RE: [xsl] comparing a part of the XML tree

["Michael Kay" <mike@xxxxxxxxxxxx>]

deep-equal() is an XSLT 2.0 / XPath 2.0 function, you're trying to use it
with Xalan which only implements 1.0.

Michael Kay
http://www.saxonica.com/ 

> -----Original Message-----
> From: Jethro Borsje [mailto:jethro@xxxxxxxxxxxx] 
> Sent: 16 July 2007 09:45
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: Re: [xsl] comparing a part of the XML tree
> 
> >> I want to match the nodes *inside* the <selection> node 
> against the 
> >> nodes *inside* the original node.
> > 
> > deep-equal(selection/node(),$original/node())
> > 
> Alright, that sounds logical. I assume that in this case 
> $original is a variable that refers to the <original> element 
> in the input XML file?
> 
> I constantly get an error like this when trying to use the deep-equal
> function:
> [error]
> ERROR:  'Error checking type of the expression 
> 'funcall(deep-equal, 
> [ParentLocationPath(ParentLocationPath(step("child", 14), 
> step("child", 15)), step("child", -1)), 
> ParentLocationPath(ParentLocationPath(step("child", 14), 
> step("child", 15)), step("child", -1))])'.'
> FATAL ERROR:  'Could not compile stylesheet'
> Error creating transformer
> javax.xml.transform.TransformerConfigurationException: Could 
> not compile stylesheet
> 	at
> com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactor
> yImpl.newTemplates(TransformerFactoryImpl.java:824)
> 	at
> com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactor
> yImpl.newTransformer(TransformerFactoryImpl.java:613)
> 	at Main.getTransformer(Main.java:128)
> 	at Main.compare(Main.java:70)
> 	at Main.<init>(Main.java:44)
> 	at Main.main(Main.java:53)
> ------------------------------------
> Parsing body[<compare><selection><z color="blue" 
> flavor="vanilla">testje</z></selection><original><e><x color="red" 
> flavor="chocolate">testje 2</x><z color="blue" 
> flavor="vanilla">testje</z></e></original></compare>]
> Exception in thread "main" java.lang.NullPointerException
> 	at Main.compare(Main.java:79)
> 	at Main.<init>(Main.java:44)
> 	at Main.main(Main.java:53)
> [/error]
> 
> This is my stylesheet:
> [stylesheet]
> <?xml version="1.0" encoding="ISO-8859-1"?> <xsl:stylesheet 
> version="2.0"
> 	xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
> 
> 	<xsl:template match="/">
> 		<xsl:choose>
> 			<xsl:when 
> test="deep-equal(compare/selection/node(),
> compare/selection/node())">true</xsl:when>
> 			<xsl:otherwise>false</xsl:otherwise>
> 		</xsl:choose>
> 	</xsl:template>
> </xsl:stylesheet>
> [/stylesheet]
> As you can see I am trying to compare the node inside the 
> selection element to itself, just to check if everything is working.
> 
> This is the input:
> [input]
> <compare>
> <selection>
> 	<z color="blue" flavor="vanilla">testje</z> 
> </selection> <original>
> 	<e>
> 		<x color="red" flavor="chocolate">testje 2</x>
> 		<z color="blue" flavor="vanilla">testje</z>
> 	</e>
> </original>
> </compare>
> [/input]
> 
> --
> Best regards,
> Jethro Borsje
> 
> http://www.jborsje.nl