RDF4J 6.0.0 Released

RDF4J 6.0.0 is a major release of the Eclipse RDF4J framework. It brings broad RDF 1.2 and SPARQL 1.2 support, moves the project to Java 25 and Jakarta, and delivers substantial improvements across HTTP, storage, federation, query execution, security, and deployment.

Highlights include:

• RDF 1.2 triple terms, literals with base direction, version announcements, and updated parsers, writers, protocols, and stores
• SPARQL 1.2 grammar and evaluation
• Support for LATERAL joins in SPARQL
• A Java 25 baseline and upgrades to Jakarta Servlet, Spring 7, Jetty 12, Tomcat 11, Lucene 10, Elasticsearch 9, and Jackson 3
• A client-neutral HTTP API with Apache HttpComponents 5 and JDK backends, plus gzip, deflate, Brotli, and Zstandard compression
• LMDB value-ID, data loading, reader-recovery, and cardinality-estimation improvements, together with grouped FedX source selection
• Query circuit breakers, slow-query logging and hardened XML processing

Before upgrading

RDF4J 6.0.0 requires Java 25 and contains backward-incompatible changes. Applications that embed RDF4J Server or Workbench must move from javax.servlet to Jakarta Servlet APIs. Code that supplies a custom Apache HttpClient 4 instance must migrate to the new client-neutral HTTP API and authentication interfaces.

See the release notes for the full list of changes and detailed upgrade guidance.

Links

• Download RDF4J
• Release notes
• All 46 completed issues

About

Eclipse RDF4J™ is a powerful Java framework for processing and handling RDF data. This includes creating, parsing, scalable storage, reasoning and querying with RDF and Linked Data. It offers an easy-to-use API that can be connected to all leading RDF database solutions. It allows you to connect with SPARQL endpoints and create applications that leverage the power of linked data and Semantic Web.