This project adds a graphical user interface(GUI) for exporting data of OpenRefine projects in RDF format. The export is based on mapping the data to a template graph using the GUI. It also provides a service for reconciling data against SPARQL endpoints (e.g., DBpedia).

DOWNLOAD

Latest release

RDF Extension v1.5.0

INSTALL

Prerequisites

You need to have Java and OpenRefine installed on your machine.

• Java 11
• OpenRefine 3.8

From compiled release

1. If it does not exist, create a folder named extensions/rdf-extension under your user workspace directory for OpenRefine. The workspace should be located in the following places depending on your operating system (see OpenRefine FAQ for more details):
   • Linux ~/.local/share/OpenRefine
   • Windows C:/Documents and Settings//Application Data/OpenRefine OR C:/Documents and Settings//Local Settings/Application Data/OpenRefine
   • Mac OSX ~/Library/Application Support/OpenRefine
2. Unzip the downloaded release (ensuring it is a rdf-extension-x.x.x-*.zip not a source code .zip or tar.gz) into the extensions/rdf-extension folder (step 1). It is recommended that you have an active internet connection during the first run of the extension, as it will try to download a set of predefined vocabularies (rdf, rdfs, owl and foaf). You can add them later also.
3. Restart OpenRefine (OpenRefine usage instructions are provided in the user documentation)

To build from source

• Clone this extension repository to your local machine
• Checkout the main branch git checkout main
• Run mvn clean compile and mvn assembly:single
• Unpack the zip file created in the target directory to a sub-directory of the extensions folder of OpenRefine e.g., extensions/rdf-extension

If you have previously installed the extension you will need to replace it in the OpenRefine extensions directory with the newly built version.

Documentation

• Documentation Wiki