Database Abstraction

Steps to switch Database used by PF

1. Add jdbc driver to classpath of application.
2. Create policy_user user in database.
3. Create policy_admin database.

4. Edit the defaultConfig that is sent to start up your application and switch out the driver for the new database driver.

   Example DB Config

   "databaseProviderParameters": {
           "name": "PolicyProviderParameterGroup",
           "implementation": "org.onap.policy.models.provider.impl.DatabasePolicyModelsProviderImpl",
           "databaseDriver": "org.postgresql.jdbc.Driver",
           "databaseUrl": "jdbc:postgresql://localhost:5432/policyadmin",
           "databaseUser": "policy_user",
           "databasePassword": "cG9saWN5X3VzZXI=",
           "persistenceUnit": "PolicyMariaDb"
       },