[XSL-LIST Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Re: [xslt transform & grouping] Using the Muenchia
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I think that we're going back and forth here. when this line is used: <xsl:param name="filter" select="'food'"></xsl:param> this error is generated: "Exception Details: System.NullReferenceException: Object reference not set to an instance of an object." but when i use <xsl:param name="filter" select="food"></xsl:param> there is no error. OK ? Now, When everything works without errors, generated XML output is: <Documents></Documents> instead of the required elements. THat is, some expression must be wrong. Could you do following, please, and give me your result of the output file. If your output generates only <Documents></Documents>, could you see how to make it generate the filtered elements instead? Use this XSLT to genterate new XML file by using specified XML input file: XSLT: <?xml version="1.0" encoding="UTF-8"?> <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> <xsl:output method="xml" version="1.0" encoding="utf-8" indent="yes"/> <xsl:param name="filter" select="food"></xsl:param> <xsl:template match="Documents"> <xsl:apply-templates select="*[@filter=$filter]"/> <Documents> <xsl:for-each select="Document[@filter=$filter]/Article[count(.|key('by-info',@info)[1])=1]"> <Document name="{@info}"> <xsl:copy-of select="key('by-info',@info)[@filter=$filter]"/> </Document> </xsl:for-each> </Documents> </xsl:template> </xsl:stylesheet> INPUT XML: <?xml version="1.0" encoding="utf-8"?> <Documents> <Document chapter="1" title="title 1" href="file1.xml" filter="food"> <Article title="1.1" info="sub" filter="food"/> <Article title="1.2" info="main" filter="drink"/> </Document> <Document chapter="2" title="title 2" href="file2.xml" filter="food"> <Article title="2.1" info="sub" filter="drink"/> <Article title="2.2" info="main" filter="food"/> </Document> </Documents> From: David Carlisle <davidc@xxxxxxxxx> _________________________________________________________________ Express yourself instantly with MSN Messenger! Download today - it's FREE! hthttp://messenger.msn.click-url.com/go/onm00200471ave/direct/01/
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