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From Grant Ingersoll <gsing...@apache.org>
Subject Re: [jira] Commented: (SOLR-1581) Facet by Function
Date Fri, 18 Feb 2011 12:15:22 GMT
There is some support in DocValues for multiple values per document, but they still ultimately
must reduce down to a single value coming out of the function.  See the VectorValueSource
as an example.  In other words, the API is there, but nothing implements it.  I imagine you
could use the UninvertedField to back a ValueSource and have it leverage the DocValues that
return multiple values.

If you can specify your use case, that might help define a solution.

On Feb 17, 2011, at 3:00 PM, Bill Bell wrote:

> Yes I know all too well. What would it take to extend VS to multivalued fields ?
> 
> Bill Bell
> Sent from mobile
> 
> 
> On Feb 17, 2011, at 10:08 AM, "Yonik Seeley (JIRA)" <jira@apache.org> wrote:
> 
>> 
>>   [ https://issues.apache.org/jira/browse/SOLR-1581?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12995924#comment-12995924
] 
>> 
>> Yonik Seeley commented on SOLR-1581:
>> ------------------------------------
>> 
>> bq. It then occurred to me that wouldn't this be a faster way then doing the range
queries
>> 
>> Sometimes yes, sometimes no.  This is sort of analogous to range vs frange.  It depends
on the number of ranges, the number of documents in the base set, etc.  Using ValueSource
will currently only work for single-valued fields.
>> 
>>> Facet by Function
>>> -----------------
>>> 
>>>               Key: SOLR-1581
>>>               URL: https://issues.apache.org/jira/browse/SOLR-1581
>>>           Project: Solr
>>>        Issue Type: New Feature
>>>          Reporter: Grant Ingersoll
>>>           Fix For: Next
>>> 
>>> 
>>> It would be really great if we could execute a function and quantize it into
buckets that could then be returned as facets.
>> 
>> -- 
>> This message is automatically generated by JIRA.
>> -
>> For more information on JIRA, see: http://www.atlassian.com/software/jira
>> 
>> 
>> 
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--------------------------
Grant Ingersoll
http://www.lucidimagination.com/

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