That's a good reminder about the document and collection URIs and the
ability to use them as co-occurrences!

 

From: [email protected]
[mailto:[email protected]] On Behalf Of James Fuller
Sent: Thursday, January 17, 2013 12:06 PM
To: MarkLogic Developer Discussion
Cc: Damon Feldman
Subject: Re: [MarkLogic Dev General] directory facet?

 

somewhat related ... there are 2 hidden indexes in MarkLogic;

 xdmp:document (uris enabled)

 xdmp:collection (collection uris enabled)

which you might be able to leverage. The canonical example for these indexes
are as follows; which returns all uris along with their collection;

 
cts:element-value-co-occurrences(xs:QName("xdmp:collection"),xs:QName("xdmp:
document),"map")

as this is hidden, I make no claims on support (as in there is none) ... but
thought it might be useful

hth, Jim Fuller

 

On Thu, Jan 17, 2013 at 3:44 PM, Michael Sokolov <[email protected]>
wrote:

Yeah - thanks Geert and Damon: I think you've confirmed for me that
there is no directory-faceting as such, but that I can process all the
matching uris, which was going to be my fallback.  My guess is this
should be acceptable for < 100K matches or so

-Mike


On 1/17/2013 12:37 AM, Damon Feldman wrote:
> Mike,
>
> This is moderately efficient, so may work depending on your use case and
the number of matching uris:
>
> declare namespace functx = "http://www.functx.com";;
> declare function functx:substring-before-last-fslash($arg as xs:string?)
as xs:string? {
>
>   let $dir := replace($arg, '^(.*)/.*', '$1')
>   return if (ends-with($dir, "/")) then $dir else ()  (: if there is no /
at all, the replace will have no effect, so check the terminating slash to
ensure it is a directory :)
>
>   } ;
>
>   let $q := ... some query ...
>   distinct-values(cts:uris("", (), $q) !
functx:substring-before-last-fslash(.))
>
> Note the "!" operator is a shorthand for a for loop in ML 6. Note the
function is based on functx, but has the "/" delimiter hard-coded.
>
> Yours,
> Damon
> --
> Damon Feldman
> Sr. Principal Consultant, MarkLogic
>
> -----Original Message-----
> From: [email protected]
[mailto:[email protected]] On Behalf Of Michael
Sokolov
> Sent: Wednesday, January 16, 2013 10:38 PM
> To: General Developer Discussion
> Subject: [MarkLogic Dev General] directory facet?
>
> Is there an efficient way to retrieve all the directories containing the
documents matching a query, in the way that cts:words does for words?
>
> -Mike
>
>
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