Text search (lucene) with tdbquery

[Samur Araujo]

Hi all, Is it possible to use tdbquery for textsearch?

I have configured, loaded and index the data using tdbloader and
jena.textindexer.

However, when I use tdbquery to query the database it seems to ignore the
lucene index.

I use the command:
tdbquery --desc textsearch.ttl --query search.rq

Do I need to provide any extra configuration? Do I need to compile jena
with special features?

The assembler is below:
@prefix :        <http://localhost/jena_example/#> .
@prefix rdf:     <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs:    <http://www.w3.org/2000/01/rdf-schema#> .
@prefix tdb:     <http://jena.hpl.hp.com/2008/tdb#> .
@prefix ja:      <http://jena.hpl.hp.com/2005/11/Assembler#> .
@prefix text:    <http://jena.apache.org/text#> .

## Example of a TDB dataset and text index
## Initialize TDB
[] ja:loadClass "org.apache.jena.tdb.TDB" .
tdb:DatasetTDB  rdfs:subClassOf  ja:RDFDataset .
tdb:GraphTDB    rdfs:subClassOf  ja:Model .

## Initialize text query
[] ja:loadClass       "org.apache.jena.query.text.TextQuery" .
# A TextDataset is a regular dataset with a text index.
text:TextDataset      rdfs:subClassOf   ja:RDFDataset .
# Lucene index
text:TextIndexLucene  rdfs:subClassOf   text:TextIndex .
# Solr index
text:TextIndexSolr    rdfs:subClassOf   text:TextIndex .

## ---------------------------------------------------------------
## This URI must be fixed - it's used to assemble the text dataset.

:text_dataset rdf:type     text:TextDataset ;
    text:dataset   <#dataset> ;
    text:index     <#indexLucene> ;
    .

# A TDB datset used for RDF storage
<#dataset> rdf:type      tdb:DatasetTDB ;
    tdb:location "DB2" ;
    tdb:unionDefaultGraph true ; # Optional
    .

# Text index description
<#indexLucene> a text:TextIndexLucene ;
    text:directory <file:Lucene2> ;
    ##text:directory "mem" ;
    text:entityMap <#entMap> ;
    .

# Mapping in the index
# URI stored in field "uri"
# rdfs:label is mapped to field "text"
<#entMap> a text:EntityMap ;
    text:entityField      "uri" ;
    text:defaultField     "text" ;
    text:map (
         [ text:field "text" ; text:predicate rdfs:label ]
         ) .


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