Subject: [xsl] Using XPath to match two node levels with the same name From: "Mark Peters" <flickrmeister@xxxxxxxxx> Date: Mon, 7 Aug 2006 08:52:30 -0400 |
I'm trying to split a set of nested <topic> elements into separate XML files using the Xalan redirect extension. My input XML document could contain as many as four levels of <topic> elements, with <topic> being the root-level node. My plan is to split the root-level <topic> into its own file (without including any child <topic>s). The first level of child <topic>s would also get their own files. This set of files would include any nested <topic> elements.
My plan is to split a chapter of technical documentation containing nested topics into a separate files containing the chapter-level (overview) topic file and the major heading topics.
Can I match the two desired levels of <topic> elements using XPath? I'm guessing I could use match="root" to express the top (chapter-level) node. But I'm having some trouble wrapping my mind around the XPath processing flow ("contains"? "ancestor"? "following-sibling"?) to formulate a match for my highest child <topic> elements.
<topic id="1"> <title>Root level</title> <prolog/> <body> <p>This is the root-level topic.</p> </body> <topic id="2a"> <title>Child level 2a</title> <prolog/> <body> <p>This is child level 2a.</p> </body> <topic id="3a"> <title>Child level 3a</title> <prolog/> <body> <p>This is child level 3a.</p> </body> </topic> </topic> <topic id="2b"> <title>Child level 2b</title> <prolog/> <body> <p>This is child level 2b.</p> </body> <topic id="3b"> <title>Child level 3b</title> <prolog/> <body> <p>This is child level 3b.</p> </body> </topic> <topic id="3c"> <title>Child level 3c</title> <prolog/> <body> <p>This is child level 3c.</p> </body> </topic> </topic> </topic>
<topic id="1"> <title>Root level</title> <prolog/> <body> <p>This is the root-level topic.</p> </body> </topic>
<topic id="2a"> <title>Child level 2a</title> <prolog/> <body> <p>This is child level 2a.</p> </body> <topic id="3a"> <title>Child level 3a</title> <prolog/> <body> <p>This is child level 3a.</p> </body> </topic> </topic>
<topic id="2b"> <title>Child level 2b</title> <prolog/> <body> <p>This is child level 2b.</p> </body> <topic id="3b"> <title>Child level 3b</title> <prolog/> <body> <p>This is child level 3b.</p> </body> </topic> <topic id="3c"> <title>Child level 3c</title> <prolog/> <body> <p>This is child level 3c.</p> </body> </topic> </topic>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:redirect="http://xml.apache.org/xalan/redirect" extension-element-prefixes="redirect" version="1.0"> <xsl:output method="xml"/>
<xsl:template match="/"> <xsl:apply-templates/> </xsl:template>
<xsl:template match="root"> <xsl:variable name="filename" select="concat(@id,'.xml')"/> <redirect:write select="$filename"> <topic id="{@id}"> <xsl:apply-templates/> </topic> </redirect:write> </xsl:template>
<xsl:template match="topic[???]"> <xsl:variable name="filename" select="concat(@id,'.xml')"/> <redirect:write select="$filename"> <topic id="{@id}"> <xsl:apply-templates/> </topic> </redirect:write> </xsl:template> <xsl:template match="title"> <xsl:copy-of select="."/> </xsl:template> <xsl:template match="prolog"> <xsl:copy-of select="."/> </xsl:template> <xsl:template match="body"> <xsl:copy-of select="."/> </xsl:template> </xsl:stylesheet>
Regards, Mark
Mark Peters Senior Technical Writer Saba Software
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