Subject: [xsl] Re: Random? From: Dimitre Novatchev <dnovatchev@xxxxxxxxx> Date: Mon, 2 May 2005 20:55:01 +1000 |
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 !
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