Re: [xsl] Random UUID in pure XSLT?

["Dimitre Novatchev dnovatchev@xxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>]

>  I was using the XPath/XQuery Builder tool and it indeed produces a new
result on each invocation.

  I was using the *Oxygen *XPath/XQuery Builder tool and it indeed produces
a new result on each invocation.

On Wed, Nov 11, 2020 at 11:28 AM Dimitre Novatchev <dnovatchev@xxxxxxxxx>
wrote:

> That's a great explanation, Dr. Kay!
>
> I was using the XPath/XQuery Builder tool and it indeed produces a new
> result on each invocation.
>
> Thanks,
> Dimitre
>
> On Wed, Nov 11, 2020 at 11:19 AM Michael Kay mike@xxxxxxxxxxxx <
> xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:
>
>> According to the spec, unparsed-text() is deterministic, which means that
>> two calls with the same argument should return the same result. You're
>> relying on a Saxon non-conformance, I fear!
>>
>> Except that if you make the call in a loop, Saxon will probably loop-lift
>> it, thus becoming conformant and making your code deliver a stream of
>> identical UUIDs.
>>
>> You can probably get round it by using
*unparsed-text("https://uuidgen.org/api/v/4
>> <https://uuidgen.org/api/v/4>?x=" || position())*
>>
>> Michael Kay
>> Saxonica
>>
>> On 11 Nov 2020, at 18:32, Dimitre Novatchev dnovatchev@xxxxxxxxx <
>> xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:
>>
>> >  how can I go about producing random UUIDs, in dozens or hundreds,
>> inside an XSLT pipeline, without extension functions in Saxon.
>>
>> This is actually very easy and doesn't require the use of any extension
>> functions:
>>
>> *unparsed-text("https://uuidgen.org/api/v/4
>> <https://uuidgen.org/api/v/4>")*
>>
>> or if you need N of them:
>>
>> *for $i in 1 to $N*
>> *   return  unparsed-text("https://uuidgen.org/api/v/4
>> <https://uuidgen.org/api/v/4>") *
>>
>>
>>
>> p
>>
>> HTH, Dimitre
>>
>> On Tue, Nov 10, 2020 at 8:36 AM Piez, Wendell A. (Fed)
>> wendell.piez@xxxxxxxx <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:
>>
>>> XSL Friends b
>>>
>>>
>>>
>>> Today I write from the day job, where I am researching the question of
>>> how can I go about producing random UUIDs, in dozens or hundreds, inside
an
>>> XSLT pipeline, without extension functions in Saxon. The Java
randomUUID()
>>> function works nicely when itbs available, but I need to distribute the
>>> capability for SaxonHE and eventually SaxonJS.
>>>
>>>
>>>
>>> We do not have an available implementation of RFC 4122 v4 brandom
UUIDb
>>> in pure XSLT do we, free to use (and study)? I know the functional nature
>>> of the language makes randomness, um, problematic (when isnbt it?),
which
>>> sometimes means workarounds b thatbs all fine. Indeed so would calling
out
>>> to a web service if it is known to be reliable. I have thought about
>>> handing a list of UUIDs in at runtime, but as I said, there may sometimes
>>> be hundreds and perhaps thousands, which makes that approach seem a bit
>>> scary.
>>>
>>>
>>>
>>> Any thoughts or perspective would be most welcome.
>>>
>>>
>>>
>>> Thanks, Wendell
>>>
>>>
>>>
>>>
>>>
>>>
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>>>
>>
>>
>> --
>> Cheers,
>> Dimitre Novatchev
>> ---------------------------------------
>> Truly great madness cannot be achieved without significant intelligence.
>> ---------------------------------------
>> To invent, you need a good imagination and a pile of junk
>> -------------------------------------
>> Never fight an inanimate object
>> -------------------------------------
>> To avoid situations in which you might make mistakes may be the
>> biggest mistake of all
>> ------------------------------------
>> Quality means doing it right when no one is looking.
>> -------------------------------------
>> You've achieved success in your field when you don't know whether what
>> you're doing is work or play
>> -------------------------------------
>> To achieve the impossible dream, try going to sleep.
>> -------------------------------------
>> Facts do not cease to exist because they are ignored.
>> -------------------------------------
>> Typing monkeys will write all Shakespeare's works in 200yrs.Will they
>> write all patents, too? :)
>> -------------------------------------
>> Sanity is madness put to good use.
>> -------------------------------------
>> I finally figured out the only reason to be alive is to enjoy it.
>>
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>>
>
>
> --
> Cheers,
> Dimitre Novatchev
> ---------------------------------------
> Truly great madness cannot be achieved without significant intelligence.
> ---------------------------------------
> To invent, you need a good imagination and a pile of junk
> -------------------------------------
> Never fight an inanimate object
> -------------------------------------
> To avoid situations in which you might make mistakes may be the
> biggest mistake of all
> ------------------------------------
> Quality means doing it right when no one is looking.
> -------------------------------------
> You've achieved success in your field when you don't know whether what
> you're doing is work or play
> -------------------------------------
> To achieve the impossible dream, try going to sleep.
> -------------------------------------
> Facts do not cease to exist because they are ignored.
> -------------------------------------
> Typing monkeys will write all Shakespeare's works in 200yrs.Will they
> write all patents, too? :)
> -------------------------------------
> Sanity is madness put to good use.
> -------------------------------------
> I finally figured out the only reason to be alive is to enjoy it.
>
>


--
Cheers,
Dimitre Novatchev
---------------------------------------
Truly great madness cannot be achieved without significant intelligence.
---------------------------------------
To invent, you need a good imagination and a pile of junk
-------------------------------------
Never fight an inanimate object
-------------------------------------
To avoid situations in which you might make mistakes may be the
biggest mistake of all
------------------------------------
Quality means doing it right when no one is looking.
-------------------------------------
You've achieved success in your field when you don't know whether what
you're doing is work or play
-------------------------------------
To achieve the impossible dream, try going to sleep.
-------------------------------------
Facts do not cease to exist because they are ignored.
-------------------------------------
Typing monkeys will write all Shakespeare's works in 200yrs.Will they write
all patents, too? :)
-------------------------------------
Sanity is madness put to good use.
-------------------------------------
I finally figured out the only reason to be alive is to enjoy it.