Hi Rashid,
(Yet) another option is to try something like this:
define function guid() as xs:unsignedLong {
xdmp:hash64(concat(
xs:string(xdmp:host()),
xs:string(current-dateTime()),
xs:string(xdmp:request-key())))
}
-Matt
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Ryan Grimm
Sent: Monday, May 14, 2007 5:05 PM
To: General Mark Logic Developer Discussion
Subject: Re: [MarkLogic Dev General] About hash map function
Hi Rashid,
In XQuery, the current-dateTime() will always return the same value
during the execution of the query. To see this try executing this
query:
current-dateTime(),
xdmp:sleep(5000),
current-dateTime()
You'll see that result of current-dateTime() is the same for both calls
even though there was a sleep in there for 5 seconds.
If you're looking for a unique value for some id's you could probably
use xdmp:random() to generate an unsigned 64bit integer. While there is
a small possibility of xdmp:random() returning the same value twice, the
same potential problem exists for xdmp:hash64().
Hope that helps.
--Ryan
Nizamuddin, Rashid wrote:
> Could anybody please tell me why I am not getting a unique value when
I
> execute this loop
>
> *let $cnt := 1 to 5*
>
> *for $c in $cnt*
>
> *return *
>
> * let $str := xdmp:hash64(string(current-dateTime()))*
>
> * return $str*
>
> * *
>
> *for each iteration I get the same value. I need to get a unique value
> to insert in some ids elements.*
>
> * *
>
> *Any help will be appreciated*
>
> * *
>
> *Rashid*
>
> * *
>
>
>
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>
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