Create rule DDF00022: A relationship cannot exist between an instance of a class and itself

[ASL-rmarshall]

Create multi-target relationship rule defined for #115

[ASL-rmarshall]

Split into two separate rules, which both need to be reviewed:

• DDF00021: check that the id value is not the same as previousId, nextId and defaultConditionId (when specified). See #116
• DDF00022: check that the id value is not the same as an value in childrenIds (when specified).

[ASL-rmarshall]

With the inclusion of rel_type and referenced instances in the datasets created by the USDM conversion, it is no longer necessary to split this rule. Rule DDF00021 has been updated to cover all scenarios, so DDF00022 can be deleted. Saving a copy of the rule definition before deleting from the Rules Editor:

Authorities:
  - Organization: 'CDISC'
    Standards:
      - Name: 'DDF'
        References:
          - Citations:
              - Cited Guidance: 'USDM'
                Document: "USDM v2.6"
            Origin: 'DDF Conformance Rules'
            Rule Identifier:
              Id: 'DDF00022'
              Version: '1'
            Validator Rule Message: 'The relationship links an entity instance to itself,
              which is invalid'
            Version: '1.0'
        Version: '2'
Check:
  all:
    - name: parent_attr
      operator: equal_to
      value: childrenIds
    - name: value
      operator: equal_to
      value: parent_id
Core:
  Status: Published
  Version: '1'
  Id: CORE-000415
Description: "A relationship cannot link an instance of a class to itself. If
  specified, any value of childrenIds must not be the same as the value of id."
Executability: Fully Executable
Outcome:
  Message: "The 'children' relationship links an entity instance to itself
    (parent_attr = 'childrenIds' and value = parent_id), which is invalid"
  Output Variables:
    - parent_entity
    - parent_id
    - parent_attr
    - value
Rule Type: Record Data
Scope:
  Entities:
    Include:
      - Multiple_Values
Sensitivity: Record