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https://issues.apache.org/jira/browse/SOLR-12238?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17021919#comment-17021919
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Alessandro Benedetti commented on SOLR-12238:
---------------------------------------------

Hi [~dsmiley], you are right.
The github pull request was linked in the Jira, I link it here:

[https://github.com/apache/lucene-solr/pull/357/files|https://github.com/apache/lucene-solr/pull/357/files]

Do you want me to split the functionality in two Jiras (and split the code 
changes in two) or just migrate this to Lucene?
It has been a while, so I'll need to catch up with it, I am not sure the Lucene 
modifications are useful on their own.
What's the most common approach when the Lucene modifications are pre-requisite 
specifically for a Solr feature?



> Synonym Query Style Boost By Payload
> ------------------------------------
>
>                 Key: SOLR-12238
>                 URL: https://issues.apache.org/jira/browse/SOLR-12238
>             Project: Solr
>          Issue Type: Improvement
>          Components: query parsers
>    Affects Versions: 7.2
>            Reporter: Alessandro Benedetti
>            Priority: Major
>         Attachments: SOLR-12238.patch, SOLR-12238.patch, SOLR-12238.patch, 
> SOLR-12238.patch
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> This improvement is built on top of the Synonym Query Style feature and 
> brings the possibility of boosting synonym queries using the payload 
> associated.
> It introduces two new modalities for the Synonym Query Style :
> PICK_BEST_BOOST_BY_PAYLOAD -> build a Disjunction query with the clauses 
> boosted by payload
> AS_DISTINCT_TERMS_BOOST_BY_PAYLOAD -> build a Boolean query with the clauses 
> boosted by payload
> This new synonym query styles will assume payloads are available so they must 
> be used in conjunction with a token filter able to produce payloads.
> An synonym.txt example could be :
> # Synonyms used by Payload Boost
> tiger => tiger|1.0, Big_Cat|0.8, Shere_Khan|0.9
> leopard => leopard, Big_Cat|0.8, Bagheera|0.9
> lion => lion|1.0, panthera leo|0.99, Simba|0.8
> snow_leopard => panthera uncia|0.99, snow leopard|1.0
> A simple token filter to populate the payloads from such synonym.txt is :
> <filter class="solr.DelimitedPayloadTokenFilterFactory" encoder="float" 
> delimiter="|"/>



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