OASIS Mailing List ArchivesView the OASIS mailing list archive below
or browse/search using MarkMail.


Help: OASIS Mailing Lists Help | MarkMail Help

[Date Prev] | [Thread Prev] | [Thread Next] | [Date Next] -- [Date Index] | [Thread Index]
Re: [xml-dev] Rick Jelliffe's article on XSLT 1.0 performance

On 15/02/2017 10:20, Tony Graham wrote:
On 15/02/2017 09:57, Rick Jelliffe wrote:
For Schematron I am still not sure whether it would be better to have

<sch:rule context="person">
   <sch:let name="payrate"  value="//rate[$for = current()/@class]"


<sch:rule context="person">
   <sch:let name="payrate"  value="//rate[$for = current()/@class]"  />

  <sch:assert tes"number(payrate)" >The payrate should be a
Presumably the second form is 'better' Schematron because it has a
human-readable message. The separate test also means that you can do
things like have separate messages if a value that should be an integer
is a number but not an integer or is not a number at all.
Despite that, there's still use for sch:let/@as.

focheck [1] has hundreds of:

      <let name="expression" value="ahf:parser-runner(.)"/>

where ahf:parser-runner() is:

<!-- ahf:parser-runner($input as xs:string) as element()+ -->
<!-- Runs the REx-generated parser on $input then reduces the parse
     tree to a XSL 1.1 datatype.  Uses @saxon:memo-function extension
     to memorize return values (when used with Saxon PE or Saxon EE)
     to avoid reparsing the same strings again and again when this is
     used as part of validating an entire XSL-FO document. -->
<xsl:function name="ahf:parser-runner" as="element()+"
              xmlns:saxon="http://saxon.sf.net/"; >
  <xsl:param name="input" as="xs:string" />


The result from 'ahf:parser-runner(.)' will only ever be 'element()+',
but this makes focheck run that tiny bit faster, then I'm all for it:

      <let name="expression" value="ahf:parser-runner(.)" as="element()+"/>


Tony Graham.
Senior Architect
XML Division
Antenna House, Inc.
Skerries, Ireland

[1] https://github.com/AntennaHouse/focheck

[Date Prev] | [Thread Prev] | [Thread Next] | [Date Next] -- [Date Index] | [Thread Index]

News | XML in Industry | Calendar | XML Registry
Marketplace | Resources | MyXML.org | Sponsors | Privacy Statement

Copyright 1993-2007 XML.org. This site is hosted by OASIS