Hi all,
FYI, we’re starting to work on this proposal https://github.com/geonetwork/core-geonetwork/wiki/WFS-Filters-based-on-WFS-indexing-with-SOLR with Florent and Julien Acroute.
The work will be done in the solr-wfs-indexing (https://github.com/geonetwork/core-geonetwork/tree/solr-wfs-indexing) branch published on the geonetwork repository.
Cheers.
Francois