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https://issues.apache.org/jira/browse/SOLR-1980?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12884147#action_12884147
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Lance Norskog commented on SOLR-1980:
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Another use case is with phrases, especially sloppy phrases.
"^hello kitty" would find "hello kitty" at the beginning of the text.
"^hello"~5 would find "hello" among the first 5 words, but the closer to the
beginning, the better. This is especially interesting for consumer searches-
people tend to type the first word of a movie title first.
> 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
>
> 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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