On 28/02/15 14:25, Charles Abela wrote:
Re-hi,
still at it with no success, unfortunately.
This does not look right:
> iii. I start the server
> ./fuseki-server --update --mem /ds
That's an in-memory dataset.
I don't see where it's getting any data from, let alone some triples.
I would have expected:
./fuseki-server --config=config-tdb-text.ttl
Did you do anything else after starting the server?
How are you executing the query?
Andy
The process I'm following is the following:
i. I'm calling the tdb loader which executes fine as below:
java -cp fuseki-server.jar tdb.tdbloader --loc=DB data/books.ttl
INFO -- Start triples data phase
INFO ** Load into triples table with existing data
INFO -- Start quads data phase
INFO ** Load empty quads table
INFO Load: data/books.ttl -- 2015/02/28 15:04:33 CET
INFO -- Finish triples data phase
INFO ** Data: 17 triples loaded in 0.47 seconds [Rate: 36.17 per
second]
INFO -- Finish quads data phase
INFO -- Start triples index phase
INFO -- Finish triples index phase
INFO -- Finish triples load
INFO ** Completed: 17 triples loaded in 0.57 seconds [Rate: 30.04
per second]
INFO -- Finish quads load
ii. Im then calling the textindexer which seems to execute of as well,
since it says that 7 properties were indexed:
java -cp fuseki-server.jar jena.textindexer
--desc=config-tdb-text.ttl
INFO 7 (7 per second) properties indexed
iii. I start the server
./fuseki-server --update --mem /ds
15:05:27 INFO Dataset: in-memory15:05:28 INFO Dataset path = /ds
15:05:28 INFO Fuseki 1.1.1 2014-10-02T16:36:17+0100
15:05:28 INFO Started 2015/02/28 15:05:28 CET on port 3030
When I execute the query without including text: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 . }
the query executes fine and the result is all the book instances
however whenever I include ....text:query in any of the mentioned ways, the
result returns nothing.
the assembler I;'m using is the config-tdb-text as follows:
# TDB
[] ja:loadClass "com.hp.hpl.jena.tdb.TDB" .
tdb:DatasetTDB rdfs:subClassOf ja:RDFDataset .
tdb:GraphTDB rdfs:subClassOf ja:Model .
# Text
[] ja:loadClass "org.apache.jena.query.text.TextQuery" .
text:TextDataset rdfs:subClassOf ja:RDFDataset .
#text:TextIndexSolr rdfs:subClassOf text:TextIndex .
text:TextIndexLucene rdfs:subClassOf text:TextIndex .
##------------------------------------------------------------------
<#service_text_tdb> rdf:type fuseki:Service ;
rdfs:label "TDB/text service" ;
fuseki:name "ds" ;
fuseki:serviceQuery "query" ;
fuseki:serviceQuery "sparql" ;
fuseki:serviceUpdate "update" ;
fuseki:serviceUpload "upload" ;
fuseki:serviceReadGraphStore "get" ;
fuseki:serviceReadWriteGraphStore "data" ;
fuseki:dataset <#books> ;
.
<#books> rdf:type text:TextDataset ;
text:dataset <#dataset> ;
##text:index <#indexSolr> ;
text:index <#indexLucene> ;
.
<#dataset> rdf:type tdb:DatasetTDB ;
tdb:location "DB" ;
##tdb:unionDefaultGraph true ;
.
<#indexLucene> a text:TextIndexLucene ;
text:directory <file:Lucene> ;
##text:directory "mem" ;
text:entityMap <#entMap> ;
.
<#entMap> I've defined in my previous email.
any ideas as to why I'm not getting any results is greatly appreciated.
cheers
On Fri, Feb 27, 2015 at 11:43 PM, Charles Abela <[email protected]>
wrote:
I did not understand your question re the assembler and how it is
connecting the dataset to the index. Can you elaborate pls?
Re the queries I had tried them already. This one
SELECT ?s { ?s dc:title ?x }
returned fine, while others did not return anything.
On Fri, Feb 27, 2015 at 9:42 PM, Andy Seaborne <[email protected]> wrote:
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
