When the calculation of a determination is triggered, the Engine queries rule object data configurations to determine what custom evidence types (both static and dynamic evidence) contain data that is required by CER for rules processing and supports the population of CER rule objects in memory for each of the relevant evidence types. The Engine contains a generic mechanism for populating the rule objects with the data from these custom evidence types (see Active Succession Set Rule Objects and Active Evidence Row Rule Objects).
Each rule class for a custom evidence type must ultimately extend the Engine-supplied PropagatorRuleSet.ActiveSuccessionSet or PropagatorRuleSet.ActiveEvidenceRow rule classes.
The population of CER rule objects for dynamic evidence types is handled automatically (see the section on "Generated Rule Sets" in the Cúram Dynamic Evidence Configuration Guide).