Re: [office] Extensible IDs

["G. Ken Holman" <gkholman@CraneSoftwrights.com>]

At 2003-07-31 19:57 +0200, Daniel Vogelheim wrote:
>1) namespaced attribute values
>The idea is to use namespace prefixes in attribute values. This is used 
>e.g. in XSD for datatypes.
>
>Example: If the chart namespace has been declared as 
>xmlns:chart=".../chart", then "chart:bar" or "chart:pie" would declare a 
>bar chart of pie chart from the chart namespace. If a default namespace 
>would have been used for the same namespace, i.e. xmlns=".../chart", then 
>"bar" and "pie" would refer to the same to chart types. To add your own, 
>you can declare xmlns:my=".../mine", and then use "mine:superchart" to 
>declare a your new 'superchart' chart type.
>...
>Could anyone come up with XSLT to compare two namespaced attributes, as 
>suggested in 1) ?

Remember that the namespace axis contains nodes whose names are the prefix 
and values are the URI strings.

I hope this helps.

.............. Ken

T:\ftemp>type daniel.xsl
<?xml version="1.0" encoding="iso-8859-1"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                 xmlns:chart="http://www.mycharturi.org"
                 version="1.0">

<xsl:template match="/">
   <xsl:for-each select="/*/test"><xsl:text>
</xsl:text>
     <xsl:value-of select="."/>: <xsl:text/>
     <xsl:for-each select="@val">
       <xsl:choose>
         <xsl:when test="
               contains( ., ':' )
           and ../namespace::*[name(.)=substring-before(current(),':')]=
               document('')/*/namespace::chart
           and substring-after( ., ':' ) = 'this' ">
           <xsl:text>Yes: @val is in the chart namespace</xsl:text>
         </xsl:when>
         <xsl:otherwise>
           <xsl:text>No: @val is not in the chart namespace</xsl:text>
         </xsl:otherwise>
       </xsl:choose>
     </xsl:for-each>
   </xsl:for-each>

   <xsl:for-each select="/*/compare"><xsl:text>
</xsl:text>
     <xsl:value-of select="."/>: <xsl:text/>
     <xsl:choose>
       <xsl:when test="contains(@val1,':') and contains(@val2,':') and
                namespace::*[name(.)=substring-before(current()/@val1,':')]=
                namespace::*[name(.)=substring-before(current()/@val2,':')] and
                substring-after(@val1,':') = substring-after(@val2,':')">
         <xsl:text>Yes: attributes are the same qualified value</xsl:text>
       </xsl:when>
       <xsl:otherwise>
         <xsl:text>No: attributes are not the same qualified value</xsl:text>
       </xsl:otherwise>
     </xsl:choose>
   </xsl:for-each>
</xsl:template>

</xsl:stylesheet>
T:\ftemp>type daniel.xml
<?xml version="1.0" encoding="iso-8859-1"?>
<tests xmlns:look="http://www.mycharturi.org"
        xmlns:lookagain="http://www.mycharturi.org"
        xmlns:other="http://www.otheruri.org">
   <test val="look:this">First pre-determined test</test>
   <test val="this">Second pre-determined test</test>
   <test val="other:this">Third pre-determined test</test>
   <test val="lookagain:this">Fourth pre-determined test</test>
   <compare val1="look:this" val2="other:this">First comp test</compare>
   <compare val1="look:this" val2="lookagain:this">Second comp test</compare>
   <compare val1="look:this" val2="lookagain:that">Third comp test</compare>
</tests>

T:\ftemp>saxon daniel.xml daniel.xsl
<?xml version="1.0" encoding="utf-8"?>
First pre-determined test: Yes: @val is in the chart namespace
Second pre-determined test: No: @val is not in the chart namespace
Third pre-determined test: No: @val is not in the chart namespace
Fourth pre-determined test: Yes: @val is in the chart namespace
First comp test: No: attributes are not the same qualified value
Second comp test: Yes: attributes are the same qualified value
Third comp test: No: attributes are not the same qualified value
T:\ftemp>



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G. Ken Holman                mailto:gkholman@CraneSoftwrights.com
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