Problem with CachedXPathAPI

[Mattias Bogeblad <ma...@sprawlsolutions.se>]

Hi all,

We have a very XPATH-intense application and the performance is to bad using
the ordinary XPATH-api in Xalan.
We switched and started using the CachedXPathAPI and the performance is
great.

Example use:
NodeList anl = cachedXPathAPI.selectNodeList(document.getDocumentElement(),
attributesXPath);

We have had no problems in our development environment but when we deploy to
the server we sometimes get the following error:

SEVERE  Wed May 21 16:42:07 CEST 2003An error occurred during the update of
the Xpath:java.lang.ArrayIndexOutOfBoundsException: -1
SEVERE  Wed May 21 16:42:07 CEST
2003java.lang.ArrayIndexOutOfBoundsException: -1
	at
org.apache.xpath.XPathContext.pushCurrentNode(XPathContext.java:767)
	at
org.apache.xpath.axes.PredicatedNodeTest.acceptNode(PredicatedNodeTest.java:
427)
	at org.apache.xpath.axes.AxesWalker.nextNode(AxesWalker.java:392)
	at
org.apache.xpath.axes.WalkingIterator.nextNode(WalkingIterator.java:182)
	at
org.apache.xpath.axes.LocPathIterator.runTo(LocPathIterator.java:802)
	at org.apache.xml.dtm.ref.DTMNodeList.<init>(DTMNodeList.java:114)
	at org.apache.xpath.objects.XNodeSet.nodelist(XNodeSet.java:384)
	at
org.apache.xpath.CachedXPathAPI.selectNodeList(CachedXPathAPI.java:258)
	at
org.apache.xpath.CachedXPathAPI.selectNodeList(CachedXPathAPI.java:235)
	at
se.sprawlsolutions.qm.controllers.QuestionnaireTemplateController.updateXPat
hValue(QuestionnaireTemplateController.java:637)
			

Have any of you experienced this or have any idea of what it can be? Is it
possible the JDK we run 1.4.1_02 can interfere with the Xalan we have
deployed in our app? 

Regards
Mattias Bogeblad


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Mattias Bogeblad  |  PH: +46 31 799 01 16  |  MOB: +46 702 80 05 05
SPRAWL SOLUTIONS AB 
FABRIKSGATAN 7 
412 50 GÖTEBORG 
FAX: +46 31 799 00 10 
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