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Questions tagged [sesame]

Sesame was the old name of the Eclipse RDF4J Java framework for storing, querying and inferencing for RDF. It can be deployed as a web server or used as a Java library. Features include several query languages (SeRQL and SPARQL), inferencing support, and scalable persistence in an RDF database.

Overview

OpenRDF Sesame was the old name of Eclipse RDF4J, a Java framework for storing, querying and manipulating RDF data.

It can be deployed as a web server or used as a Java library. Features include several query languages (SeRQL and SPARQL 1.1), inferencing support, and fast RAM or scalable persistent storage. Additionally, the central APIs of Sesame are storage-independent and are supported by many third-party RDF database vendors.

Documentation Links

Documentation can be found on the Sesame project website, including Javadocs, tutorials, and other user/system documentation.

When to use this tag

Use only on questions about the legacy Sesame API (where the package names still start with org.openrdf). All questions about the Eclipse RDF4J API (org.eclipse.rdf4j) should be tagged with instead. Note that more general questions should often include or , since their answers might not depend essentially on the Sesame API.

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Sesame SPARQL endpoint read-only

How can I prevent my OpenRDF Sesame 2.6.5 RDF storage from the modification(INSERT/DELETE) via SPARQL endpoint? 'Select' queries will be done via POST requests. Forbid(via Apache Tomcat config. files for Sesame's WARs) the following SPARQL HTTP…
GML-VS
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openrdf-sesame database / triplestore in eclipse wtp project with tomcat

I want to use an openrdf-sesame triplestore in an Eclipse WTP project with a Tomcat server. I need to put some sample date to this triplestore to use it in my wtp project. If I use Tomcat without Eclipse, I have to deploy the two war-files…
BuZZ-dEE
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How can I integrate a semantic reasoner into Sesame?

I'm working on the API for TripleStore in Sesame. It has a reasoner which works with RDFs. As I also work with OWL. So I want to add another semantic reasoner such as Pellet or ITM ... It appears that the SAIL API supports customisable reasoning…
pseudo2188
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Loading verly large RDF file into openrdf Sesame ontology manager

I need to load very large ontology represented as N-triples file(1gb) to the openrdf Sesame application. I'm using the workbench interface to do that. I know that this file is too big to be loaded in one request. To get around that, I splitted my…
Kevin.
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What is the recommended way for adding individuals with SPARQL UPDATE?

I know that to add an individual (instance of a class) to a triple store is with the following insert statement: PREFIX indv: PREFIX ont: INSERT DATA { indv:individual_name…
whitefang1993
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Aligning two ontologies with an "adapter"

Simplifying a little, I have a domain ontology (D) expressed in OWL, which describes devices, their capabilities, configurations. Also, for each vendor I would like to have vendor-specific ontology (V), which would be connected to the domain one.…
Roman Susi
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Speed up Sesame load of rdf files

Is there any way to speed up the load of rdf files into Sesame? I have files ranging in size from a few of MB to a couple of GB in N-triple format. I have tried the three first approaches in Sesame Cook Book, but to no avail. I loaded a ~700MB file…
abondoa
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Why does the interpretation of division operation change among SPARQL processors of Jean and Sesame/OpenRDF?

The following SPARQL query produces different results when run on the SPARQL engines of two popular SDKs (Jena and Sesame / OpenRDF): PREFIX xsd: SELECT ?v1 ?v2 ?v3 ?v4 ?v5 ?v6 WHERE { BIND ( 1 …
Emre Sevinç
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DBPedia SPARQL

I could run SRARQL queries with LONG::IRI_RANK from this URL: http://dbpedia.org/sparql but I can't run it in my local OpenRDF Sesame repository loaded with 'person_en.nt' DBPedia dataset file(SPARQL parser error). Is it possible to use…
GML-VS
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How can I uses Sesame's RDFXMLParser in JRuby?

I am not very experienced in Java and JRuby but need to parse RDF data using Sesame's RDFXMLParser in JRuby and my python-minded brain just does not want to get into it. I have problems translating the Java example into JRuby. At first I don't know…
konrad
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Is it possible to combine those 2 SPARQL update queries into one?

I want to perform an update to remove the link (predicate) between two nodes in my RDF Store. The link is bidirectional (skos:narrower, and skos:broader). I would like to make a unique query, to insure both links are removed in a unique…
blackbox
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RDF--How do I make a transitive property shift, based on the rdf:type?

I'm trying to find a way to infer/propogate a property based on types to prevent name collision: :AOrder :Store :AStore ; a :OrderType ; :user :AUser . :AStore :name "Store Name"; a :StoreType :AUser :name "Some User"; …
Michael Kohout
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OpenRDF TurtleParser not handling prefixes properly

Wordnet 3.0 ( http://semanticweb.cs.vu.nl/lod/wn30/ ) is in Turtle format, and I am having trouble getting org.openrdf.rio.turtle.TurtleParser to parse the Manifest.ttl file ( https://gist.github.com/1181802 ). It looks like the parser isn't dealing…
espeed
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Where can I find a tutorial how to build a SAIL for sesame2 store?

I would like to implement a SAIL (for sesame2) that lets me to store triples in hsqldb. I have found basic documentation on the sesame website about: Sail API, Sail Query API, Repository API, but I can not find any tutorial (which explaining API…
Skarab
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RDF4J RIO UnsupportedRDFormatException when adding data to an HTTPRepository using a stand-alone application

I have an HTTPRepository initialised with a the URL to the repository. I use a RepositoryConnection to retrieve and add (weather) data to the repository. The data is retrieved from a web service, then transformed into RDF statements, and added to…
Dieudonné
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