: I don't think I'm quite getting this. Instead of going down that low, : could you make your own ResponseWriter? That has access to all : the information in the doc, and it seems like you could reach out to : the DB at that point and get your information merrily adding it to the : docs.
Agreed. In 3.x and below this type of logic is expected to live in the QueryResponseWriters. The new "Transformer" API in 4.x makes this easier to deal with ... so you can add/modify fields to SolrDocuments regardless of what response writer is in use. https://wiki.apache.org/solr/DocTransformers https://builds.apache.org/view/G-L/view/Lucene/job/Solr-trunk/javadoc/org/apache/solr/response/transform/DocTransformer.html https://issues.apache.org/jira/browse/SOLR-1566 -Hoss
