Re-hi,
I just tried it out using ./fuseki-server --config=config-tdb-text.ttl
with the query
SELECT ?s
{ ?s dc:title ?x .
?s text:query (dc:title 'Stone') ;
}
and it worked fine.
I understood that I was starting the server wrongly. But what's the
difference?
If after starting the server with an in memory dataset, I upload the file.
Shouldn't it have worked just the same?
cheers
C
On Sat, Feb 28, 2015 at 5:21 PM, Charles Abela <[email protected]>
wrote:
>
>
> On Sat, Feb 28, 2015 at 4:28 PM, Andy Seaborne <[email protected]> wrote:
>
>> 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?
>>
>
> I load the books.ttl via the upload feature in the fuseki control panel.
>
>
>> How are you executing the query?
>>
> using the sprql query endpoint. Later on I will be doing this
> programmatically.
>
> C
>
>>
>> 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
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>
>>
>
