[MarkLogic Dev General] uuid implementation in Xquery

[Michael Blakeley]

I happen to have one in front of me right now. Note that there are at 
least five flavors of UUID - I chose to implement type-4.

(: this is a v4 UUID :)
define function generate-uuid-v4()
  as xs:string
{
   let $x := concat(
     xdmp:integer-to-hex(xdmp:random()),
     xdmp:integer-to-hex(xdmp:random())
   )
   return string-join((
     substring($x, 1, 8), substring($x, 9, 4),
     substring($x, 13, 4), substring($x, 17, 4), substring($x, 21, 14)
     ), '-'
   )
}

Ref: http://en.wikipedia.org/wiki/UUID

-- Mike

Gary Vidal wrote:
>  
> 
> I was wondering if anybody has implemented a uuid (universally unique
> identifier) function in Xquery.  I would like to use this to generate
> id's or a comparable id generation scheme
> 
>  
> 
> Regards,
> 
>  
> 
> Gary Vidal
> 
> Sr. .Net Developer
> 
> Tel: 212-592-4946
> 
> gvidal at alm.com
> 
>  
> 
> 
> 
> 
> ------------------------------------------------------------------------
> 
> _______________________________________________
> General mailing list
> General at developer.marklogic.com
> http://xqzone.com/mailman/listinfo/general

-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/x-pkcs7-signature
Size: 4532 bytes
Desc: S/MIME Cryptographic Signature
Url : http://xqzone.marklogic.com/pipermail/general/attachments/20070810/53d31fba/smime.bin