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May 6, 2012, 6:15 AM
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[jira] [Resolved] (LUCENE-3830) MappingCharFilter could be improved by switching to an FST.
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[ https://issues.apache.org/jira/browse/LUCENE-3830?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Michael McCandless resolved LUCENE-3830.
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Resolution: Fixed
> MappingCharFilter could be improved by switching to an FST.
> -----------------------------------------------------------
>
> Key: LUCENE-3830
> URL: https://issues.apache.org/jira/browse/LUCENE-3830
> Project: Lucene - Java
> Issue Type: Improvement
> Reporter: Dawid Weiss
> Assignee: Michael McCandless
> Priority: Minor
> Labels: gsoc2012, lucene-gsoc-12
> Fix For: 4.0
>
> Attachments: LUCENE-3830.patch, LUCENE-3830.patch, LUCENE-3830.patch, PerfTestMappingCharFilter.java
>
>
> MappingCharFilter stores an overly complex tree-like structure for matching input patterns. The input is a union of fixed strings mapped to a set of fixed strings; an fst matcher would be ideal here and provide both memory and speed improvement I bet.
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