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https://issues.apache.org/jira/browse/XALANC-624?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12464612
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David Bertoni commented on XALANC-624:
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Patch to clean up the whole key retrieval process is attached. Committers, can
you please review?
> The key() function does not work when the context node is the root node of a
> result tree fragment obtained through exsl:node-set()
> ----------------------------------------------------------------------------------------------------------------------------------
>
> Key: XALANC-624
> URL: https://issues.apache.org/jira/browse/XALANC-624
> Project: XalanC
> Issue Type: Bug
> Components: XalanC
> Affects Versions: 1.10
> Environment: winxp-sp2
> Reporter: Alain Le Guennec
> Assigned To: David Bertoni
> Attachments: bug-key.xslt, patch.diff, StylesheetRoot.cpp
>
>
> The key() function does not work when the context node is the root node of a
> result tree fragment obtained through exsl:node-set().
> Consider the following stylesheet (applied to any input document, the actual
> input does not matter):
> <?xml version="1.0" encoding = "ISO-8859-1"?>
> <xsl:stylesheet version="1.0"
> xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
> xmlns:exsl="http://exslt.org/common";>
> <xsl:key name="lookup-by-name" match="*" use="local-name()"/>
> <xsl:variable
> name="test-tree-rtf"><N1><N2><N3></N3></N2></N1></xsl:variable>
> <xsl:variable name="test-tree"
> select="exsl:node-set($test-tree-rtf)/*"/>
> <xsl:template match="/">
> <!-- key() with context within the result tree fragment. -->
> <xsl:for-each select="$test-tree">
> <xsl:for-each select=".">
> <xsl:variable name="n1"
> select="key('lookup-by-name', 'N1')"/>
> <xsl:choose>
> <xsl:when
> test="count($n1)=1"><xsl:message>OK </xsl:message></xsl:when>
> <xsl:otherwise><xsl:message>BUG
> </xsl:message></xsl:otherwise>
> </xsl:choose>
> </xsl:for-each>
> </xsl:for-each>
> <!-- key() with context being the root of the result tree
> fragment. -->
> <xsl:for-each select="$test-tree">
> <xsl:for-each select="/">
> <xsl:variable name="n1"
> select="key('lookup-by-name', 'N1')"/>
> <xsl:choose>
> <xsl:when
> test="count($n1)=1"><xsl:message>OK </xsl:message></xsl:when>
> <xsl:otherwise><xsl:message>BUG
> </xsl:message></xsl:otherwise>
> </xsl:choose>
> </xsl:for-each>
> </xsl:for-each>
> </xsl:template>
> </xsl:stylesheet>
> In the two cases, the key() function should return the N1 node belonging to
> the result tree fragment
> (because the result tree fragment is acting as the "context document" in both
> cases).
> However, it works only in the first case (it prints "OK"), not the second (it
> prints "BUG").
> I could find that the cause of the bug is in the function getKeyNode() of
> StylesheetRoot.cpp.
> This function does not work when the context node is a DOCUMENT_FRAGMENT_NODE
> to start with.
> I rewrote it so that it works in that case too (see attachment).
> Best regards,
> Alain Le Guennec.
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