News

We are very pleased to announce the release of RDF4J 3.1.0. This is a minor release, addressing over 60 issues, including a number of major new features and improvements. Some of the highlights:

• Integrated support for sophisticated federated querying through FedX.
• The ElasticSearchStore, a new experimental storage backend.
• QueryResult and RepositoryResult objects now implement Java Iterable, making client code simpler and smoother.
• Helper functions for stripping away context / named graph info from Statement and Model objects.

See the release notes for more details.

The second milestone build of the upcoming 3.1 release of RDF4J is now available for download.

RDF4J 3.1.0 is a minor release with a number of new features and improvements. Some of the highlights:

• Integrated support for sophisticated federated querying through FedX.
• The ElasticSearchStore, a new experimental storage backend.
• QueryResult and RepositoryResult objects now implement Java Iterable, making client code simpler and smoother.
• Helper functions for stripping away context / named graph info from Statement and Model objects.

This second milestone build is not yet feature-complete, but we are putting it out to receive early feedback on these two major new features, as well as on any of the other improvements we have put in.

• issues fixed in 3.1.0 Milestone 2
• issues planned for 3.1.0

We’re pleased to announce the release of RDF4J 3.0.4.

RDF4J 3.0.4 is a patch release with a number of bug fixes. See the release and upgrade notes for more details.

The first milestone build of the upcoming 3.1 release of RDF4J is now available for download.

RDF4J 3.1.0 is a minor release with a number of new features and improvements. Some of the highlights:

• Integrated support for sophisticated federated querying through FedX.
• The ElasticSearchStore, a new experimental storage backend.

This first milestone build is not yet feature-complete, but we are putting it out to receive early feedback on these two major new features, as well as on any of the other improvements we have put in.

• issues fixed in 3.1.0 Milestone 1
• issues planned for 3.1.0

We’re pleased to announce the release of RDF4J 3.0.3.

RDF4J 3.0.3 is a patch release with a number of bug fixes. See the release and upgrade notes for more details.

We are pleased to announce that Eclipse RDF4J has officially graduated from the incubation phase, and is now considered a mature Eclipse project. Graduating from Incubation is a recognition of the fact that the RDF4J project is an open-source project with an open and transparent process, an active and growing community, and Eclipse-quality technology.

We’re pleased to announce the release of RDF4J 3.0.2.

RDF4J 3.0.2 is a patch release with a number of bug fixes. See the release and upgrade notes for more details.

We are happy to announce the integration of FedX as federation engine into RDF4J.

FedX provides transparent federation of multiple SPARQL endpoints under a single virtual endpoint. As an example, a knowledge graph such as Wikidata can be queried in a federation with endpoints that are linked to Wikidata as an integration hub. In a federated SPARQL query in FedX, one no longer needs to explicitly address specific endpoints using SERVICE clauses. Instead, FedX automatically selects relevant sources, sends statement patterns to these sources for evaluation, and joins the individual results. FedX seamlessly integrates into RDF4J using the Repository API and can be used as a drop-in component in existing applications including the RDF4J Workbench.

RDF4J 2.5.5 is a hotfix release containing a single bug fix:

• #1548 DROP GRAPH on unknown graph deletes entire dataset on native store

This fix was also included in the 3.0.1 release that went out yesterday. This hotfix is specifically intended for projects that are not yet ready to upgrade to 3.0.

We’re pleased to announce the release of RDF4J 3.0.1.

RDF4J 3.0.1 is a patch release with a number of bug fixes, including a major issue in DROP GRAPH execution on native stoes. See the release and upgrade notes for more details.