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https://issues.apache.org/jira/browse/SOLR-349?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yonik Seeley updated SOLR-349:
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Attachment: FunctionQuery.patch
Attaching functionquery.patch... adding many new functions:
log, sqrt, abs, sum, product, const
scale(source, min, max) // scale values from source to fall between min and
max
map(source,min,max,target) // change any values that fall between min&max to
target
query(lucene_query, defaultVal) // use relevancy score, w/ defaultVal when
doc doesn't match
I also changed the function parser to use a hash lookup on function name since
the list was getting long. The parser will now also accept a float constant as
a value source, allowing things like add(a,2)
This is just a snapshot for feedback... no tests yet.
> boost query by a function of other fields
> -----------------------------------------
>
> Key: SOLR-349
> URL: https://issues.apache.org/jira/browse/SOLR-349
> Project: Solr
> Issue Type: New Feature
> Reporter: Yonik Seeley
> Attachments: FunctionQuery.patch, linear_combination.patch
>
>
> User should be able to boost a query by a function of other fields
> Some background:
> http://www.nabble.com/boosting-a-query-by-a-function-of-other-fields-tf4387856.html#a12510092
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