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https://issues.apache.org/jira/browse/SOLR-1874?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Muir resolved SOLR-1874.
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Resolution: Fixed
Committed revision 932752.
> optimize patternreplacefilter
> -----------------------------
>
> Key: SOLR-1874
> URL: https://issues.apache.org/jira/browse/SOLR-1874
> Project: Solr
> Issue Type: Improvement
> Components: Schema and Analysis
> Affects Versions: 3.1
> Reporter: Robert Muir
> Assignee: Robert Muir
> Fix For: 3.1
>
> Attachments: SOLR-1874.patch
>
>
> We can optimize PatternReplaceFilter:
> * don't need to create Strings since CharTermAttribute implements
> CharSequence, just match directly against it.
> * reuse the matcher, since CharTermAttribute is reused, too.
> * don't create Strings/waste time in replaceAll/replaceFirst if the term
> doesn't match the regex at all... check with find() first.
> There is more that could be done to make it faster for terms that do match,
> but this is simple and a start.
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