Hello all.
I have the need to include the result of a computed value in the search
results of solr query and sort by that value.
The documentation about FunctionQuery available at:
<http://wiki.apache.org/solr/FunctionQuery>
states that this is possible (see the "General Example" at the bottom),
but I'm unable to make it work.
Using solr1.3 and the included example application this is what I get:
Query:
http://localhost:8983/solr/select?q=id:SP2514N&fl=id,popularity,score>
numFound=1
score=3.5649493
But for the Query: <http://localhost:8983/solr/select?q=id:SP2514N
_val_:"pow(popularity,2)"&fl=id,popularity,score>, the expected results
were:
numFound=1
score=36
and what I get instead is:
numFound=26
score=13.155498 (for doc with id=SP2514N)
This is surprising for two reasons:
-The score value is not the square of the "popularity" field.
-The result set cardinality is altered by the use of the FunctionQuery
and I was under the impression that functions changed the ordering of
the results but had no effect on the actual number of matched documents.
Is this a bug in solr or the is documentation at fault?
Am I missing something? Is there any way to include a computed value in
the search results and sort by it?
Thanks in advance.
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