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From Upayavira ...@odoko.co.uk>
Subject Re: Computing Results So That They are Returned in Search Results
Date Wed, 30 Oct 2013 22:35:00 GMT
Also note that function queries only return numbers (given their origin
in scoring). They cannot be used to create virtual string or text
fields.

Upayavira

On Wed, Oct 30, 2013, at 05:19 PM, Jack Krupansky wrote:
> 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 
> <jack@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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