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Building is easy, from root directory:

$ docker compose up -d
$ mvn clean install

Understanding ActiveJDBC profiles.

There are a few DB - related profiles in the ActiveJDBC module:

• mysql
• mariadb
• oracle
• etc...

These profile contain JDBC parameters for respective databases. These connection parameters correspond to respective configurations in the docker-compose.yml file. Additionally, each profile has a property called db. This property is used by ActiveJDBCTest in order to initialize the database with tables and data before tests, depending on a profile (database) selected.

During tests, the file activejdbc/src/test/resources/jdbc.properties gets merged with properties from the current profile, and then used by the test infrastructure to connect to the right database and load the right SQL file.