I am trying to create a random URL that can be accessed only once after the user logs in. I am using django-sesame to generate different URLs each t ...
I am trying to create a random URL that can be accessed only once after the user logs in. I am using django-sesame to generate different URLs each t ...
I am trying to build a federated RDF application based on rdf4j and FedX. What I need is to be able to: Optimize the querying plan and joining str ...
Title says it all. Is there something equivalent to SQL's prepared statements? ...
I'm getting the following error while running a query from Java with RDF4J on an EC2 server (it works fine locally). The relevant Java code: impor ...
I want to create an abstract repository to a federated store in AllegroGraph. I can connect to the repositories stored on different server. But when ...
Somehow I found some of the repositories(physics_base for example) in workbench are missing, but when I searched into the data path /.aduna/openrdf-se ...
As explained here, it is easy to clear an existing repository and load new datasets. However, due to the dialogue nature of the create command, I fail ...
How to get the prefix and namespace list for a vocabulary (or Graph) in Virtuoso, like we have it in Sesame: In Sesame, we are able to retrieve the p ...
I am loading an RDF rump from the web as an InputStream, which contains between 120 and 1500 triples. On average, clearing the context takes about hal ...
I am learning on RDF and framework to implement them from RDF4J. While exploring I came across two APIs that seem to be very similar. This is the one ...
If I have connection cxn to an empty triplestore and I say: I get Is there an RDF4J method for retrieving just the value of that literal? I jus ...
I am quite new to both Java and Sesame. I tried to create a repository in Sesame by programming in Eclipse. Unfortunately I am getting an error. I can ...
I did write a Java application using Sesame (RDF4j) API to test the availability of >700 SPARQL endpoints, but it takes hours to complete, so I'm t ...
My team is implementing a variation of Ceusters's Referent Tracking. In our implementation, the original URI for an entity can be changed (to somethin ...
I got a problem while configuring the Virtuoso Sesame HTTP Repository following the "Setup RDF4J or Sesame HTTP Repository" part of this web page, Vir ...
I am using an RDF4J native triplestore where several named graphs/models are stored. In my Java program, I am trying to retrieve a partial graph out o ...
I am trying to serialize a Model as JSON-LD and store it in a string variable using RDF4J. My code looks like this: It gives me a JSON-LD string, ...
In Apache Jena there is a way to append one model to another by just calling model1.add(model2), for example. Is this also possible with RDF4J in cas ...
I have an HTTPRepository initialised with a the URL to the repository. I use a RepositoryConnection to retrieve and add (weather) data to the reposito ...
I have a Tomcat instance running an openrdf-sesame environment. By default the location of my openrdf-sesame database configuration and data is at %AP ...