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https://issues.apache.org/jira/browse/SOLR-12965?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jason Gerlowski resolved SOLR-12965.
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Resolution: Fixed
Fix Version/s: 7.7
master (8.0)
> Add JSON faceting support to SolrJ
> ----------------------------------
>
> Key: SOLR-12965
> URL: https://issues.apache.org/jira/browse/SOLR-12965
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Components: clients - java, SolrJ
> Affects Versions: 7.5, master (8.0)
> Reporter: Jason Gerlowski
> Assignee: Jason Gerlowski
> Priority: Major
> Fix For: master (8.0), 7.7
>
> Attachments: SOLR-12965.patch, SOLR-12965.patch, SOLR-12965.patch,
> SOLR-12965.patch
>
>
> SOLR-12947 created {{JsonQueryRequest}}, a SolrJ class that makes it easier
> for users to make JSON-api requests in their Java/SolrJ code. Currently this
> class is missing any sort of faceting capabilities (I'd held off on adding
> this as a part of SOLR-12947 just to keep the issues smaller).
> This JIRA covers adding that missing faceting capability.
> There's a few ways we could handle it, but my first attempt at adding
> faceting support will probably have users specify a Map<String, Object> for
> each facet that they wish to add, similar to how complex queries were
> supported in SOLR-12947. This approach has some pros and cons:
> The benefit is how general the approach is- our interface stays resilient to
> any future changes to the syntax of the JSON API, and users can build facets
> that I'd never thought to explicitly test. The downside is that this doesn't
> offer much abstraction for users who are unfamiliar with our JSON syntax-
> they still have to know the JSON "schema" to build a map representing their
> facet. But in practice we can probably mitigate this downside by providing
> "facet builders" or some other helper classes to provide this abstraction in
> the common case.
> Hope to have a skeleton patch up soon.
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