Re: [xsl] Re: Random?

Subject: Re: [xsl] Re: Random?
From: Ramkumar Menon <ramkumar.menon@xxxxxxxxx>
Date: Mon, 2 May 2005 17:55:56 +0530
Not sure if I got your question right - but yes, generate-id() is a
valid  XSLT 2.0 Function. if you pass in a node to it, it generates an
id unique for that node.
so it you pass generate-id(<a sentence node>), it wd generate a unique
id for each "sentence" node.

On 5/2/05, Ali Choumane <ali.choumane@xxxxxxx> wrote:
>
> If we can use a function like generate-id()...  that solve my problem.
because
> that we are trying to do with Dimitre has as goal to generate unique values
> for the value of stamp,... but manualy...
> a function as generate-id() exist ??
>
>
> Quoting Ramkumar Menon <ramkumar.menon@xxxxxxxxx>:
>
> > I had a question on this. Can't we use a function like generate-id()
> > on each "sentence" node in the target to generate unique values for
> > the value of stamp ?
> > Just curious....
> >
> > rgds,
> > Menon
> >
> > On 5/2/05, Dimitre Novatchev <dnovatchev@xxxxxxxxx> wrote:
> > > Hi Ali,
> > >
> > > On 5/2/05, Ali Choumane <ali.choumane@xxxxxxx> wrote:
> > > > Hi Dimitre,
> > > > first, thanks for your help,
> > > > second,
> > > > I am using the seconds part of the current time -- as the value of
the
> > pSeed
> > > > parameter (by using the library  of exslt).
> > > >
> > > > But the problem is : I am calling the function randomSequence several
> > times
> > > > per second ,so I have the same value of the parameter pSeed to the
> > > > randomSequence.
> > > >
> > > > I want to use the third part of the current time (milliseconds) ???
its
> > > > possible?? I can't find anything!
> > >
> > > It seems that you are generating a lot of sequences of random numbers
> > > -- with what length?
> > >
> > > I would suggest two ways around the problem:
> > >
> > >   1. Generate only one (but sufficiently long) sequence of randoms,
> > > then use its subsequences as needed.
> > >
> > >   2. In case you'd need N sequences of random numbers, then generate
> > > a sequence of N random numbers and use these as the seeds to generate
> > > the corresponding N sequences.
> > >
> > > Cheers,
> > > Dimitre Novatchev.
> > >
> > > >
> > > >
> > > > Quoting Dimitre Novatchev <dnovatchev@xxxxxxxxx>:
> > > >
> > > > > Hi Ali,
> > > > >
> > > > > On 4/29/05, Ali Choumane <ali.choumane@xxxxxxx> wrote:
> > > > > > Hi Dimitre,
> > > > > >
> > > > > > I am using the template "randNext" in random.xsl :
> > > > > >
> > > > > > ...
> > > > > > <sentence>
> > > > > > <xsl:attribute name="stamp">
> > > > > >     <xsl:call-template name="randNext">
> > > > > >         <xsl:with-param name="arg1" select="1"/>
> > > > > >     </xsl:call-template>
> > > > > >  </xsl:attribute>
> > > > > >  <xsl:attribute name="state">nonDesamb</xsl:attribute>
> > > > > >  <xsl:value-of select="concat($arg1/sentence[last()], $arg2)"/>
> > > > > > </sentence>
> > > > > > ...
> > > > > >
> > > > > > and this is a part of result of transformation:
> > > > > > ...
> > > > > >  <sentence stamp="39022" state="nonDesamb">111 111 111</sentence>
> > > > > >  <sentence stamp="39022" state="nonDesamb"> 222 222</sentence>
> > > > > >  <sentence stamp="39022" state="nonDesamb"> 333 333
333</sentence>
> > > > > >  <sentence stamp="39022" state="nonDesamb"> 444 444
444</sentence>
> > > > > >  <sentence/>
> > > > > >  <sentence stamp="39022" state="nonDesamb">555 555 555</sentence>
> > > > > >  <sentence stamp="39022" state="nonDesamb"> 666 666
666</sentence>
> > > > > >  <sentence stamp="39022" state="nonDesamb"> 777 777
777</sentence>
> > > > > >  <sentence stamp="39022" state="nonDesamb"> 888 888 888, 999
> > > > > 999999</sentence>
> > > > > > ...
> > > > > >
> > > > > > As the result show, "stamp" it's not a key now. I think because
> > "arg1" is
> > > > > > fixed.
> > > > > >
> > > > > > and I am using the template "randomSequence" in random.xsl, but
it
> > can't
> > > > > > resolve the problem.
> > > > >
> > > > > randomSequence produces a sequence of (the pLength parameter) N
> > > > > numbers. If the seed (the pSeed parameter) is the same on two
> > > > > invocations of randomSequence, the two produced sequences are, of
> > > > > course, the same.
> > > > >
> > > > > > I think , if I put a variable value of "arg1" , can resolve the
> > problem?
> > > > >
> > > > > In order to achieve truly "random" results, the transformation has
to
> > > > > use some non-fixed number, such as the seconds part of the current
> > > > > time -- and this can be passed as a parameter to the transformation
by
> > > > > the external code that invokes it.
> > > > >
> > > > > Then this number can be used as a seed -- to be passed as the value
of
> > > > > the pSeed parameter.
> > > > >
> > > > > > But how, when we can't change the value of variables in XSLT?
> > > > >
> > > > > We can't and actually we don't need to.
> > > > >
> > > > > Cheers,
> > > > > Dimitre novatchev.
> > > > >
> > > >
> > > > Ali CHOUMANE
> > > > M2R III ,Univ Joseph fourrier, UFR IMA
> > > > WAM/INRIA & GETA/CLIPS
> > > > portable.      06 71 55 80 65
> > > > Bureau(INRIA). 04 76 61 54 13
> > > > Email. ali.choumane@xxxxxxx
> > > >
> > > > -------------------------------------------------
> > > > envoyi via Webmail/IMAG !
> > >
> > >
> >
> >
> > --
> > Shift to the left, shift to the right!
> > Pop up, push down, byte, byte, byte!
> >
> > -Ramkumar Menon
> >  A typical Macroprocessor
> >
> >
>
> Ali CHOUMANE
> M2R III ,Univ Joseph fourrier, UFR IMA
> WAM/INRIA & GETA/CLIPS
> portable.      06 71 55 80 65
> Bureau(INRIA). 04 76 61 54 13
> Email. ali.choumane@xxxxxxx
>
> -------------------------------------------------
> envoyi via Webmail/IMAG !
>
>


--
Shift to the left, shift to the right!
Pop up, push down, byte, byte, byte!

-Ramkumar Menon
 A typical Macroprocessor

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