Re: Stacktrace when trying to use XPath

Ok, I reluctantly added jaxen 1.1.1 to the classpath and also turned on NodeModel.useJaxenXPathSupport() and it is working nicely now.  =)

I first tried changing the xalan version to 2.7.1 but still no luck.  If anyone knows why this is happening and can advise so I can get rid of jaxen it would be great.  If not it's no big deal, I'm just curious as to why it won't work.

Thanks,
John

From: Newman, John W [mailto:[email protected]]
Sent: Thursday, September 03, 2009 10:13 AM
To: FreeMarker-user
Subject: [FreeMarker-user] Stacktrace when trying to use XPath

Hello,

We have instances of org.w3c.dom.Element in the data model.  I can use simple expressions like element.Child or element.@ID etc and all is working fine.  But if I try to use xpath, i.e. element["count(.//Child[./@flag=1])"] .. I get this stack trace everytime:

java.lang.RuntimeException: Could not resolve the node to a handle
  at org.apache.xml.dtm.ref.DTMManagerDefault.getDTMHandleFromNode(DTMManagerDefault.java:556)
  at org.apache.xpath.XPathContext.getDTMHandleFromNode(XPathContext.java:154)
  at freemarker.ext.dom.XalanXPathSupport.executeQuery(XalanXPathSupport.java:108)
  at freemarker.ext.dom.NodeModel.get(NodeModel.java:279)
  at freemarker.ext.dom.ElementModel.get(ElementModel.java:130)
  at freemarker.core.DynamicKeyName.dealWithStringKey(DynamicKeyName.java:136)

Looking around a bit I've seen one other person with this error message (not using freemarker), and it was due to the com.sun xalan being used.  You can see by the trace that we are using the real apache xalan, xalan-2.6.0.jar is on the classpath.  Is that the wrong version?  Any ideas what's happening and how I can fix this so we can use xpath?

Thanks,
John
...

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