Issue Summary

Adding an invalid set of users to a role on Assets can cause an invalid null entry in an Oracle database and result in a NullPointerException when loading the roles configuration for Assets.

This is reproducible on Data Center: (yes) / (no)

Steps to Reproduce

1. Navigate to Assets general configuration
2. Select 'Roles'
3. Add invalid user names
4. Update

Expected Results

Invalid users are not saved

Actual Results

Invalid users are saved and the parsing of them results in a null in the database.

Workaround

Remove the null TYPE_PARAMETER entries from the AO_8542F1_IFJ_ROLE_ACTOR