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Posted to c-dev@xerces.apache.org by "Boris Kolpackov (JIRA)" <xe...@xml.apache.org> on 2008/04/29 11:55:56 UTC
[jira] Created: (XERCESC-1798) Orphan/adopt grammar support in
XMLGrammarPoolImpl is broken
Orphan/adopt grammar support in XMLGrammarPoolImpl is broken
------------------------------------------------------------
Key: XERCESC-1798
URL: https://issues.apache.org/jira/browse/XERCESC-1798
Project: Xerces-C++
Issue Type: Bug
Components: Validating Parser (XML Schema)
Affects Versions: 2.8.0, 3.0.0
Reporter: Boris Kolpackov
The attached test case demonstrates a bug in the orphanGrammar()/cacheGrammar() implementation. In a nutshell, the problem is in the current architecture that uses XMLStringPool to store namespace URIs (and in some cases names). This string pool resides in the XMLGrammarPoolImpl instance and is shared by all individual grammars this grammar pool contains. When the grammar is orphaned, it does not contain any references to the pool which used to host it but it still contains string IDs that refer to the strings inside the string pool. Once such a grammar is imported with cacheGrammar() into a new grammar pool, there is no way for the importing grammar pool to populate its string pool with necessary strings.
Properly fixing this bug is not going to be easy. A fairly simple but ugly workaround is to manually synchronize string pools in the two grammar pools before importing the grammars (the workaround is commented out in the test case).
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[jira] Updated: (XERCESC-1798) Orphan/adopt grammar support in
XMLGrammarPoolImpl is broken
Posted by "Boris Kolpackov (JIRA)" <xe...@xml.apache.org>.
[ https://issues.apache.org/jira/browse/XERCESC-1798?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Boris Kolpackov updated XERCESC-1798:
-------------------------------------
Attachment: test.xsd
test.xml
test.cpp
The test case.
> Orphan/adopt grammar support in XMLGrammarPoolImpl is broken
> ------------------------------------------------------------
>
> Key: XERCESC-1798
> URL: https://issues.apache.org/jira/browse/XERCESC-1798
> Project: Xerces-C++
> Issue Type: Bug
> Components: Validating Parser (XML Schema)
> Affects Versions: 2.8.0, 3.0.0
> Reporter: Boris Kolpackov
> Attachments: test.cpp, test.xml, test.xsd
>
>
> The attached test case demonstrates a bug in the orphanGrammar()/cacheGrammar() implementation. In a nutshell, the problem is in the current architecture that uses XMLStringPool to store namespace URIs (and in some cases names). This string pool resides in the XMLGrammarPoolImpl instance and is shared by all individual grammars this grammar pool contains. When the grammar is orphaned, it does not contain any references to the pool which used to host it but it still contains string IDs that refer to the strings inside the string pool. Once such a grammar is imported with cacheGrammar() into a new grammar pool, there is no way for the importing grammar pool to populate its string pool with necessary strings.
> Properly fixing this bug is not going to be easy. A fairly simple but ugly workaround is to manually synchronize string pools in the two grammar pools before importing the grammars (the workaround is commented out in the test case).
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