552 questions
1
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22
views
How to select Analyzer for GraphDB Lucene Connector
In GraphDB 10.6 I need to search across English and French words ignoring accents. I am looking for ASCII folding.
I have tried this SPARQL to generate the Lucene connector, but I get 500: Error - ...
0
votes
0
answers
26
views
GraphDB 11.1 Talk to your graph (TTYG) external integration
In version 11.1 the external integration has changed in such a manner that the https://github.com/Ontotext-AD/ttyg-client is not working any more. How is the new TTYG setup intended to be used by ...
1
vote
1
answer
132
views
How does OWL2-RL handle date comparisons?
Is it possible to do "greater than date" that gets inferred by OWL2-RL in GraphDB? For ex: "Alice on date after 2024-02-10".
So for example:
:AliceTravelAfterToday a rdfs:Class ;
...
- 127
2
votes
0
answers
71
views
Order of bind/optional
Using GraphDB, I see the following behavior in an OWL2-RL optimized repo.
Probably I’m doing something wrong... but I fail to see what.
Probably not specific to GraphDB, but generic SPARQL question.
...
- 521
0
votes
0
answers
55
views
Metaphacts:GraphDB connection - Bad Request. Validation of repository config failed: could not read protocol version from server:
I am trying to connect graphDB repository from Metaphacts Docker version.
While trying to update default configurations, I am getting the error - "Bad Request. Validation of repository config ...
- 181
0
votes
1
answer
56
views
How is the authentication header in GraphDB constructed?
Can anyone tell me how I should programmatically construct an authentication request in GraphDB? In other systems I have made a basic authentication request by appending a base64-encoded username and ...
- 97
2
votes
0
answers
82
views
Converting URI's or string to unique integer in SPARQL
I am in the process of converting a graph to relational database. The schema of the RDB I am converting to requires each person to have a unique ID in the form of an integer. I have unique ID's for ...
- 247
1
vote
1
answer
85
views
GraphDB visual graph picks random rdfs:label as a node label
In my RDF data I am using several labels from SKOS. My concepts have exactly one skos:prefLabel, various skos:altLabels and some have skos:hiddenLabel. GraphDB allows me to visualise the graph, using ...
- 443
0
votes
1
answer
80
views
Graphdb preload with trig file resulting in error
I'm trying to preload a trig file which is around 24GB in terms of size.
Below is the command I am using.
docker run -v $(pwd)/graphdb-data:/opt/graphdb/home \
-v $(pwd)/preload:/opt/graphdb-...
- 2,156
1
vote
0
answers
34
views
How to recover from Error processing request (java.nio.BufferUnderflowException) after input of nt file?
After many successful imports of mixed RDF triple formats (ttl, nt, etc), the import chokes on one by getting into what seems like a very long (maybe infinite) loop.
When trying to connect to the ...
- 707
1
vote
0
answers
52
views
SPARQL insert/delete with GraghDB randomly fails
I've been having issues with SPARQL insert/delete statements in my GraphDB database. I believe my queries are correct and they generally work. However, occasionally they inexplicably fail. The data ...
- 769
1
vote
0
answers
77
views
GraphDB JDBC - from python?
I'm trying to setup a way to execute SQL queries on GraphDB pre-configured JDBC tables. I got it to work using a SQL engine like SQuirrel SQL Client, but so far I have not been successful in Python. I ...
- 247
0
votes
1
answer
156
views
Can't get Azure GPT Model to work for TTYG ChatGPT Retrival Plugin
I can't get my Azure OpenAI configured correctly, while I'm able to get everything (for the Talk To Your Graph Features, TTYG) working with my OpenAI API key. I can also confirm that my Azure OpenAI ...
- 3
0
votes
1
answer
148
views
GraphDB File Import UI Bug
When I try to import an RDF file through the import user data tab in the UI, I get a bug, and I'm unable to select any option for uploading, see screenshot. It worked in Firefox at one point.
I've ...
- 3
1
vote
0
answers
74
views
JDBC connector for docker compose
I've been trying to setup the MySQL JDBC connector following the instructions i found here but I'm afraid I'm still having issues with my setup.
I'm using a docker-compose with image version ontotext/...
- 11
0
votes
1
answer
67
views
Can I augment the GraphDB Entity Linking with my own graph db content
I have got this script from the Ontotext docs pages working. However, is there any way I can augment the knowledge base with data with my own local graphdb content, not just Wikidata and DBPedia. If ...
- 55
0
votes
0
answers
63
views
Parsing error in my graph stating that content is not allowed in prolog
I just inserted the following graph:
@prefix : <http://buchmann.ro#>.
@prefix xsd: <http://www.w3.org/2001/XMLSchema#>.
:moviesInfo
{
#some movie directors
:JamesCameron :directorOf :...
3
votes
1
answer
48
views
Expansive path expressions in quoted triples?
I'm trying to query something like wikipedia where objects connect to one another and the edges have the paragraph which links them. I'm hoping to wrap my head around the query portions before I ...
- 1,421
0
votes
0
answers
144
views
How to load data from Apache nifi to GraphDB
How we can load data from Apache nifi to GraphDB. I am not able to find any reference videos and content regarding loading data from Apache nifi to GraphDB.
I wanted to know how we can integrate ...
1
vote
0
answers
125
views
Selecting graphs in GraphDB using filter exists does not seem to work
I am running a query to select all graphs using filter exists, like this
SELECT * WHERE {
graph ?g { filter exists { ?s ?p ?o } }
}
but its response is
{
"head": {
"vars"...
- 1,555
2
votes
1
answer
150
views
Geosparql geof:distance measurement in query yields bad or no result
I am new to geosparql, I try to measure distances between location on earth. My training sample is a simple `turtle` file derived from a `graphDB` example. It contains two points only, one in Paris ...
- 21
1
vote
1
answer
235
views
Loading SNOMED ontology into GraphDB
Has any had success in loading the SNOMED ontology into GraphDB (desktop V10.4.1 on MacOSX)?
I have converted the original source into turtle format (result is 1.1GB and 10 million lines).
The load ...
0
votes
1
answer
46
views
How to setup GraphDB 10.x.x with JMX?
Prior to GraphDB 10.x, the documentation had references to setting up JMX. These docs have been removed from 10.x, leaving me wondering how to use JMX with this version.
Question: How can JMX be run ...
user9465104
1
vote
1
answer
153
views
How to call rule in graphDB?
I want to create an inference in my project, that the goal is to link when the rule is good the Subject V (Valeur) and the Object TM Type_Mesure.
So I have done this rule in protege ontology editor (...
- 11
2
votes
2
answers
336
views
GraphDB + Keycloak behind proxy
I am trying to deploy an application that uses Keycloak as an authentication service and GraphDB as repository. The application is running behind a proxy and I am having trouble setting up the OpenID ...
- 3,145