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From "Kuri Masta (JIRA)" <j...@apache.org>
Subject [jira] Created: (SOLR-2093) regular expression in PatternReplaceFilter can handle: /([^/]*)
Date Fri, 27 Aug 2010 12:37:53 GMT
regular expression in PatternReplaceFilter can handle: /([^/]*)
---------------------------------------------------------------

                 Key: SOLR-2093
                 URL: https://issues.apache.org/jira/browse/SOLR-2093
             Project: Solr
          Issue Type: Bug
          Components: Schema and Analysis
    Affects Versions: 1.4
         Environment: debian,JRE1.6,solr1.4
            Reporter: Kuri Masta
            Priority: Minor


Using PatternReplaceFilter i want to extract a certain word out of the URI.
Although I now understand that I should handle this outside of Solr, the fact remains that
Solr does not adequately handle regular expressions.

Viewing the source code, I don't see any problems since it uses the java library.

The problem:
      <analyzer type="index">
        <tokenizer class="solr.WhitespaceTokenizerFactory"/>
        <filter class="solr.PatternReplaceFilterFactory"
                        pattern="/([^/]*)/[^/]*$" replacement="$1"  replace="all" />
      </analyzer>

Input text:
- a/b/c

Expected
- b

Result Solr
- ab

An online JAVA regexp tester (http://www.regexplanet.com/simple/index.html):
- b

So the problem area lies at /([^/])

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