You'll need Jruby and a running MySQL server. Configure the MySQL connection in the db_transfer.rb file ( in the jdbc URL line ). You'll also need to have the MySQL db setup for ArchivesSpace ( doing the scripts/setup-database.sh|bat) with the same version that ran the derby db.
- run bundle install to get the required libraries.
- put your archivesspace derby db in directory named "data"
- make a directory named "exports"
- setup your mysql database, with the archivesspace schema ( use scripts/setup-database.sh|bat )
- run "bundle exec ruby db_transfer.rb"
Your derby data will be spit out into tsv files ( stored in the exports directory ), which will be then imported into your mysql DB.
Good luck.