[Vtd-xml-users] java.lang.ArrayIndexOutOfBoundsException: 1073741900

[W K <wka...@ho...>]

This is an odd issue, and I am not sure if it is a bug or I am missing something ...

Here is what I am doing:

- Create a VTDNav instance by parsing an xml file
- Store this instance (vn) as a class variable

Method 1: isValidXml() (this function validates a section of the xml)
- I Create AutoPilot instance: new AutoPilot( vn )
- Add namespaces to ap instance
- eval xpath to navigate to an element
- get element via: getElementFragment() and then toRawString()
- add namespaces to root element via VTD-XML, but in a separate method.

Method 2: isValidNames() (this checks element values)
- I create another AutoPilot instance: new AutoPilot( vn )
- Add namespaces to ap instance
- eval xpath to get element values ... this produces the error:

 java.lang.ArrayIndexOutOfBoundsException: 1073741900
at com.ximpleware.UniByteBuffer.byteAt(UniByteBuffer.java:42)
    at com.ximpleware.VTDNav.getChar(VTDNav.java:635)
    at com.ximpleware.VTDNav.compareRawTokenString(VTDNav.java:1996)
    at com.ximpleware.VTDNav.matchRawTokenString(VTDNav.java:1854)
    at com.ximpleware.VTDNav.matchElementNS(VTDNav.java:1832)
    at com.ximpleware.NodeTest.eval(NodeTest.java:63)
    at com.ximpleware.xpath.Step.eval(Step.java:116)
    at com.ximpleware.LocationPathExpr.process_child(LocationPathExpr.java:285)
    at com.ximpleware.LocationPathExpr.evalNodeSet(LocationPathExpr.java:1747)
    at com.ximpleware.UnionExpr.evalNodeSet(UnionExpr.java:105)
    at com.ximpleware.AutoPilot.evalXPath(AutoPilot.java:755)
...


What I do not understand is that IF I do Method 2 before Method 1, no issues.  My question(s) are: 
- Does getElementFragment() change or affect the original VTDNav instance (i.e. similar to adding an attribute, element, etc... the XMLModifier has to be 're-bound')?  
- If so, how can I refresh the VTDNav instance so I am working with the same instance as I started?
- Does transforming that element fragment affect the VTDNav instance? 


Thank you for any help in understanding what I may be doing incorrectly.

WK