Jason Gerlowski 1b084db901 SOLR-12947: Add MapWriter compatibility to JsonQueryRequest
JsonQueryRequest had `setQuery` methods that took in a query either as a
String or as a Map.  But no such overload for MapWriter, a SolrJ
interface used to transmit Maps via "push writing" over the wire.  This
commit adds an overload taking this type, so that users can specify
their queries this way as well.

This commit also changes JsonQueryRequest writes out the request, to
ensure it uses "push writing" in non-MapWriter cases as well.
2018-11-07 21:40:06 -05:00
..