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Posted to dev@xalan.apache.org by xa...@xml.apache.org on 2004/09/06 08:31:36 UTC
[jira] Updated: (XALANJ-1628) NullPointerException in TransformerImpl.run() when reusing XMLFilter object
The following issue has been updated:
Updater: Brian Minchau (mailto:minchau@ca.ibm.com)
Date: Sun, 5 Sep 2004 11:30 PM
Changes:
assignee changed from Xalan Developers Mailing List
description changed from Whenever I attempt to re-use an XMLFilter object, I receive the following stack
trace (first use of the XMLFilter was successful, so it doesn't appear to be my
XSL script):
Exception in thread "main" java.lang.RuntimeException:
java.lang.NullPointerException
at
org.apache.xalan.transformer.TransformerImpl.run(TransformerImpl.java:3364)
at
org.apache.xalan.transformer.TransformerHandlerImpl.endDocument(TransformerHandlerImpl.java:427)
at org.apache.xerces.parsers.AbstractSAXParser.endDocument(Unknown Source)
at org.apache.xerces.impl.XMLDocumentScannerImpl.endEntity(Unknown Source)
at org.apache.xerces.impl.XMLEntityManager.endEntity(Unknown Source)
at org.apache.xerces.impl.XMLEntityScanner.load(Unknown Source)
at org.apache.xerces.impl.XMLEntityScanner.skipSpaces(Unknown Source)
at
org.apache.xerces.impl.XMLDocumentScannerImpl$TrailingMiscDispatcher.dispatch(Unknown
Source)
at
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at org.apache.xalan.transformer.TrAXFilter.parse(TrAXFilter.java:191)
at org.apache.xalan.transformer.TrAXFilter.parse(TrAXFilter.java:191)
at transform.Transform.doTransform(Transform.java:298)
at transform.Transform.doTransform(Transform.java:279)
at transform.Transform.main(Transform.java:204)
I traced this to the following line in TransformerImpl.applyTemplateToNode():
DTM dtm = m_xcontext.getDTM(child);
This appears to be returning null when the XMLFilter object is being used for
the second time. If I comment out the:
m_xcontext.reset();
line in TransformerImpl.reset(), then the problem seems to be resolved, and I am
able to re-use the same XMLFilter object many times.
I have seem a few other items out on Google speaking of the same issue, and one
poster stated he had this problem even with a simple modification to the
UseXMLFilters sample to run the parse() in a loop; so this should be very easy
to reproduce. If not, let me know, and I can pass on my code. to Whenever I attempt to re-use an XMLFilter object, I receive the following stack
trace (first use of the XMLFilter was successful, so it doesn't appear to be my
XSL script):
Exception in thread "main" java.lang.RuntimeException:
java.lang.NullPointerException
at
org.apache.xalan.transformer.TransformerImpl.run(TransformerImpl.java:3364)
at
org.apache.xalan.transformer.TransformerHandlerImpl.endDocument(TransformerHandlerImpl.java:427)
at org.apache.xerces.parsers.AbstractSAXParser.endDocument(Unknown Source)
at org.apache.xerces.impl.XMLDocumentScannerImpl.endEntity(Unknown Source)
at org.apache.xerces.impl.XMLEntityManager.endEntity(Unknown Source)
at org.apache.xerces.impl.XMLEntityScanner.load(Unknown Source)
at org.apache.xerces.impl.XMLEntityScanner.skipSpaces(Unknown Source)
at
org.apache.xerces.impl.XMLDocumentScannerImpl$TrailingMiscDispatcher.dispatch(Unknown
Source)
at
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at org.apache.xalan.transformer.TrAXFilter.parse(TrAXFilter.java:191)
at org.apache.xalan.transformer.TrAXFilter.parse(TrAXFilter.java:191)
at transform.Transform.doTransform(Transform.java:298)
at transform.Transform.doTransform(Transform.java:279)
at transform.Transform.main(Transform.java:204)
I traced this to the following line in TransformerImpl.applyTemplateToNode():
DTM dtm = m_xcontext.getDTM(child);
This appears to be returning null when the XMLFilter object is being used for
the second time. If I comment out the:
m_xcontext.reset();
line in TransformerImpl.reset(), then the problem seems to be resolved, and I am
able to re-use the same XMLFilter object many times.
I have seem a few other items out on Google speaking of the same issue, and one
poster stated he had this problem even with a simple modification to the
UseXMLFilters sample to run the parse() in a loop; so this should be very easy
to reproduce. If not, let me know, and I can pass on my code.
environment changed from Operating System: Windows NT/2K
Platform: PC to Operating System: Windows NT/2K
Platform: PC
priority changed to Blocker
Component changed to SAX
Component changed from Xalan-interpretive transformation
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For a full history of the issue, see:
http://issues.apache.org/jira/browse/XALANJ-1628?page=history
---------------------------------------------------------------------
View the issue:
http://issues.apache.org/jira/browse/XALANJ-1628
Here is an overview of the issue:
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Key: XALANJ-1628
Summary: NullPointerException in TransformerImpl.run() when reusing XMLFilter object
Type: Bug
Status: Unassigned
Priority: Blocker
Project: XalanJ2
Components:
SAX
Versions:
2.5Dx
Assignee:
Reporter: Gretchen Chiaramonte
Created: Thu, 7 Aug 2003 1:46 PM
Updated: Sun, 5 Sep 2004 11:30 PM
Environment: Operating System: Windows NT/2K
Platform: PC
Description:
Whenever I attempt to re-use an XMLFilter object, I receive the following stack
trace (first use of the XMLFilter was successful, so it doesn't appear to be my
XSL script):
Exception in thread "main" java.lang.RuntimeException:
java.lang.NullPointerException
at
org.apache.xalan.transformer.TransformerImpl.run(TransformerImpl.java:3364)
at
org.apache.xalan.transformer.TransformerHandlerImpl.endDocument(TransformerHandlerImpl.java:427)
at org.apache.xerces.parsers.AbstractSAXParser.endDocument(Unknown Source)
at org.apache.xerces.impl.XMLDocumentScannerImpl.endEntity(Unknown Source)
at org.apache.xerces.impl.XMLEntityManager.endEntity(Unknown Source)
at org.apache.xerces.impl.XMLEntityScanner.load(Unknown Source)
at org.apache.xerces.impl.XMLEntityScanner.skipSpaces(Unknown Source)
at
org.apache.xerces.impl.XMLDocumentScannerImpl$TrailingMiscDispatcher.dispatch(Unknown
Source)
at
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at org.apache.xalan.transformer.TrAXFilter.parse(TrAXFilter.java:191)
at org.apache.xalan.transformer.TrAXFilter.parse(TrAXFilter.java:191)
at transform.Transform.doTransform(Transform.java:298)
at transform.Transform.doTransform(Transform.java:279)
at transform.Transform.main(Transform.java:204)
I traced this to the following line in TransformerImpl.applyTemplateToNode():
DTM dtm = m_xcontext.getDTM(child);
This appears to be returning null when the XMLFilter object is being used for
the second time. If I comment out the:
m_xcontext.reset();
line in TransformerImpl.reset(), then the problem seems to be resolved, and I am
able to re-use the same XMLFilter object many times.
I have seem a few other items out on Google speaking of the same issue, and one
poster stated he had this problem even with a simple modification to the
UseXMLFilters sample to run the parse() in a loop; so this should be very easy
to reproduce. If not, let me know, and I can pass on my code.
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