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### 7.4 `RTCORBA.PriorityMapping`

PolyORB provides different implementations of this specification:

- `RTCORBA.PriorityMapping.Direct` maps CORBA priorities directly to native priorities. If the CORBA priority is not in `System.Priority'Range`, then the mapping is not possible.
- `RTCORBA.PriorityMapping.Linear` maps each individual native priority to a contiguous range of CORBA priorities, so that the complete CORBA priority range is used up for the mapping. See `rtcorba-prioritymapping-linear.adb` for more details.