A function query is simply returning a calculated result based on existing data - no new fields required.

Did you actually want to precompute a value, store it in the index, and then query on it? If so, you could do that indexing with a custom or scripted update processor.

Flesh out an example of exactly what you want.

-- Jack Krupansky

-----Original Message----- From: Alejandro Calbazana
Sent: Wednesday, October 30, 2013 12:46 PM
To: solr-user@lucene.apache.org
Subject: Re: Computing Results So That They are Returned in Search Results

Sounds really close to what I'm looking for, but this sounds like it would
result in a new field on a document (or a new value for a field defined to
hold the result of a function).  Would it be possible for a function query
to produce a new document so that I can associate the computed value with
it?

Thanks,

Alejandro


On Wed, Oct 30, 2013 at 12:05 PM, Jack Krupansky <j...@basetechnology.com>wrote:

You could create a custom "value source" and then use it in a function
query embedded in your return fields list (fl).

So, the function query could use a function (value source) that takes a
field, fetches its value, performs some arbitrary calculation, and then
returns that value.

fl=id,name,my-func(field1),my-**func(field2)

-- Jack Krupansky

-----Original Message----- From: Alejandro Calbazana
Sent: Wednesday, October 30, 2013 10:10 AM
To: solr-user@lucene.apache.org
Subject: Computing Results So That They are Returned in Search Results

I'd like to throw out a design question and see if its possible to solve
this with Solr.

I have a set of data that is computed that I'd like to make searchable.
Ideally, I'd like to have all documents indexed and call it the day, but
the nature of the data is such that it needs to be computed given a
definition.  I'm interested in searching on definitions and then creating
results on the fly that are calculated based on something embedded in the
definition.

Is it possible to embed this calculation login into Solr's result handling
process?  I know this sounds exotic, but the nature of the data is such
that I can't index these calculated documents because I don't know what the
boundary is and specifiying an arbitrary number isn't ideal.

Has anyone run across something like this?

Thanks,

Alejandr


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