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Re: [xsl] Re: question on random numbers for browser XSLT

Subject: Re: [xsl] Re: question on random numbers for browser XSLT
From: Dimitre Novatchev <dnovatchev@xxxxxxxxx>
Date: Sat, 25 Jul 2009 07:32:34 -0700
On Sat, Jul 25, 2009 at 2:05 AM, Hermann
Stamm-Wilbrandt<STAMMW@xxxxxxxxxx> wrote:
>> Or, for XSLT 1.0 one could write the following (knowing that the
>> values contain only uppercase latin characters or digits):
>
> You cannot assume that in general. Here is what IDs get generated
> for different browser/OS when clicking on this link:
> http://www.stamm-wilbrandt.de/en/xsl-list/random/scott.xml
>
> Linux:
> id0x098f7528 B Firefox 3.0.10
> o770813095 B  B Opera 9.64
> IDACI52B B  B  B Internet Explorer 6.0.2800 (ies4linux)
>
> Windows:
> id0x0b563640 B Firefox 3.0.12
> IDACAYFC B  B  B Internet Explorer 6.0.2900
> o5002021 B  B  B Opera 9.63
> id2010145 B  B  Safari 4.0.2
> id205096 B  B  B Chrome 2.0.172


So, just add the lower-case characters to $vChars or translate the id
to upper case in the definition of $vNumericalVal.



--
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
-------------------------------------
You've achieved success in your field when you don't know whether what
you're doing is work or play

>
>
> $ cat scott.xml
> <?xml version="1.0" encoding="ISO-8859-1"?>
> <?xml-stylesheet type="text/xsl" href="scott.xsl"?>)
> <tag/>
> $ cat scott.xsl
> <xsl:stylesheet version="1.0"
> xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
> B xmlns:exsl="http://exslt.org/common";
> xmlns:msxsl="urn:schemas-microsoft-com:xslt"
> B exclude-result-prefixes="exsl msxsl"
>>
> B <xsl:output method="html" encoding="UTF-8" />
>
> B <msxsl:script language="JScript" implements-prefix="exsl">
> B  B this['node-set'] = B function (x) {
> B  B  B return x;
> B  B }
> B </msxsl:script>
>
> B <xsl:template match="/">
> B  B <html>
> B  B  B <body>
> B  B  B  B <xsl:variable name="seed"><a/></xsl:variable>
> B  B  B  B <xsl:value-of select="generate-id(exsl:node-set($seed))" />
> B  B  B </body>
> B  B </html>
> B </xsl:template>
>
> </xsl:stylesheet>
>
>
>
> Mit besten GrC<Cen / Best wishes,
>
> Hermann Stamm-Wilbrandt
> Developer, XML Compiler
> WebSphere DataPower SOA Appliances
> ----------------------------------------------------------------------
> IBM Deutschland Research & Development GmbH
> Vorsitzender des Aufsichtsrats: Martin Jetter
> GeschC$ftsfC<hrung: Erich Baier
> Sitz der Gesellschaft: BC6blingen
> Registergericht: Amtsgericht Stuttgart, HRB 243294
>
>
>
> B  B  B  B  B  B  Dimitre Novatchev
> B  B  B  B  B  B  <dnovatchev@gmail
> B  B  B  B  B  B  .com> B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B 
B  B  B  B  B  B  B  B  B  B To
> B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B 
xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> B  B  B  B  B  B  07/25/2009 01:51 B  B  B  B  B  B  B  B  B  B  B  B  B  B 
B  B  B  B  B  B  B  cc
> B  B  B  B  B  B  AM
> B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B 
B  B  B  B  B  B  B  B  Subject
> B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  Re: [xsl] Re:
question on random
> B  B  B  B  B  B  Please respond to B  B  B  B  numbers for browser XSLT
> B  B  B  B  B  B  xsl-list@xxxxxxxx
> B  B  B  B  B  B  B lberrytech.com
>
>
>
>
>
>
>
>
> Or, for XSLT 1.0 one could write the following (knowing that the
> values contain only uppercase latin characters or digits):
>
> <xsl:stylesheet version="1.0"
> xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
> xmlns:testmap="testmap"
> exclude-result-prefixes="xsl testmap"
>>
> B  <xsl:import href="str-dvc-map.xsl"/>
>
> B  <!-- to be applied on any xml source -->
>
> B  <testmap:testmap/>
>
> B  <xsl:output method="text"/>
>
> B  <xsl:variable name="vChars" select=
> B  "'0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ'"
> B  />
>
> B  <xsl:template match="/">
> B  B  <xsl:variable name="vTestMap" select="document('')/*/testmap:*[1]"/>
>
> B  B  <xsl:variable name="vNumericVal">
> B  B  B  B  B  B  B  B  B <xsl:call-template name="str-map">
> B  B  B  B  B  B  B  B  B  B <xsl:with-param name="pFun"
select="$vTestMap"/>
> B  B  B  B  B  B  B  B  B  B <xsl:with-param name="pStr"
select="'IDACQ0LB'"/>
> B  B  B  B  B  B  B  B  B </xsl:call-template>
> B  B  </xsl:variable>
>
> B  B  <xsl:value-of select="$vNumericVal mod 65536"/>
> B  </xsl:template>
>
> B  B <xsl:template name="double" match="testmap:*">
> B  B  B <xsl:param name="arg1"/>
>
> B  B  B <xsl:value-of select="string-length(substring-before
> ($vChars,$arg1))"/>
> B  B </xsl:template>
>
> </xsl:stylesheet>
>
>
>
> --
> 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
> -------------------------------------
> You've achieved success in your field when you don't know whether what
> you're doing is work or play
>
>
>
> On Fri, Jul 24, 2009 at 4:06 PM, Dimitre Novatchev<dnovatchev@xxxxxxxxx>
> wrote:
>> Hermann,
>>
>>> Now these values look different for different browsers, and need to
>>> "somehow"
>>> be converted to a seed value for FXSLs random generator.
>>>
>>> Ideas?
>>
>>
>> You could try something simple as the following:
>>
>> B  sum(string-to-codepoints($pId)) B  mod B  65536
>>
>>
>> and see that the results' variety is satisfactory.
>>
>> --
>> 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
>> -------------------------------------
>> You've achieved success in your field when you don't know whether what
>> you're doing is work or play
>>
>>
>>
>>
>> On Fri, Jul 24, 2009 at 3:28 PM, Hermann
>> Stamm-Wilbrandt<STAMMW@xxxxxxxxxx> wrote:
>>> Dimitre,
>>>
>>>> > If you have decided to go with a service providing random numbers
> then
>>>> > xslt-ish way (set based) to do it would be a service receiving a
> number
>>> and
>>>> > returning an xml with a specified number of random numbers.
>>>> >
>>>>
>>>> Using a service to provide a random sequence is much more unreliable
>>>> and inefficient than just doing this in pure XSLT, as this has been
>>>> done by FXSL for many years:
>>>>
>>>>
>>>
>
http://fxsl.sourceforge.net/articles/Random/Casting%20the%20Dice%20with%20FXS
L-htm.htm
>
>>>
>>> first of all, FXSL is a cool library and the documentation at the link
> is
>>> informative.
>>>
>>> I tried fxsl-1.2 and installed these necessary files on my webserver:
>>> curry.xsl B iter.xsl B map.xsl B random.xsl B test-random.xsl
>>>
>>> First I realized that it did work on FF3 and not on FF2 (because of the
>>> missing
>>> support of exslt:node-set there). Then I tried it on IE6 and it did not
>>> work first.
>>> After applying below patch it worked under IE6, too.
>>> You may try it out here:
>>>
> http://www.stamm-wilbrandt.de/en/xsl-list/random/fxsl-1.2/test-random.xml
>>>
>>> The output is the same as generated by eg. "xsltproc test-random.xsl
>>> some.xml", but
>>> it is ALWAYS THE SAME output (try it repeatedly).
>>>
>>> I knew of the different techniques in generating pseudo random numbers
> but
>>> what
>>> is really needed is to be able to provide a changing seed (eg.
> initialize
>>> with
>>> the number of seconds since 1/1/1970, time(NULL) in C).
>>>
>>> Then I remembered the generate-id use of Scott, and after reading
> Michaels
>>> last
>>> post the following fragment seems to be an always changing value:
>>> http://www.stamm-wilbrandt.de/en/xsl-list/random/scott.xml
>>>
>>> B  B  B  B <xsl:variable name="seed"><a/></xsl:variable>
>>> B  B  B  B <xsl:value-of select="generate-id(exsl:node-set($seed))" />
>>>
>>> Now these values look different for different browsers, and need to
>>> "somehow"
>>> be converted to a seed value for FXSLs random generator.
>>>
>>> Ideas?
>>>
>>>
>>>
>
=============================================================================
>
>>> from "
> http://dpcarlisle.blogspot.com/2007/05/exslt-node-set-function.html";
>>> $ diff random.xsl.orig random.xsl
>>> 20c20,21
>>> < B exclude-result-prefixes="xsl ext randScale myRandNext
>>> mySingleRandDistFun x"
>>> ---
>>>> B xmlns:msxsl="urn:schemas-microsoft-com:xslt"
>>>> B exclude-result-prefixes="xsl ext msxsl randScale myRandNext
>>> mySingleRandDistFun x".
>>> 30a32,36
>>>> B  <msxsl:script language="JScript" implements-prefix="ext">
>>>> B  B  this['node-set'] = B function (x) {
>>>> B  B  B  return x;
>>>> B  B  }
>>>> B  </msxsl:script>
>>> $
>>>
>>>
>>>
>>> Mit besten GrC<Cen / Best wishes,
>>>
>>> Hermann Stamm-Wilbrandt
>>> Developer, XML Compiler
>>> WebSphere DataPower SOA Appliances
>>> ----------------------------------------------------------------------
>>> IBM Deutschland Research & Development GmbH
>>> Vorsitzender des Aufsichtsrats: Martin Jetter
>>> GeschC$ftsfC<hrung: Erich Baier
>>> Sitz der Gesellschaft: BC6blingen
>>> Registergericht: Amtsgericht Stuttgart, HRB 243294
>>>
>>>
>>>
>>> B  B  B  B  B  B  Dimitre Novatchev
>>> B  B  B  B  B  B  <dnovatchev@gmail
>>> B  B  B  B  B  B  .com>
> To
>>> B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B 
xsl-list@xxxxxxxxxxxxxxxxxxxxxx
>>> B  B  B  B  B  B  07/24/2009 11:00
> cc
>>> B  B  B  B  B  B  PM
>>>
> Subject
>>> B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  B  Re: [xsl] Re:
question on random
>>> B  B  B  B  B  B  Please respond to B  B  B  B  numbers for browser XSLT
>>> B  B  B  B  B  B  xsl-list@xxxxxxxx
>>> B  B  B  B  B  B  B lberrytech.com
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>> If you have decided to go with a service providing random numbers then
>>>> xslt-ish way (set based) to do it would be a service receiving a number
>>> and
>>>> returning an xml with a specified number of random numbers.
>>>>
>>>
>>> Using a service to provide a random sequence is much more unreliable
>>> and inefficient than just doing this in pure XSLT, as this has been
>>> done by FXSL for many years:
>>>
>>>
>>>
>
http://fxsl.sourceforge.net/articles/Random/Casting%20the%20Dice%20with%20FXS
L-htm.htm
>
>>>
>>>
>>>
>>> --
>>> 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
>>> -------------------------------------
>>> You've achieved success in your field when you don't know whether what
>>> you're doing is work or play
>>>
>>>
>>>
>>> On Fri, Jul 24, 2009 at 1:48 PM, Vladimir
>>> Nesterovsky<vladimir@xxxxxxxxxxxxxxxxxxxx> wrote:
>>>> If you have decided to go with a service providing random numbers then
>>>> xslt-ish way (set based) to do it would be a service receiving a number
>>> and
>>>> returning an xml with a specified number of random numbers.
>>>> --
>>>> Vladimir Nesterovsky
>>>> http://www.nesterovsky-bros.com/
>>>>
>>>>
>>>>> To Ben:
>>>>> The cache-append idea was my first thought, but I couldn't think of a
>>>>
>>>> good
>>>>>
>>>>> way to pull together how to have each request be unique. It's possible
>>>>> using node-set(), though:
>>>>> ...
>>>>> ...
>>>>> B  B <xsl:choose>
>>>>> B  B  B <xsl:when test="function-available('exsl:node-set')">
>>>>> B  B  B  B <xsl:value-of select="document(concat('/cgi-bin/rand.pl?',
>>>>
>>>> $scale,
>>>>>
>>>>> '&amp;x=', generate-id(exsl:node-set($seed))))" />
>>>>> B  B  B </xsl:when>
>>>>> B  B  B <xsl:when test="function-available('msxsl:node-set')">
>>>>> B  B  B  B <xsl:value-of select="document(concat('/cgi-bin/rand.pl?',
>>>>
>>>> $scale,
>>>>>
>>>>> '&amp;x=', generate-id(msxsl:node-set($seed))))" />
>>>>> B  B  B </xsl:when>
>>>>> ...
>>>>
>>>> I tried your solution and after replacing '&amp;x=' with '+' it
> directly
>>>> worked on my local web server!
>>>> (I did not know that generate-id works in a browser)
>>>>
>>>> But as already posted it did not work after installed on my real
>>> webserver
>>>> because that does not have enough power to handle the six document
> opens.
>>>>
>>>> Btw, I really like the solution of David Carlisle to provide
>>> exslt:node-set
>>>> for IE browsers (and not having to deal with exslt/msxml):
>>>> http://dpcarlisle.blogspot.com/2007/05/exslt-node-set-function.html
>>>
>>>
>>
>>
>>
>> --
>> 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
>> -------------------------------------
>> You've achieved success in your field when you don't know whether what
>> you're doing is work or play
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Re: [xsl] Re: question on random nu, Hermann Stamm-Wilbra Thread RE: [xsl] question on random number, Michael Kay
Re: [xsl] question on random number, Martin Honnen Date [xsl] XSL Transformation for XML to, christ_c
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