Programming language: Scala
License: GNU General Public License v3.0 or later
Tags: Semantic Web    
Latest version: v0.8.1

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Build Status Gitter

The current published version 0.8.6, compiled with scala 2.13.6, is to be found on Maven Central under groupId net/bblfish/rdf/.

val banana = (name: String) => "net.bblfish.rdf" %% name % "0.8.6" excludeAll (ExclusionRule(organization = "org.scala-stm"))

//choose the packages you need for your dependencies
val bananaDeps = Seq("banana", "banana-rdf", "banana-rdf4j").map(banana)

Snapshot releases can be found on sonatype.org. To use these you will need at add the sonatype resolver to your sbt build:

resolvers += Resolver.sonatypeRepo("snapshots")

A Scala3 version is being developed on the scala-3 branch of this repository.

An RDF library in Scala

banana-rdf is a library for RDF, SPARQL and Linked Data technologies in Scala.

It can be used with existing libraries without any added cost. There is no wrapping involved: you manipulate directly the real objects. We currently support Jena, RDF4J and Plantain, a pure Scala implementation.


banana-rdf emphasizes type-safety and immutability, so it can come with some cost when the underlying implementation is very mutable (I'm looking at you, Jena and RDF4J). We try to keep a clear distinction between the core concepts and the enhanced syntax that Scala can give us.

[RDF](rdf/shared/src/main/scala/org/w3/banana/RDF.scala) itself is defined as a record of types. Implementations just have to plug their own types. And because types alone are not enough, we introduce the [RDFOps](rdf/shared/src/main/scala/org/w3/banana/RDFOps.scala) typeclass, which defines the mandatory operations that an RDF implementation must implement. [SparqlOps](rdf/shared/src/main/scala/org/w3/banana/SparqlOps.scala) does the same for SPARQL.

With banana-rdf, you get Diesel, a nice DSL to build and navigate within pointed graphs (graphs with a pointer to an inner node). You also get an abstraction for graph stores ([GraphStore](rdf/shared/src/main/scala/org/w3/banana/GraphStore.scala)), which do not have to be SPARQL engines ([SparqlEngine](rdf/shared/src/main/scala/org/w3/banana/SparqlEngine.scala)). Of course, you can serialize and deserialize most of the RDF syntaxes as well as JSON-LD (RDFa will come soon).

banana-rdf introduces the concept of binders, which let you bridge the Scala and RDF worlds. Most of the common datastructures are already available, and you can even map your own classes. Unlike usual ORM techniques, this does not rely on annotation or reflection.

Until we write thorough documentation, the best place to understand what you can do is to go through the test suite.

How to start geeking

To get going with banana-rdf and get a feel for how to use it the easiest and fastest way may well be to use it directly in the Ammonite shell as explained in the Scripting with Ammonite wiki page.

It always helps to have the code available, as there are a lot of useful examples in the test suite. You only need a recent version of Java, that's all:

$ git clone [email protected]:w3c/banana-rdf.git
$ cd banana-rdf
$ sbt

It's also easy to just build specific target platforms:

$ sbt +banana_js/test    # for javascript only 
$ sbt +banana_jvm/test   # for jvm only

( note: scala-js compilation uses more memory. see [travis.yml](.travis.yml) )

IDE Setup

banana-rdf works with both eclipse and IntelliJ IDEA.


Independent of your preferred IDE, optionally the add the following line to ~/.sbt/0.13/global.sbt to prevent the generation of empty source directories:

    unmanagedSourceDirectories in Compile ~= { _.filter(_.exists) }


Eclipse should work "out of the box" with the addition of the following global settings:

In ~/.sbt/0.13/global.sbt:

    unmanagedSourceDirectories in Compile ~= { _.filter(_.exists) }

In ~/.sbt/0.13/plugins/build.sbt

    addSbtPlugin("com.typesafe.sbteclipse" % "sbteclipse-plugin" % "2.5.0")

To generate eclipse project files, just run the command:

$ sbt eclipse

IntelliJ IDEA

IntelliJ IDEA works out of the box since 2016.


For discussions that don't fit in the issues tracker, you may try either

Code of Conduct

Banana-RDF contributors all agree to follow the W3C Code of Ethics and Professional Conduct.

If you want to take action, feel free to contact Alexandre Bertails [email protected]. You can also contact W3C Staff as explained in W3C Procedures.


This source code is made available under the W3C Licence. This is a business friendly license.

*Note that all licence references and agreements mentioned in the Banana-RDF README section above are relevant to that project's source code only.