[jira] [Updated] (SOLR-6202) Simplify the use of "rq" for query re-ranking

["Maciej Zasada (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-6202?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Maciej Zasada updated SOLR-6202:
--------------------------------

    Attachment: SOLR-6202.patch

Hi [~hossman], [~joel.bernstein]

I'd like to summit a patch for this issue. I tried to make changes accordingly to your suggestions: 
* default parser for {{rq}} is {{ReRankQParser}}
* {{reRankQuery}} local param is deprecated in favour of using {{v}}
* query is parsed using {{subQuery()}}

I duplicated rerank tests so they use simplified syntax as well. If you have any suggestions, I'm more than happy to hear them. 

Cheers, 
Maciej

> Simplify the use of "rq" for query re-ranking
> ---------------------------------------------
>
>                 Key: SOLR-6202
>                 URL: https://issues.apache.org/jira/browse/SOLR-6202
>             Project: Solr
>          Issue Type: Improvement
>            Reporter: Hoss Man
>         Attachments: SOLR-6202.patch
>
>
> It seems like there is some really easy tweaks we could make to the "rq" (Re-Ranking Query) API to make it less verbose and easier to use:
> * in QueryComponent
> ** when parsing "rq", we should use "rerank" as the default parser
> *** should be a trivial change to the QParser.getParser when initializin rqparser
> * in ReRankQParserPlugin
> ** we should deprecate/remove the "reRankQuery" local param and just use "v"
> *** this is the implicit param created when using the body of the query string, or it can be explicit (to refer to variables)
> ** we should leverage subQuery() (just like NestedQParser does) so that "defType" is respected when parsing the wrapped query
> Unless i'm overlooking something, the combination of these simple changes should drastically simplify a lot of use cases...
> {noformat}
> BEFORE: rq={!rerank reRankQuery=$rqq}rqq=XXX
>  AFTER: rq=XXX
> BEFORE: rq={!rerank reRankQuery=$rqq reRankDocs=200}$rqq={!func}XXX
>  AFTER: rq={!reRankDocs=200 defType=func}XXX
> {noformat}



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