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From "Sergey Borisov (JIRA)" <j...@apache.org>
Subject [jira] Created: (SOLR-1279) ApostropheTokenizer
Date Tue, 14 Jul 2009 18:27:15 GMT
ApostropheTokenizer
-------------------

                 Key: SOLR-1279
                 URL: https://issues.apache.org/jira/browse/SOLR-1279
             Project: Solr
          Issue Type: New Feature
          Components: Analysis
            Reporter: Sergey Borisov
            Priority: Minor


ApostropheTokenizer creates extra tokens during the analysis stage for the fields containing
apostrophes. The reason for adding this is to ensure that documents that differ only by apostrophe
have the same relevancy score. 

For example, if the document contains string "McDonald's", it will be tokenized as "McDonald's
McDonalds". This way when the search is performed against "McDonald's" or "McDonalds" will
produce similar score.

This code handles up to two apostrophes in a token.

To use this tokenizer add the following line in schema.xml

<analyzer type="index">
      <filter class="org.apache.lucene.analysis.ApostropheTokenFactory"/>
...
</analyzer>


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