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Posted to dev@lucene.apache.org by "Ingomar Wesp (JIRA)" <ji...@apache.org> on 2018/06/12 19:16:00 UTC
[jira] [Commented] (SOLR-5332) Add "preserve original" setting to
the EdgeNGramFilterFactory
[ https://issues.apache.org/jira/browse/SOLR-5332?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16510060#comment-16510060 ]
Ingomar Wesp commented on SOLR-5332:
------------------------------------
Given that LUCENE-7960 has been closed, I think this issue can be marked as fixed, too.
> Add "preserve original" setting to the EdgeNGramFilterFactory
> -------------------------------------------------------------
>
> Key: SOLR-5332
> URL: https://issues.apache.org/jira/browse/SOLR-5332
> Project: Solr
> Issue Type: Wish
> Affects Versions: 4.4, 4.5, 4.5.1, 4.6
> Reporter: Alexander S.
> Priority: Major
> Fix For: 5.2, 6.0
>
>
> Hi, as described here: http://lucene.472066.n3.nabble.com/Help-to-figure-out-why-query-does-not-match-td4086967.html the problem is in that if you have these 2 strings to index:
> 1. facebook.com/someuser.1
> 2. facebook.com/someveryandverylongusername
> and the edge ngram filter factory with min and max gram size settings 2 and 25, search requests for these urls will fail.
> But search requests for:
> 1. facebook.com/someuser
> 2. facebook.com/someveryandverylonguserna
> will work properly.
> It's because first url has "1" at the end, which is lover than the allowed min gram size. In the second url the user name is longer than the max gram size (27 characters).
> Would be good to have a "preserve original" option, that will add the original string to the index if it does not fit the allowed gram size, so that "1" and "someveryandverylongusername" tokens will also be added to the index.
> Best,
> Alex
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