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From Jan Høydahl (Updated) (JIRA) <j...@apache.org>
Subject [jira] [Updated] (SOLR-1980) Implement boundary match support
Date Wed, 11 Apr 2012 13:05:17 GMT

     [ https://issues.apache.org/jira/browse/SOLR-1980?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jan Høydahl updated SOLR-1980:
------------------------------

    Fix Version/s: 4.0

Tagging this for 4.0, hoping to revive some work on it...

Btw. Any comments to my last syntax suggestion, utilizing term positions @N:M ?
                
> Implement boundary match support
> --------------------------------
>
>                 Key: SOLR-1980
>                 URL: https://issues.apache.org/jira/browse/SOLR-1980
>             Project: Solr
>          Issue Type: New Feature
>          Components: Schema and Analysis
>            Reporter: Jan Høydahl
>             Fix For: 4.0
>
>
> Sometimes you need to specify that a query should match only at the start or end of a
field, or be an exact match.
> Example content:
> 1) a quick fox is brown
> 2) quick fox is brown
> Example queries:
> "^quick fox" -> should only match 2)
> "brown$" -> should match 1) and 2)
> "^quick fox is brown$" -> should only match 2)
> Proposed way of implmementation is through a new BoundaryMatchTokenFilter which behaves
like this:
> On the index side it inserts special unique tokens at beginning and end of field. These
could be some weird unicode sequence.
> On the query side, it looks for the first character matching "^" or the last character
matching "$" and replaces them with the special tokens.

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