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https://issues.apache.org/jira/browse/SOLR-12947?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16679615#comment-16679615
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Noble Paul commented on SOLR-12947:
-----------------------------------
use {{computeIfAbsent()}} to simplify the code
{code}
jsonRequestMap.putIfAbsent("filter", new ArrayList<Object>());
final List<Object> filters = (List<Object>) jsonRequestMap.get("filter");
filters.add(filterQuery);
{code}
as
{code}
((List)jsonRequestMap.computeIfAbsent("filter", s -> new
ArrayList<>())).add(filterQuery) ;
{code}
> SolrJ Helper for JSON Request API
> ---------------------------------
>
> Key: SOLR-12947
> URL: https://issues.apache.org/jira/browse/SOLR-12947
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Components: clients - java, SolrJ
> Affects Versions: 7.5
> Reporter: Jason Gerlowski
> Assignee: Jason Gerlowski
> Priority: Minor
> Attachments: SOLR-12947.patch, SOLR-12947.patch, SOLR-12947.patch
>
>
> The JSON request API is becoming increasingly popular for sending querying or
> accessing the JSON faceting functionality. The query DSL is simple and easy
> to understand, but crafting requests programmatically is tough in SolrJ.
> Currently, SolrJ users must hardcode in the JSON body they want their request
> to convey. Nothing helps them build the JSON request they're going for,
> making use of these APIs manual and painful.
> We should see what we can do to alleviate this. I'd like to tackle this work
> in two pieces. This (the first piece) would introduces classes that make it
> easier to craft non-faceting requests that use the JSON Request API.
> Improving JSON Faceting support is a bit more involved (it likely requires
> improvements to the Response as well as the Request objects), so I'll aim to
> tackle that in a separate JIRA to keep things moving.
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