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From "David Smiley (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-1878) RelaxQueryComponent - A new SearchComponent that relaxes the main query in a semiautomatic way
Date Fri, 20 May 2011 13:50:48 GMT

    [ https://issues.apache.org/jira/browse/SOLR-1878?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13036835#comment-13036835
] 

David Smiley commented on SOLR-1878:
------------------------------------

Cool tip Koji! I'll have to remember that.

> RelaxQueryComponent - A new SearchComponent that relaxes the main query in a semiautomatic
way
> ----------------------------------------------------------------------------------------------
>
>                 Key: SOLR-1878
>                 URL: https://issues.apache.org/jira/browse/SOLR-1878
>             Project: Solr
>          Issue Type: New Feature
>          Components: SearchComponents - other
>    Affects Versions: 1.4
>            Reporter: Koji Sekiguchi
>            Priority: Minor
>
> I have the following use case:
> Imagine that you visit a web page for searching an apartment for rent. You choose parameters,
usually mark check boxes and this makes AND queries:
> {code}
> rent:[* TO 1500] AND bedroom:[2 TO *] AND floor:[100 TO *]
> {code}
> If the conditions are too tight, Solr may return few or zero leasehold properties. Because
the things is not good for the site visitors and also owners, the owner may want to recommend
the visitors to relax the conditions something like:
> {code}
> rent:[* TO 1700] AND bedroom:[2 TO *] AND floor:[100 TO *]
> {code}
> or:
> {code}
> rent:[* TO 1500] AND bedroom:[2 TO *] AND floor:[90 TO *]
> {code}
> And if the relaxed query get more numFound than original, the web page can provide a
link with a comment "if you can pay additional $100, ${numFound} properties will be found!".
> Today, I need to implement Solr client for this scenario, but this way makes two round
trips for showing one page and consistency problem (and laborious of course!).
> I'm thinking a new SearchComponent that can be used with QueryComponent. It does search
when numFound of the main query is less than a threshold. Clients can specify via request
parameters how the query can be relaxed.

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