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Posted to j-users@xalan.apache.org by "Hall, Kurt (Truven Health)" <ku...@truvenhealth.com> on 2013/10/15 20:48:03 UTC
bug(?) when reusing a xsl:key across multiple templates
I suspect that I have found a bug pertaining to multiple key() function calls that share a common xsl:key but occur in different templates. Both key() calls are operating on results-tree-fragments that I've turned into nodesets with the xalan:nodeset() extension.
When the calls are in different templates the second occurance of key() doesn't return any results. If I combine template1 and template2 into a single template then I get correct results for both key() calls. I have worked around the issue by cloning the xsl:key (key2) and no longer reusing them.
I'm using Xalan 2.7.1.
Results
====== Template 1 ======
count(tree1)=2
N1=1
N2=2
N3=3
====== Template 2 ======
count(tree2)=3
Test Code:
===============================================================
<?xml version="1.0" encoding = "ISO-8859-1"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:xalan="http://xml.apache.org/xalan" exclude-result-prefixes="xalan">
<xsl:key name="key1" match="*" use="text()"/>
<xsl:key name="key2" match="*" use="text()"/>
<xsl:template match="/">
<xsl:call-template name="template1"/>
<xsl:call-template name="template2"/>
<xsl:call-template name="template3"/>
</xsl:template>
<xsl:template name="template1">
<xsl:message>====== Template 1 ======</xsl:message>
<xsl:variable name="rtf1"><N1>1</N1><N2>2</N2></xsl:variable>
<xsl:variable name="tree1" select="xalan:nodeset( $rtf1)"/>
<xsl:message>count(tree1)=<xsl:value-of select="count( $tree1/*)"/></xsl:message>
<xsl:variable name="uniqNodes" select="$tree1/*[generate-id() = generate-id( key( 'key1', text()))]"/>
<xsl:for-each select="$uniqNodes">
<xsl:message><xsl:value-of select="local-name()"/>=<xsl:value-of select="text()"/></xsl:message>
</xsl:for-each>
</xsl:template>
<xsl:template name="template2">
<xsl:message>====== Template 2 ======</xsl:message>
<xsl:variable name="rtf2"><N4>4</N4><N5>5</N5><N6>6</N6></xsl:variable>
<xsl:variable name="tree2" select="xalan:nodeset( $rtf2)"/>
<xsl:message>count(tree2)=<xsl:value-of select="count( $tree2/*)"/></xsl:message>
<!-- ************ CHANGE FOLLOWING FROM key1 to key2 ************* -->
<xsl:variable name="uniqNodes" select="$tree2/*[generate-id() = generate-id( key( 'key1', text()))]"/>
<!-- ************************************************************** -->
<xsl:for-each select="$uniqNodes">
<xsl:message><xsl:value-of select="local-name()"/>=<xsl:value-of select="text()"/></xsl:message>
</xsl:for-each>
</xsl:template>
</xsl:stylesheet>
===============================================================
Thanks for any help,
-kurt
(This is my first post to the user-group so forgive me if I'm not following proper protocol)
Kurt Hall
Principal Engineer
Truven Health Analytics
Phone: 303-486-9161
kurt.hall@truvenhealth.com
truvenhealth.com
The Healthcare Business of Thomson Reuters is now
Truven Health Analytics.
Re: bug(?) when reusing a xsl:key across multiple templates
Posted by Mukul Gandhi <ga...@gmail.com>.
I feel this is not a bug. My reading of XSLT 1.0 spec says, that a xsl:key
declaration (or a set of them) within a stylesheet are applicable only to
one document.
Two different nodesets (constructed from a RTF) are conceptually two
different documents, therefore as per above notion they cannot share
xsl:key declarations.
On Wed, Oct 16, 2013 at 12:18 AM, Hall, Kurt (Truven Health) <
kurt.hall@truvenhealth.com> wrote:
> I suspect that I have found a bug pertaining to multiple key() function
> calls that share a common xsl:key but occur in different templates. Both
> key() calls are operating on results-tree-fragments that I’ve turned into
> nodesets with the xalan:nodeset() extension.****
>
> ** **
>
> When the calls are in different templates the second occurance of key()
> doesn’t return any results. If I combine template1 and template2 into a
> single template then I get correct results for both key() calls. I have
> worked around the issue by cloning the xsl:key (key2) and no longer reusing
> them.****
>
> ** **
>
> I’m using Xalan 2.7.1. ****
>
> ** **
>
> *Results*
>
> ====== Template 1 ======****
>
> count(tree1)=2****
>
> N1=1****
>
> N2=2****
>
> N3=3****
>
> ====== Template 2 ======****
>
> count(tree2)=3****
>
> ** **
>
> ** **
>
> Test Code:****
>
> ===============================================================****
>
> <?xml version="1.0" encoding = "ISO-8859-1"?>****
>
> <xsl:stylesheet version="1.0" xmlns:xsl="
> http://www.w3.org/1999/XSL/Transform" xmlns:xalan="
> http://xml.apache.org/xalan" exclude-result-prefixes="xalan"> ****
>
> ** **
>
> <xsl:key name="key1" match="*" use="text()"/>****
>
> <xsl:key name="key2" match="*" use="text()"/>****
>
> ** **
>
> <xsl:template match="/">****
>
> <xsl:call-template name="template1"/>****
>
> <xsl:call-template name="template2"/>****
>
> <xsl:call-template name="template3"/>****
>
> </xsl:template>****
>
> ** **
>
> <xsl:template name="template1">****
>
> <xsl:message>====== Template 1 ======</xsl:message>****
>
> <xsl:variable name="rtf1"><N1>1</N1><N2>2</N2></xsl:variable>****
>
> <xsl:variable name="tree1" select="xalan:nodeset( $rtf1)"/>****
>
> <xsl:message>count(tree1)=<xsl:value-of select="count(
> $tree1/*)"/></xsl:message>****
>
> <xsl:variable name="uniqNodes" select="$tree1/*[generate-id() =
> generate-id( key( 'key1', text()))]"/>****
>
> <xsl:for-each select="$uniqNodes">****
>
> <xsl:message><xsl:value-of select="local-name()"/>=<xsl:value-of
> select="text()"/></xsl:message>****
>
> </xsl:for-each>****
>
> </xsl:template>****
>
> ** **
>
> <xsl:template name="template2">****
>
> <xsl:message>====== Template 2 ======</xsl:message>****
>
> <xsl:variable
> name="rtf2"><N4>4</N4><N5>5</N5><N6>6</N6></xsl:variable>****
>
> <xsl:variable name="tree2" select="xalan:nodeset( $rtf2)"/>****
>
> <xsl:message>count(tree2)=<xsl:value-of select="count(
> $tree2/*)"/></xsl:message>****
>
> <!-- ************ CHANGE FOLLOWING FROM key1 to key2 *************
> -->****
>
> <xsl:variable name="uniqNodes" select="$tree2/*[generate-id() =
> generate-id( key( 'key1', text()))]"/>****
>
> <!-- **************************************************************
> -->****
>
> <xsl:for-each select="$uniqNodes">****
>
> <xsl:message><xsl:value-of select="local-name()"/>=<xsl:value-of
> select="text()"/></xsl:message>****
>
> </xsl:for-each>****
>
> </xsl:template>****
>
> ** **
>
> </xsl:stylesheet>****
>
> ===============================================================****
>
> ** **
>
> Thanks for any help,****
>
> -kurt****
>
> (This is my first post to the user-group so forgive me if I’m not
> following proper protocol)****
>
> ** **
>
> ** **
>
>
> *Kurt Hall*
> Principal Engineer****
>
> *Truven Health Analytics*
>
> Phone: 303-486-9161****
>
> kurt.hall@truvenhealth.com
> truvenhealth.com****
>
> The Healthcare Business of Thomson Reuters is now
> Truven Health Analytics. ****
>
> ** **
>
--
Regards,
Mukul Gandhi