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@lawlesst
Last active November 15, 2021 16:45
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Minimal working Fuseki TDB with with full text search.

##Fuseki minimal full text search

See the Jena text query docs for full explanation. This is a minimal sample config for setting up full text search for an existing Fuseki TDB.

###indexing Indexing an existing loaded TB with:

java -cp fuseki-server.jar jena.textindexer --desc=./fuseki-fulltext-config.ttl

###sample query

PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX afn: <http://jena.hpl.hp.com/ARQ/function#>
PREFIX text:    <http://jena.apache.org/text#> 
PREFIX hub: <http://library.brown.edu/ontology/hub>
PREFIX schema: <http://schema.org/>


SELECT ?s ?label ?viaf ?auth
{ ?s text:query (rdfs:label 'mccauley' 25) ; 
     rdfs:label ?label ;
     rdf:type   ?type ;
     hub:viaf ?viaf .
  BIND(afn:localname(?s) as ?auth)
    
}
@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#> .
@prefix fuseki: <http://jena.apache.org/fuseki#> .
## Example of a TDB dataset and text index
## Initialize TDB
[] ja:loadClass "com.hp.hpl.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 "authority-db" ;
tdb:unionDefaultGraph true ; # Optional
.
# Text index description
<#indexLucene> a text:TextIndexLucene ;
text:directory <file:Lucene> ;
##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 ]
) .
[] rdf:type fuseki:Server ;
# Server-wide context parameters can be given here.
# For example, to set query timeouts: on a server-wide basis:
# Format 1: "1000" -- 1 second timeout
# Format 2: "10000,60000" -- 10s timeout to first result, then 60s timeout to for rest of query.
# See java doc for ARQ.queryTimeout
# ja:context [ ja:cxtName "arq:queryTimeout" ; ja:cxtValue "10000" ] ;
# Load custom code (rarely needed)
# ja:loadClass "your.code.Class" ;
# Services available. Only explicitly listed services are configured.
# If there is a service description not linked from this list, it is ignored.
fuseki:services (
<#service>
#<#service_text_tdb>
) .
<#service> rdf:type fuseki:Service ;
fuseki:name "authority" ; # http://host:port/tdb
fuseki:serviceQuery "query" ; # SPARQL query service
fuseki:serviceQuery "sparql" ; # SPARQL query service
fuseki:serviceUpdate "update" ; # SPARQL query service
fuseki:serviceUpload "upload" ; # Non-SPARQL upload service
fuseki:serviceReadWriteGraphStore "data" ; # SPARQL Graph store protocol (read and write)
#fuseki:dataset <#dataset> ;
fuseki:dataset :text_dataset ;
.
@vidwan-raj
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Can you provide me a sample video demo to do text indexing in fuseki using WAR file in tomcat for sample data , When we are trying to load the data it shows zero triples and SPARQL response is not as expected.

@jesushd12
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Can you provide me a sample video demo to do text indexing in fuseki using WAR file in tomcat for sample data , When we are trying to load the data it shows zero triples and SPARQL response is not as expected.

Hello I'm having the same problem. have you solve it?

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