryandJSTLXMLTag Library
>
> Matt,
>
> Do you store these queries as xqy files on the Mark Logic server and
> bring the content into your servlet via HTTP or do you keep the query
> logic in the servlet and grab the results from Mark Logic via XDBC?
> Once you have the data from the ML server as an HTML fragment, do you
> then pass this to a JSP page for rendering or do you do all the
> rendering in the servlet?  If you pass the HTML fragment to a JSP
> page, what mechanism do you use to do this?
>
> Sorry for the dim questions -- I'm trying to figure out how to apply
> the "classic" MVC model to Mark Logic.
>
> Alan
>
>
> On 4-Apr-07, at 6:03 PM, Griffin, Matt wrote:
>
>> I've been trying to push this kind of content processing back into ML
>> wherever possible.  I still try to be careful about separation of
>> concern so I write my queries as the result of two functions.  The
>> first
>> selects relevant content and is reusable, the second wraps it for
>> formatting.  Java can then just use the result as a stream and put it
>> where it needs to go.
>>
>> The call would look something like this for an html fragment:
>> element ul {
>>   for $j select-journals-by-term($term)
>>   return
>>       element li {
>>         attribute id { $j//journal-id },
>>         $j//title
>>       }
>>
>>
>> -Matt
>
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