Hi Lewis, > I am very interested in DataImportHandler. I have data stored in an RDF db > and >wish to use this data to boost query results via Solr. I wish to keep this >data >stored in db as I have a web app which directly maintains this db. Is it >possible to use a DataImportHandler to read RDF data from db in memory
I don't think DIH can read from a triple store today. It can read from a RDBMS, RSS/Atom feeds, URLs, mail servers, maybe others... Maybe what you should be looking at is the ManifoldCF instead, although I don't think it can fetch data from triple stores today either. > without sending an index commit to Solr. As far as I can see > DataImportHandler >currently supports full and delta imports which mean I would be indexing. > I don't follow what you mean by this and how it relates to the first part. > So far I have yet to find a requestHandler which is able to read then store >data in memory, then use this data elsewhere prior to returning documents via >queryResponseWriter. I think you are talking about a custom SearchComponent that reads some data from somewhere (e.g. your triple store) and then uses it at search time for something. This sounds doable, although you didn't provide details. For example, we (Sematext) have implemented custom SearchComponents for e-commerce customers where frequently-changing information about product availability was fetched from external stores and applied to search results. Otis ---- Sematext :: http://sematext.com/ :: Solr - Lucene - Nutch Lucene ecosystem search :: http://search-lucene.com/
