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Posted to j-dev@xerces.apache.org by "Michael Glavassevich (JIRA)" <xe...@xml.apache.org> on 2007/02/23 19:23:05 UTC
[jira] Resolved: (XERCESJ-206) Stack overflow when using a schema
validation.
[ https://issues.apache.org/jira/browse/XERCESJ-206?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Michael Glavassevich resolved XERCESJ-206.
------------------------------------------
Resolution: Fixed
I've just committed an improvement to code in SVN which covers a number of common cases. We now build a representation of large minOccurs/maxOccurs in constant time and memory (which uses a counter during validation) for element and wildcard particles when each model group particle in the content model:
* has minOccurs/maxOccurs == 1; or
* contains only one element/wildcard particle with minOccurs/maxOccurs == 1
Handling sequences, choices and nested minOccurs/maxOccurs is somewhat tricker. We would need a more general solution than the one implemented for elements and wildcards to process those gracefully. I've opened a new JIRA issue [1] for tracking that.
[1] http://issues.apache.org/jira/browse/XERCESJ-1227
> Stack overflow when using a schema validation.
> ----------------------------------------------
>
> Key: XERCESJ-206
> URL: https://issues.apache.org/jira/browse/XERCESJ-206
> Project: Xerces2-J
> Issue Type: Bug
> Components: XML Schema Structures
> Affects Versions: 2.0.0
> Environment: Operating System: Windows NT/2K
> Platform: PC
> Reporter: Tapani Saarinen
> Assigned To: Michael Glavassevich
>
> Stack overflow when using a schema validation. If all lines except the first and last lines
> (<xsd:schema...>) from the schema file are removed the overflow does not
> occur.
> java.lang.StackOverflowError
> at
> org.apache.xerces.validators.common.Grammar.buildSyntaxTree(Grammar.java:856)
> at
> org.apache.xerces.validators.common.Grammar.buildSyntaxTree(Grammar.java:856)
> at
> org.apache.xerces.validators.common.Grammar.buildSyntaxTree(Grammar.java:856)
> at
> org.apache.xerces.validators.common.Grammar.buildSyntaxTree(Grammar.java:856)
> at
> org.apache.xerces.validators.common.Grammar.buildSyntaxTree(Grammar.java:856)
> at
> org.apache.xerces.validators.common.Grammar.buildSyntaxTree(Grammar.java:856)
> at
> org.apache.xerces.validators.common.Grammar.buildSyntaxTree(Grammar.java:856)
> at
> org.apache.xerces.validators.common.Grammar.buildSyntaxTree(Grammar.java:856)
> at
> org.apache.xerces.validators.common.Grammar.buildSyntaxTree(Grammar.java:856)
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