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From "Grant Ingersoll (JIRA)" <j...@apache.org>
Subject [jira] Commented: (SOLR-1298) FunctionQuery results as pseudo-fields
Date Sun, 13 Dec 2009 11:47:18 GMT

    [ https://issues.apache.org/jira/browse/SOLR-1298?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12789878#action_12789878
] 

Grant Ingersoll commented on SOLR-1298:
---------------------------------------

Dang, you know it's bad when you wake up in the morning and the first thing that comes into
your head is what the interface should look like for some new feature in Solr.  

Alas, having just finished SOLR-1297, I think we should simply make the &fl parameter
be able to parse functions and, if need be, they can be materialized/executed as they are
being retrieved by the Writer (using SOLR-1650 if implemented).

Thus, the interface for this would be:
{code}
&fl=sum(x, y),id,a,b,c,score
{code}
or
{code}
&fl=id,sum(x, y),score
{code}
{code}
&fl=*,sum(x, y),score
{code}

So, the output would be:
{code}
...
<str name="id">foo</str>
<float name="sum(x,y)">40</float>
<float name="score">0.343</float>
...
{code}



> FunctionQuery results as pseudo-fields
> --------------------------------------
>
>                 Key: SOLR-1298
>                 URL: https://issues.apache.org/jira/browse/SOLR-1298
>             Project: Solr
>          Issue Type: New Feature
>            Reporter: Grant Ingersoll
>            Priority: Minor
>             Fix For: 1.5
>
>
> It would be helpful if the results of FunctionQueries could be added as fields to a document.

> Couple of options here:
> 1. Run FunctionQuery as part of relevance score and add that piece to the document
> 2. Run the function (not really a query) during Document/Field retrieval

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