| Class | Description | 
|---|---|
| Rdr | A top-level interface into the Rdr Classes | 
| RdrConclusion | This class represents the conclusion primitives of an RdrNode. | 
| RdrNode | A Ripple Down Rule Node implementation. | 
| RdrPair | This class holds the last evaluated node, and the last node that evaluated to true,
 as the result of a tree search | 
| RdrPrimitive | |
| RdrSet | Maintains a set of RdrTrees for a particular specification, for each of the following
  purposes (potentially):
   - selection: set of trees (RdrTreeSet), one for each worklet enabled task
   - exception:
      - spec pre-constraints: one RdrTree
      - spec post-constraints: one RdrTree
      - task pre-constraints: set of trees, one for each task in the specification
      - task post-constraints: set of trees, one for each task in the specification
      - task aborts: set of trees, one for each task in the specification
      - time-outs: set of trees, one for each task in the specification
      - unavailable resources: set of trees, one for each task in the specification
      - task constraint violations (i.e. | 
| RdrSetLoader | |
| RdrTree | A Ripple Down Rule tree implementation. | 
| RdrTreeSet | A set of rule trees (one per task) for a particular rule type | 
| Enum | Description | 
|---|---|
| RuleType | 
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