atom feed15 messages in com.mulberrytech.lists.xsl-listRe: [xsl] Scope of uniqueness of gene...
FromSent OnAttachments
Vladimir NesterovskyNov 20, 2008 3:41 am 
Colin AdamsNov 20, 2008 3:50 am 
David CarlisleNov 20, 2008 4:01 am 
Michael KayNov 20, 2008 4:03 am 
Vladimir NesterovskyNov 20, 2008 4:50 am 
David CarlisleNov 20, 2008 4:55 am 
David CarlisleNov 20, 2008 4:55 am 
Florent GeorgesNov 20, 2008 4:56 am 
Vyacheslav SedovNov 20, 2008 5:10 am 
David CarlisleNov 20, 2008 5:12 am 
David CarlisleNov 20, 2008 5:16 am 
Florent GeorgesNov 20, 2008 6:03 am 
Vladimir NesterovskyNov 20, 2008 8:52 am 
Michael KayNov 20, 2008 9:05 am 
John SnelsonNov 20, 2008 9:12 am 
Subject:Re: [xsl] Scope of uniqueness of generate-id()
From:Vladimir Nesterovsky (vlad@nesterovsky-bros.com)
Date:Nov 20, 2008 8:52:55 am
List:com.mulberrytech.lists.xsl-list

Until today I was thinking that xslt functions have no side effects (provided extensions are not considered). It has turned out that this is not correct. That changes the picture (at least for me). Many possible optimizations are not safe.

Thanks.

-------- Original Message --------

From: "David Carlisle" <dav@nag.co.uk> Sent: Thursday, November 20, 2008 3:34 PM To: xsl-@lists.mulberrytech.com Subject: Re: [xsl] Scope of uniqueness of generate-id()

Does this mean that theoretically one can create a "generator", function returning different values per each call?

No, two calls with the same node are guaranteed to return the same value.

That's true but what Vladimir meant was this:

<xsl:stylesheet version="2.0" xmlns:f="data:,f" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

<xsl:template name="main">

: <xsl:sequence select="f:fun()"/> : <xsl:sequence select="f:fun()"/> : <xsl:sequence select="f:fun()"/> : <xsl:sequence select="f:fun()"/> : <xsl:sequence select="f:fun()"/> : <xsl:sequence select="f:fun()"/> : <xsl:sequence select="f:fun()"/> </xsl:template>

<xsl:function name="f:fun" as="xs:string"> <xsl:variable name="x">!</xsl:variable> <xsl:sequence select="generate-id($x)"/> </xsl:function>

</xsl:stylesheet>

$ saxon9 -it main gen.xsl <?xml version="1.0" encoding="UTF-8"?>

: tt1 : tt2 : tt3 : tt4 : tt5 : tt6 : tt7

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