[MarkLogic Dev General] Referencing a string
dsokolsky at marklogic.com
Tue Jun 26 13:56:49 PDT 2007
Ah, I missed the bit about using XCC to pass in the variable, sorry.
To pass this in via XCC, I think you will have to take the approach of
passing in a string (or several strings, if that makes more sense) and
then, on the XQuery side, have code that parses the string(s) into an
appropriate cts:query. I don't think XCC will currently allow you to
pass in a variable of type cts:query.
For example, if you have a form that the user uses to enter a search,
you can pass in this string and have the cts:query parsing code turn the
string into a cts:query (like the sample in the doc I mentioned
From: general-bounces at developer.marklogic.com
[mailto:general-bounces at developer.marklogic.com] On Behalf Of Mattio
Sent: Tuesday, June 26, 2007 12:28 PM
To: General Mark Logic Developer Discussion
Subject: Re: [MarkLogic Dev General] Referencing a string
Thanks Danny. That does make more sense.
I did try to change the type of the variable to cts:query while
debugging, but I couldn't get it to work. I think it's becuase I'm
passing in the value from my app using XCC with:
Even with the .NET XCC guide, I wasn't able to figure out the proper
syntax to pass a variable of type cts:query. Any pointers?
On 6/26/07, Danny Sokolsky <dsokolsky at marklogic.com> wrote:
> Hi Mattio,
> I think the key is that you need to define your external variable as
> type cts:query. Passing in the external variable is definitely the
> preferred technique over using xdmp:eval. Here is a simple example:
> Suppose you have a file on your app server root named invoke.xqy with
> the following contents:
> define variable $query as cts:query external
> xdmp:estimate(cts:search(doc(), $query))
> You can then invoke this XQuery module, passing it a cts:query, by
> issuing a query as follows:
> xdmp:invoke("invoke.xqy", (xs:QName("query"),
> You can have some logic in this module to construct the cts:query to
> make it dynamic (based on user inputs, for example). For a brief
> example of how you might do that, see the "Creating a cts:query
> Parser" section in the "Composing cts:query Expressions" chapter of
> the Developer's Guide.
> Does that help?
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