Re: jena-fuseki-lucene: no results returned

[Andy Seaborne]

On 27/02/15 14:07, Charles Abela wrote:

Hi,
I've managed to configure and run jena-fuseki. I used the
config-tdb-text.ttl and created a lucene index over the books.ttl example
(7 properties were indexed). However when I execute the query

     PREFIX text: <http://jena.apache.org/text#>
     PREFIX dc: <http://purl.org/dc/elements/1.1/>
     PREFIX book: <http://example.org/book/>
     PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
     PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>

     SELECT ?s
     { ?s dc:title ?x .
       ?s text:query  (dc:title 'Harry') ;
     }

no tuples are returned.

I've configured <#entMap> as follows:

How is the assembler connecting the dataset to the text index?

<#entMap> a text:EntityMap ;
     text:entityField      "uri" ;
     text:defaultField     "text" ;        ## Should be defined in the
text:map.
     text:map (
          [  text:field "text" ;
              text:predicate dc:title;
              text:analyzer [
                a text:StandardAnalyzer ;
                text:stopWords ("a" "an" "and" "but")
            ]
          ]
          ) .

am I on the right track here?

Yes

am I missing or doing something wrong?

Not obviously to me.

thanks in advance

Try some debugging: these queries will poke into the database:

   SELECT ?s { ?s dc:title ?x }

   SELECT ?s { ?s text:query  ('Harry') }

   SELECT ?s { ?s text:query  (dc:title 'Harry') }

        Andy