Alessandro Benedetti commented on SOLR-12238:

Anything I can do my side to speed up the review and contribution ?
Absolutely happy to improve the patch if necessary, but I didn't get any code 
review yet !

> Synonym Query Style Boost By Payload
> ------------------------------------
>                 Key: SOLR-12238
>                 URL: https://issues.apache.org/jira/browse/SOLR-12238
>             Project: Solr
>          Issue Type: Improvement
>      Security Level: Public(Default Security Level. Issues are Public) 
>          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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