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https://issues.apache.org/jira/browse/LUCENE-2995?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Muir updated LUCENE-2995:
--------------------------------

    Attachment: LUCENE-2995.patch

Just a quick shot at this (all tests pass).

Really any serious 'refactoring' e.g. perf improvements should be on followup 
issues I think.

before applying the patch, run this:
{noformat}
svn move lucene/contrib/spellchecker modules
svn move solr/src/java/org/apache/solr/util/HighFrequencyDictionary.java 
modules/spellchecker/src/java/org/apache/lucene/search/spell
svn move solr/src/java/org/apache/solr/util/TermFreqIterator.java 
modules/spellchecker/src/java/org/apache/lucene/search/spell
svn move solr/src/java/org/apache/solr/util/SortedIterator.java 
modules/spellchecker/src/java/org/apache/lucene/search/spell
svn move solr/src/java/org/apache/solr/spelling/suggest/Suggester.java 
solr/src/java/org/apache/solr/spelling
svn move solr/src/java/org/apache/solr/spelling/suggest 
modules/spellchecker/src/java/org/apache/lucene/search/spell
{noformat}

> factor out a shared spellchecking module
> ----------------------------------------
>
>                 Key: LUCENE-2995
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2995
>             Project: Lucene - Java
>          Issue Type: Task
>            Reporter: Robert Muir
>             Fix For: 4.0
>
>         Attachments: LUCENE-2995.patch
>
>
> In lucene's contrib we have spellchecking support (index-based spellchecker, 
> directspellchecker, etc). 
> we also have some things like pluggable comparators.
> In solr we have auto-suggest support (with two implementations it looks 
> like), some good utilities like HighFrequencyDictionary, etc.
> I think spellchecking is really important... google has upped the ante to 
> what users expect.
> So I propose we combine all this stuff into a shared modules/spellchecker, 
> which will make it easier
> to refactor and improve the quality.

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