Jason Gerlowski created SOLR-12965:
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Summary: Add faceting support to JsonQueryRequest
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
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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