I thought I had linked to this but apparently not: https://github.com/epimorphics/ppd-text-index
is partial (eg deals only with Lucene) but adequate to our needs code that uses the extension to jena-text seen in https://github.com/epimorphics/jena-config-doc-producer to do cross-field conjunctive queries using a specialised TextDocProducer. Chris -- "We are on the brink of a new era, if only --" /The Beiderbeck Affair/ Epimorphics Ltd, http://www.epimorphics.com Registered address: Court Lodge, 105 High Street, Portishead, Bristol BS20 6PT Epimorphics Ltd. is a limited company registered in England (number 7016688)