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Posted to j-dev@xerces.apache.org by "Michael Glavassevich (JIRA)" <xe...@xml.apache.org> on 2007/07/20 21:48:06 UTC
[jira] Updated: (XERCESJ-1260) DTDGrammar is not thread-safe, but
needs to be in order to work with grammar pools.
[ https://issues.apache.org/jira/browse/XERCESJ-1260?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Michael Glavassevich updated XERCESJ-1260:
------------------------------------------
Description:
If a DTDGrammar is pre-parsed and stored in an XMLGrammarPool which is shared across parsers running in different threads, it's possible that the content model builder will fail with one of the exceptions below. The createChildModel() needs to be synchronized (like the analagous method in CMBuilder for SchemaGrammars).
java.lang.NullPointerException
at org.apache.xerces.impl.dtd.models.DFAContentModel.buildDFA(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.<init>(DFAContentModel.java:215)
at org.apache.xerces.impl.dtd.DTDGrammar.createChildModel(DTDGrammar.java:2271)
at org.apache.xerces.impl.dtd.DTDGrammar.getElementContentModelValidator(DTDGrammar.java(Compiled Code))
at org.apache.xerces.impl.dtd.DTDGrammar.getElementDecl(DTDGrammar.java(Compiled Code))
at org.apache.xerces.impl.dtd.XMLDTDValidator.checkContent(XMLDTDValidator.java(Compiled Code))
at org.apache.xerces.impl.dtd.XMLDTDValidator.handleEndElement(XMLDTDValidator.java(Compiled Code))
at org.apache.xerces.impl.dtd.XMLDTDValidator.endElement(XMLDTDValidator.java(Compiled Code))
at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(XMLNSDocumentScannerImpl.java(Compiled Code))
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(XMLDocumentFragmentScannerImpl.java(Compiled Code))
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java(Compiled Code))
at org.apache.xerces.parsers.XML11Configuration.parse(XML11Configuration.java(Compiled Code))
at org.apache.xerces.parsers.XML11Configuration.parse(XML11Configuration.java(Compiled Code))
at org.apache.xerces.parsers.XMLParser.parse(XMLParser.java(Inlined Compiled Code))
at org.apache.xerces.parsers.AbstractSAXParser.parse(AbstractSAXParser.java(Compiled Code))
java.lang.ArrayIndexOutOfBoundsException: 115
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.buildDFA(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.<init>(DFAContentModel.java:215)
at org.apache.xerces.impl.dtd.DTDGrammar.createChildModel(DTDGrammar.java:2271)
at org.apache.xerces.impl.dtd.DTDGrammar.getElementContentModelValidator(DTDGrammar.java:1735)
at org.apache.xerces.impl.dtd.DTDGrammar.getElementDecl(DTDGrammar.java:1237)
at org.apache.xerces.impl.dtd.XMLDTDValidator.checkContent(XMLDTDValidator.java:1689)
at org.apache.xerces.impl.dtd.XMLDTDValidator.handleEndElement(XMLDTDValidator.java:2024)
at org.apache.xerces.impl.dtd.XMLDTDValidator.endElement(XMLDTDValidator.java:923)
at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(XMLNSDocumentScannerImpl.java:673)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(XMLDocumentFragmentScannerImpl.java:1645)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:324)
at org.apache.xerces.parsers.XML11Configuration.parse(XML11Configuration.java:845)
at org.apache.xerces.parsers.XML11Configuration.parse(XML11Configuration.java:768)
at org.apache.xerces.parsers.XMLParser.parse(XMLParser.java:108)
at org.apache.xerces.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1127)
was:
If a DTDGrammar is pre-parsed and stored in an XMLGrammarPool which is shared across parsers running in different threads, it's possible that the content model builder will fail with one of the exceptions below. The createChildModel() needs to be synchronized (like analagous method in CMBuilder for SchemaGrammars).
java.lang.NullPointerException
at org.apache.xerces.impl.dtd.models.DFAContentModel.buildDFA(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.<init>(DFAContentModel.java:215)
at org.apache.xerces.impl.dtd.DTDGrammar.createChildModel(DTDGrammar.java:2271)
at org.apache.xerces.impl.dtd.DTDGrammar.getElementContentModelValidator(DTDGrammar.java(Compiled Code))
at org.apache.xerces.impl.dtd.DTDGrammar.getElementDecl(DTDGrammar.java(Compiled Code))
at org.apache.xerces.impl.dtd.XMLDTDValidator.checkContent(XMLDTDValidator.java(Compiled Code))
at org.apache.xerces.impl.dtd.XMLDTDValidator.handleEndElement(XMLDTDValidator.java(Compiled Code))
at org.apache.xerces.impl.dtd.XMLDTDValidator.endElement(XMLDTDValidator.java(Compiled Code))
at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(XMLNSDocumentScannerImpl.java(Compiled Code))
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(XMLDocumentFragmentScannerImpl.java(Compiled Code))
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java(Compiled Code))
at org.apache.xerces.parsers.XML11Configuration.parse(XML11Configuration.java(Compiled Code))
at org.apache.xerces.parsers.XML11Configuration.parse(XML11Configuration.java(Compiled Code))
at org.apache.xerces.parsers.XMLParser.parse(XMLParser.java(Inlined Compiled Code))
at org.apache.xerces.parsers.AbstractSAXParser.parse(AbstractSAXParser.java(Compiled Code))
java.lang.ArrayIndexOutOfBoundsException: 115
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.buildDFA(DFAContentModel.java(Compiled Code))
at org.apache.xerces.impl.dtd.models.DFAContentModel.<init>(DFAContentModel.java:215)
at org.apache.xerces.impl.dtd.DTDGrammar.createChildModel(DTDGrammar.java:2271)
at org.apache.xerces.impl.dtd.DTDGrammar.getElementContentModelValidator(DTDGrammar.java:1735)
at org.apache.xerces.impl.dtd.DTDGrammar.getElementDecl(DTDGrammar.java:1237)
at org.apache.xerces.impl.dtd.XMLDTDValidator.checkContent(XMLDTDValidator.java:1689)
at org.apache.xerces.impl.dtd.XMLDTDValidator.handleEndElement(XMLDTDValidator.java:2024)
at org.apache.xerces.impl.dtd.XMLDTDValidator.endElement(XMLDTDValidator.java:923)
at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(XMLNSDocumentScannerImpl.java:673)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(XMLDocumentFragmentScannerImpl.java:1645)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:324)
at org.apache.xerces.parsers.XML11Configuration.parse(XML11Configuration.java:845)
at org.apache.xerces.parsers.XML11Configuration.parse(XML11Configuration.java:768)
at org.apache.xerces.parsers.XMLParser.parse(XMLParser.java:108)
at org.apache.xerces.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1127)
> DTDGrammar is not thread-safe, but needs to be in order to work with grammar pools.
> -----------------------------------------------------------------------------------
>
> Key: XERCESJ-1260
> URL: https://issues.apache.org/jira/browse/XERCESJ-1260
> Project: Xerces2-J
> Issue Type: Bug
> Components: DTD
> Affects Versions: 2.9.0
> Reporter: Michael Glavassevich
>
> If a DTDGrammar is pre-parsed and stored in an XMLGrammarPool which is shared across parsers running in different threads, it's possible that the content model builder will fail with one of the exceptions below. The createChildModel() needs to be synchronized (like the analagous method in CMBuilder for SchemaGrammars).
> java.lang.NullPointerException
> at org.apache.xerces.impl.dtd.models.DFAContentModel.buildDFA(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.<init>(DFAContentModel.java:215)
> at org.apache.xerces.impl.dtd.DTDGrammar.createChildModel(DTDGrammar.java:2271)
> at org.apache.xerces.impl.dtd.DTDGrammar.getElementContentModelValidator(DTDGrammar.java(Compiled Code))
> at org.apache.xerces.impl.dtd.DTDGrammar.getElementDecl(DTDGrammar.java(Compiled Code))
> at org.apache.xerces.impl.dtd.XMLDTDValidator.checkContent(XMLDTDValidator.java(Compiled Code))
> at org.apache.xerces.impl.dtd.XMLDTDValidator.handleEndElement(XMLDTDValidator.java(Compiled Code))
> at org.apache.xerces.impl.dtd.XMLDTDValidator.endElement(XMLDTDValidator.java(Compiled Code))
> at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(XMLNSDocumentScannerImpl.java(Compiled Code))
> at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(XMLDocumentFragmentScannerImpl.java(Compiled Code))
> at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java(Compiled Code))
> at org.apache.xerces.parsers.XML11Configuration.parse(XML11Configuration.java(Compiled Code))
> at org.apache.xerces.parsers.XML11Configuration.parse(XML11Configuration.java(Compiled Code))
> at org.apache.xerces.parsers.XMLParser.parse(XMLParser.java(Inlined Compiled Code))
> at org.apache.xerces.parsers.AbstractSAXParser.parse(AbstractSAXParser.java(Compiled Code))
> java.lang.ArrayIndexOutOfBoundsException: 115
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.postTreeBuildInit(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.buildDFA(DFAContentModel.java(Compiled Code))
> at org.apache.xerces.impl.dtd.models.DFAContentModel.<init>(DFAContentModel.java:215)
> at org.apache.xerces.impl.dtd.DTDGrammar.createChildModel(DTDGrammar.java:2271)
> at org.apache.xerces.impl.dtd.DTDGrammar.getElementContentModelValidator(DTDGrammar.java:1735)
> at org.apache.xerces.impl.dtd.DTDGrammar.getElementDecl(DTDGrammar.java:1237)
> at org.apache.xerces.impl.dtd.XMLDTDValidator.checkContent(XMLDTDValidator.java:1689)
> at org.apache.xerces.impl.dtd.XMLDTDValidator.handleEndElement(XMLDTDValidator.java:2024)
> at org.apache.xerces.impl.dtd.XMLDTDValidator.endElement(XMLDTDValidator.java:923)
> at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(XMLNSDocumentScannerImpl.java:673)
> at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(XMLDocumentFragmentScannerImpl.java:1645)
> at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:324)
> at org.apache.xerces.parsers.XML11Configuration.parse(XML11Configuration.java:845)
> at org.apache.xerces.parsers.XML11Configuration.parse(XML11Configuration.java:768)
> at org.apache.xerces.parsers.XMLParser.parse(XMLParser.java:108)
> at org.apache.xerces.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1127)
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