Stack Overflow
Stack Overflow

Questions tagged [stardog]

Questions related the Stardog RDF database.

Stardog is a fast, lightweight, RDF database: it supports ; HTTP and the SNARL protocol for remote access and control; as a data model; and for inference and data analytics. It also has advanced features such as full-text search via integration with and integrity constraints.

There is a mailing list and extensive documentation available online.

Related tags :

97 questions
1
vote
1 answer

SPARQL Update the type of an individual

I have a simple ontology which is structured that way: | Cell | CellFree | CellTree | CellPlayer My app is using Stardog and I want to dynamically update the type of an individual which is at the beginning a Cell and needs to be updated…
pioupiou1211
  • 353
  • 4
  • 16
1
vote
1 answer

Error when starting Stardog server

It worked well a few weeks ago, but now I am having problems just when starting the server with stardog-admin.bat server start. When I do it, I get the following error: WARNING: An illegal reflective access operation has occurred WARNING: Illegal…
Quico Llinares Llorens
  • 227
  • 2
  • 17
1
vote
0 answers

Module name "stardog" has not been loaded yet for context: _. Use require([])

I'm trying to use Javascript for querying my local Stardog database. To do this, I'm using the code from here: https://gist.github.com/ronmichael/4281566. I've installed npm, stardog, require without problems. However, when I try to run the…
sander
  • 1,340
  • 1
  • 10
  • 20
1
vote
1 answer

STARDOG: Cannot configure geospatial using stardog.properties

I am attempting to configure stardog to handle geospatial functions. I have been following the instructions and I have placed the properties file as directed in the home folder. I now want to enable geospatial functions. I set spatial.use.jts=true…
Kris
  • 63
  • 7
1
vote
2 answers

How can I tell Stardog to use inference when querying it through SPARQLwrapper?

I have a SPARQL query that returns results in the Stardog query panel when inference is enabled, but not when it's disabled. When I try the query through python with SPARQLwrapper, I get no results. I tried with a different query, which doesn't rely…
user7940491
  • 11
  • 1
1
vote
1 answer

GEOSPARQL "within" and stardog

I'm struggling with the geosparql in particular geo:Within. The documentation I can find at: open gis documentation states that it needs a geo:SpatialObject and that a geo:Feature is a type of geo:SpatialObject. I have a number of features which…
ChrisUK
  • 66
  • 5
1
vote
0 answers

Using sparql SERVICE between Stardog and Fuseki

I am new to Fuseki and Stardog, and I am trying to use a sparql SERVICE query to access some of the information in a Jena Fuseki (2.4.0) server with the Stardog (4.2) interface. The issue I am having is that every query I try ends up with an…
Gustavo Moreira
  • 71
  • 5
1
vote
0 answers

SPARQL: Federated query gives no result when using local file, while same query on dbpedia does

the local file uploaded on stardog: @prefix dbo: . @prefix dbr: . dbr:United_States dbo:leader dbr:John_Roberts , dbr:Joe_Biden , dbr:Barack_Obama , dbr:Paul_Ryan…
Jerry
  • 11
  • 1
1
vote
2 answers

Parsing SPARQL results to obtain hostname

I have a huge list of triples like this: ?s ex:url ?url Where ?url can be: www.ex.com/data/1.html www.ex.com/data/2.html www.google.com/search ... Is it possible, with a SPARQL query, to filter the query somehow and obtain the distinct list of…
user1156544
  • 1,725
  • 2
  • 25
  • 51
1
vote
1 answer

stardog sesame remote access - class org.openrdf.repository.base.AbstractRepository not found?

I am trying to integrate my application with stardog. The application accesses already other RDF repositories in Java via sesame remoteRepository interface. Stardog writes in http://docs.stardog.com/#_using_sesame that this can be achieved via a use…
Fabio Ricci
  • 89
  • 1
  • 9
1
vote
2 answers

JMeter: SPARQL Query HTTP Request not updating DB

I have recently started working with SPARQL and JMeter. I was trying to load test Stardog. For that I used Jmeter and ran a SPARQL query which updates a value in the database, using HTTP Request. I tried running the Query in Stardog web interface…
Sagar.m
  • 13
  • 3
1
vote
0 answers

StarDog Login error

i'm trying to login into Stardog tool with username : admin password : admin sounds straightforward but i do get a login error saying [Exception... "Failure" nsresult: "0x80004005 (NS_ERROR_FAILURE)" location: "JS frame ::…
Azhagu Nagappan
  • 11
  • 3
1
vote
1 answer

How to use Sparql Contains to match similar String?

I'm trying to grab some definition in dbpedia inside my thesaurus. Although can find country that have a label that match my country, i don't get all of them. So i try to match similar label with contains but it does not work. Any idea why.…
MaatDeamon
  • 9,532
  • 9
  • 60
  • 127
1
vote
2 answers

Solve Einstein's riddle with Stardog reasoner?

Is it possible to solve Einstein's riddle (aka Zebra puzzle) with the Stardog reasoner? I.e. the following query does not yield the expected result einsteins_riddle_en:Old_Gold stardog query myDatabase --reasoning "SELECT ?o WHERE…
rmv
  • 3,195
  • 4
  • 26
  • 29
1
vote
1 answer

HACluster Config for Stardog

I have three machines running Stardog in High Availability Cluster configuration -what's the endpoint URL I should use to read and write to Stardog, and where should I configure it? I intend to use the SNARL API/protocol.
Vinoth Kumar Asaithambi
  • 181
  • 16
1 2
3
4 5 6 7