Sorry, correction: "language AND <any other words here>" and "language
OR <any other words here>" return same results as "language <any other
words here>" and same results as "language".
On 5.10.2020 14:27, Mikael Pesonen wrote:
Hi,
forgot to mention that AND and OR in query returns also no results.
I'm somewhat familiar with Lucene syntax but seems like none of the
syntax works with my setup.
There are no errors in Jena log, only the warning about
AnalyzingQueryParser.
On 5.10.2020 13:49, Lorenz Buehmann wrote:
It's Lucene syntax so a look into its documentation[1] could help.
Regarding multiple words, default Boolean operator is "OR", i.e.
"language <any other words here>" is equivalent to "language OR <any
other words here>". Obviously the result will contain all at least
documents with "language". Use AND operator if it must contain both.
Fuzzy queries and proximity queries are also explained in the Lucene
docs[1].
[1] https://lucene.apache.org/core/8_6_2/queryparser/index.html
On 05.10.20 11:22, Mikael Pesonen wrote:
I'm having trouble making other that one word queries.
For example "language <any other words here>" gives same result,
regardless of the other words.
Using quotes "\"some query\"" returns no results.
So I would like to make "fuzzy" multiword queries where for example
"language technology" returns different results that "language
management"
And also to query "\"language technology\"" which should return exact
matches.
I'm using latest Jena with AnalyzingQueryParser, which gives warning
WARN TextIndexLucene :: Deprecated query parser type
'AnalyzingQueryParser'. Defaulting to standard QueryParser
Also tried other parsers.
Config:
@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 skos:<http://www.w3.org/2004/02/skos/core#> .
@prefix fuseki:<http://jena.apache.org/fuseki#> .
@prefix vcard:<http://www.w3.org/2006/vcard/ns#> .
@prefix dcterms:<http://purl.org/dc/terms/> .
@prefix lsrm:<https://resource.lingsoft.fi/ns/resource_meta#> .
## 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 .
:text_dataset rdf:type text:TextDataset ;
text:dataset :my_dataset ;
text:index <#indexLucene> ;
.
# A TDB dataset used for RDF storage
:my_dataset rdf:type tdb:DatasetTDB ;
tdb:location "/home/text/tools/jena_data/" ;
# tdb:unionDefaultGraph true ; # Optional
.
# Text index description
<#indexLucene> a text:TextIndexLucene ;
text:directory <file:/home/text/tools/jena_text_index/> ;
text:entityMap <#entMap> ;
text:storeValues true ;
text:analyzer [ a text:StandardAnalyzer ] ;
text:queryAnalyzer [ a text:KeywordAnalyzer ] ;
text:queryParser text:AnalyzingQueryParser ;
text:multilingualSupport true ;
.
<#entMap> a text:EntityMap ;
text:defaultField "vcard_fn" ;
text:entityField "uri" ;
text:uidField "uid" ;
text:langField "lang" ;
text:graphField "graph" ;
text:map (
[ text:field "vcard_fn" ; text:predicate vcard:fn ]
[ text:field "skos_prefLabel" ; text:predicate
skos:prefLabel ]
[ text:field "skos_altLabel" ; text:predicate
skos:altLabel ]
[ text:field "lsrm_content" ; text:predicate lsrm:content]
[ text:field "dcterms_title" ; text:predicate dcterms:title]
[ text:field "dcterms_description" ; text:predicate
dcterms:description]
) .
<#service> rdf:type fuseki:Service ;
fuseki:name "/ds" ; #
http://host:port/ds-ro
fuseki:serviceQuery "query" ; # SPARQL query
service
fuseki:serviceQuery "sparql" ; # SPARQL query
service
fuseki:serviceUpdate "update" ; # SPARQL update
service
fuseki:serviceUpload "upload" ; # Non-SPARQL upload
service
fuseki:serviceReadWriteGraphStore "data" ; # SPARQL Graph
store protocol (read and write)
fuseki:dataset :text_dataset ;
.
