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POFlatten nodes that have repeated child node using XSLT
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  1. POFlatten nodes that have repeated child node using XSLT
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    copied!<p>I have a document of following structure (this is just an example to help me verbalize the problem), that I'm trying to flatten. By flattening I mean copying all the <code>&lt;Report_Entry&gt;</code> nodes with several <code>&lt;Event&gt;</code>s so that each <code>&lt;Report_Entry&gt;</code> node contained just a single <code>&lt;Event&gt;</code></p> <p>What I have:</p> <pre><code>&lt;?xml version="1.0"?&gt; &lt;Report_Data&gt; &lt;Report_Entry&gt; &lt;ID&gt;1&lt;/ID&gt; &lt;Event&gt; &lt;Start_Date&gt;2011-09-06&lt;/Start_Date&gt; &lt;End_Date&gt;2011-09-10&lt;/End_Date&gt; &lt;/Event&gt; &lt;Event&gt; &lt;Start_Date&gt;2011-09-10&lt;/Start_Date&gt; &lt;End_Date&gt;2011-09-15&lt;/End_Date&gt; &lt;/Event&gt; &lt;Event&gt; &lt;Start_Date&gt;2011-09-15&lt;/Start_Date&gt; &lt;End_Date&gt;2011-09-20&lt;/End_Date&gt; &lt;/Event&gt; &lt;/Report_Entry&gt; &lt;Report_Entry&gt; &lt;ID&gt;2&lt;/ID&gt; &lt;Event&gt; &lt;Start_Date&gt;2011-09-20&lt;/Start_Date&gt; &lt;End_Date&gt;2011-09-25&lt;/End_Date&gt; &lt;/Event&gt; &lt;Event&gt; &lt;Start_Date&gt;2011-09-25&lt;/Start_Date&gt; &lt;End_Date&gt;2011-09-30&lt;/End_Date&gt; &lt;/Event&gt; &lt;/Report_Entry&gt; &lt;Report_Entry&gt; &lt;ID&gt;3&lt;/ID&gt; &lt;Event&gt; &lt;Start_Date&gt;2011-09-30&lt;/Start_Date&gt; &lt;End_Date&gt;2011-10-05&lt;/End_Date&gt; &lt;/Event&gt; &lt;/Report_Entry&gt; &lt;/Report_Data&gt; </code></pre> <p>What I'm trying to get:</p> <pre><code>&lt;?xml version="1.0"?&gt; &lt;Report_Data&gt; &lt;Report_Entry&gt; &lt;ID&gt;1&lt;/ID&gt; &lt;Event&gt; &lt;Start_Date&gt;2011-09-06&lt;/Start_Date&gt; &lt;End_Date&gt;2011-09-10&lt;/End_Date&gt; &lt;/Event&gt; &lt;/Report_Entry&gt; &lt;Report_Entry&gt; &lt;ID&gt;1&lt;/ID&gt; &lt;Event&gt; &lt;Start_Date&gt;2011-09-10&lt;/Start_Date&gt; &lt;End_Date&gt;2011-09-15&lt;/End_Date&gt; &lt;/Event&gt; &lt;/Report_Entry&gt; &lt;Report_Entry&gt; &lt;ID&gt;1&lt;/ID&gt; &lt;Event&gt; &lt;Start_Date&gt;2011-09-15&lt;/Start_Date&gt; &lt;End_Date&gt;2011-09-20&lt;/End_Date&gt; &lt;/Event&gt; &lt;/Report_Entry&gt; &lt;Report_Entry&gt; &lt;ID&gt;2&lt;/ID&gt; &lt;Event&gt; &lt;Start_Date&gt;2011-09-20&lt;/Start_Date&gt; &lt;End_Date&gt;2011-09-25&lt;/End_Date&gt; &lt;/Event&gt; &lt;/Report_Entry&gt; &lt;Report_Entry&gt; &lt;ID&gt;2&lt;/ID&gt; &lt;Event&gt; &lt;Start_Date&gt;2011-09-25&lt;/Start_Date&gt; &lt;End_Date&gt;2011-09-30&lt;/End_Date&gt; &lt;/Event&gt; &lt;/Report_Entry&gt; &lt;Report_Entry&gt; &lt;ID&gt;3&lt;/ID&gt; &lt;Event&gt; &lt;Start_Date&gt;2011-09-30&lt;/Start_Date&gt; &lt;End_Date&gt;2011-10-05&lt;/End_Date&gt; &lt;/Event&gt; &lt;/Report_Entry&gt; &lt;/Report_Data&gt; </code></pre> <p>Here is XSLT that I'm using:</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"&gt; &lt;xsl:template match="node() | @*"&gt; &lt;xsl:copy&gt; &lt;xsl:apply-templates select="node() | @*"/&gt; &lt;/xsl:copy&gt; &lt;/xsl:template&gt; &lt;xsl:template match="Report_Entry"&gt; &lt;xsl:for-each select="Event"&gt; &lt;Report_Entry&gt; &lt;xsl:copy-of select="../*[not(self::Event)]"/&gt; &lt;xsl:copy-of select="."/&gt; &lt;/Report_Entry&gt; &lt;/xsl:for-each&gt; &lt;/xsl:template&gt; &lt;/xsl:stylesheet&gt; </code></pre> <p>It works, though I feel that there might be a better, faster and more universal solution. In particular, I don't like "hardcoding" <code>&lt;Report_Entry&gt;</code> since this way I wouldn't be able to copy its attributes (if any). Are there other ways/templates to deal with this problem? </p>
 

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