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From Alessandro Benedetti <benedetti.ale...@gmail.com>
Subject [Solr Join Score Mode] Query parser lack
Date Mon, 23 Sep 2013 11:54:13 GMT
Hi guys,
I was studying in deep the join feature, and I noticed that in Solr , the
join query parser is not working in scoring.
If you add the parameter "scoreMode" it is completely ignored...

Checking the source code it's possible to see that the join query is built
as follow :

public class JoinQParserPlugin extends QParserPlugin {

....

*JoinQuery jq = new JoinQuery(fromField, toField, fromIndex, fromQuery);*

And the JoinQuery object has no implementation regarding the score mode.

Looking in the lucene code we can find , in the class :

org.apache.lucene.search.join.JoinUtil a complete usage of the score mode param.

Why has not be ported ? Anyone is planning to change the JoinQParserPlugin ?

https://issues.apache.org/jira/browse/LUCENE-4043

looking here is possible to customize a query parser adding a wrapping
of the JoinUtil, but nothing official ?

Cheers


-- 
--------------------------

Benedetti Alessandro
Visiting card : http://about.me/alessandro_benedetti

"Tyger, tyger burning bright
In the forests of the night,
What immortal hand or eye
Could frame thy fearful symmetry?"

William Blake - Songs of Experience -1794 England

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