gistfile1.java

public class AuthService extends Service<AuthConfiguration> {

    // methods elided

    @Override
    protected void initialize(AuthConfiguration config, Environment environment) throws Exception {
        final DatabaseFactory factory = new DatabaseFactory(environment);
        final Database db = factory.build(config.getDatabaseConfiguration(), "postgresql");

        final UserDAO userDAO = db.onDemand(UserDAO.class);
        environment.addResource(new AuthResource(userDAO));
    }
}