This is a skeleton of OpenRefine extension for Wikimedia Commons, in the form of an independent Maven project. It works with OpenRefine 3.6+.
Run
mvn package
This creates a zip file in the target
folder, which can then be installed in OpenRefine.
To avoid having to unzip the extension in the corresponding directory every time you want to test it, you can also use another set up: simply create a symbolic link from your extensions folder in OpenRefine to the local copy of this repository. With this setup, you do not need to run mvn package
when making changes to the extension, but you will still to compile it with mvn compile
if you are making changes to Java files, and restart OpenRefine if you make changes to any files.