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https://issues.apache.org/jira/browse/SOLR-12238?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17023539#comment-17023539
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Alessandro Benedetti edited comment on SOLR-12238 at 1/25/20 1:05 PM:
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I linked the related Lucene Jira, resolved all conflicts and re-engineered the
approach hopefully in a cleaner way.
I tagged in the Lucene issue all the relevant people that worked on this in the
last few years.
Solr tests have been hugely refined and next steps will be oriented to the
Lucene Query Builder tests.
was (Author: alessandro.benedetti):
The Lucene functionality is described here
> 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: 20m
> 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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