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Posted to j-dev@xerces.apache.org by "Michael Glavassevich (JIRA)" <xe...@xml.apache.org> on 2006/11/21 19:22:02 UTC
[jira] Updated: (XERCESJ-1214) Provide a SymbolTable with
SoftReferences to avoid OutOfMemoryErrors
[ http://issues.apache.org/jira/browse/XERCESJ-1214?page=all ]
Michael Glavassevich updated XERCESJ-1214:
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Affects Version/s: 2.8.1
> Provide a SymbolTable with SoftReferences to avoid OutOfMemoryErrors
> --------------------------------------------------------------------
>
> Key: XERCESJ-1214
> URL: http://issues.apache.org/jira/browse/XERCESJ-1214
> Project: Xerces2-J
> Issue Type: New Feature
> Components: Other
> Affects Versions: 2.8.1
> Reporter: Peter McCracken
> Assigned To: Peter McCracken
> Priority: Minor
> Fix For: 2.9.0
>
>
> The standard org.apache.xerces.util.SymbolTable keeps strong references to its String symbols, and provides no mechanism to eliminate symbolsonce added. Although this is fine for most situations, if a SymbolTable is expected to have a long lifetime and parse many dissimilar documents, or to parse documents containing many different unique strings (possibly because of artificially generated prefixes), then the SymbolTable can cause an OutOfMemoryError.
> An alternate SymbolTable should be provided that keeps SoftReferences to its symbols, so that OutOfMemoryErrors will never happen. The overhead of using SoftReferences means that this should not become the default SymbolTable, but it would be useful as an option for people encountering the above parsing scenarios.
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