Domain Implementation Results

Type Count Summary

Value Objects (16 types)

Classification	Type	Base Class	Validation Rules
String VO	ModelName	SimpleValueObject<string>	NotNull, NotEmpty, Trim, MaxLength(100)
String VO	ModelVersion	SimpleValueObject<string>	NotNull, NotEmpty, SemVer regex
String VO	ModelPurpose	SimpleValueObject<string>	NotNull, NotEmpty, Trim, MaxLength(500)
String VO	EndpointUrl	SimpleValueObject<string>	NotNull, NotEmpty, URI format
String VO	IncidentDescription	SimpleValueObject<string>	NotNull, NotEmpty, Trim, MaxLength(2000)
String VO	ResolutionNote	SimpleValueObject<string>	NotNull, NotEmpty, Trim, MaxLength(2000)
Comparable VO	DriftThreshold	ComparableSimpleValueObject<decimal>	Between(0.0, 1.0)
Comparable VO	AssessmentScore	ComparableSimpleValueObject<int>	Between(0, 100), IsPassing
Smart Enum	RiskTier	SimpleValueObject<string>	4 values, RequiresComplianceAssessment, IsProhibited
Smart Enum	DeploymentStatus	SimpleValueObject<string>	6 values, transition map
Smart Enum	DeploymentEnvironment	SimpleValueObject<string>	2 values (Staging, Production)
Smart Enum	AssessmentStatus	SimpleValueObject<string>	5 values, transition map
Smart Enum	CriterionResult	SimpleValueObject<string>	3 values (Pass, Fail, NotApplicable)
Smart Enum	IncidentSeverity	SimpleValueObject<string>	4 values, RequiresQuarantine
Smart Enum	IncidentStatus	SimpleValueObject<string>	4 values, transition map

Aggregate Roots (4 types)

Aggregate	Interfaces	Core Patterns
AIModel	IAuditable, ISoftDeletableWithUser	Dual factory, Soft Delete guard
ModelDeployment	IAuditable	Dual factory, state transitions
ComplianceAssessment	IAuditable	Dual factory, child entity management
ModelIncident	IAuditable	Dual factory, state transitions

Child Entity (1 type)

Entity	Parent Aggregate	Role
AssessmentCriterion	ComplianceAssessment	Assessment criterion, result recording

Domain Services (2 types)

Service	Cross-Domain Targets	Role
RiskClassificationService	AIModel	Purpose keyword -> risk tier classification
DeploymentEligibilityService	AIModel, Assessment, Incident	3-step deployment eligibility verification

Specifications (12 types)

Specification	Target Aggregate	Purpose
ModelNameSpec	AIModel	Model name search
ModelRiskTierSpec	AIModel	Risk tier filter
DeploymentByModelSpec	ModelDeployment	Deployment lookup by model
DeploymentActiveSpec	ModelDeployment	Active deployment filter
DeploymentQuarantinedSpec	ModelDeployment	Quarantined deployment filter
AssessmentByModelSpec	ComplianceAssessment	Assessment lookup by model
AssessmentByDeploymentSpec	ComplianceAssessment	Assessment lookup by deployment
AssessmentPendingSpec	ComplianceAssessment	Incomplete assessment filter
IncidentByModelSpec	ModelIncident	Incident lookup by model
IncidentByDeploymentSpec	ModelIncident	Incident lookup by deployment
IncidentOpenSpec	ModelIncident	Unresolved incident filter
IncidentBySeveritySpec	ModelIncident	Incident filter by severity

Domain Events (18 types)

Aggregate	Event	Trigger
AIModel	RegisteredEvent	Model registration
AIModel	RiskClassifiedEvent	Risk tier reclassification
AIModel	VersionUpdatedEvent	Version update
AIModel	UpdatedEvent	Information update
AIModel	ArchivedEvent	Model archive
AIModel	RestoredEvent	Model restore
ModelDeployment	CreatedEvent	Deployment creation
ModelDeployment	SubmittedForReviewEvent	Review submission
ModelDeployment	ActivatedEvent	Deployment activation
ModelDeployment	QuarantinedEvent	Deployment quarantine
ModelDeployment	RemediatedEvent	Quarantine remediation
ModelDeployment	DecommissionedEvent	Deployment decommission
ComplianceAssessment	CreatedEvent	Assessment creation
ComplianceAssessment	CriterionEvaluatedEvent	Criterion evaluation
ComplianceAssessment	CompletedEvent	Assessment completion
ModelIncident	ReportedEvent	Incident reporting
ModelIncident	InvestigatingEvent	Investigation start
ModelIncident	ResolvedEvent	Incident resolution

Repository Interfaces (4 types)

Repository	Additional Methods
IAIModelRepository	Exists(spec), GetByIdIncludingDeleted(id)
IDeploymentRepository	Exists(spec), Find(spec)
IAssessmentRepository	Exists(spec), Find(spec)
IIncidentRepository	Exists(spec), Find(spec)

Domain Layer Structure

AiGovernance.Domain/
├── SharedModels/
│   └── Services/
│       ├── RiskClassificationService.cs
│       └── DeploymentEligibilityService.cs
└── AggregateRoots/
    ├── Models/
    │   ├── AIModel.cs
    │   ├── IAIModelRepository.cs
    │   ├── ValueObjects/ (ModelName, ModelVersion, ModelPurpose, RiskTier)
    │   └── Specifications/ (ModelNameSpec, ModelRiskTierSpec)
    ├── Deployments/
    │   ├── ModelDeployment.cs
    │   ├── IDeploymentRepository.cs
    │   ├── ValueObjects/ (DeploymentStatus, DeploymentEnvironment, EndpointUrl, DriftThreshold)
    │   └── Specifications/ (DeploymentByModelSpec, DeploymentActiveSpec, DeploymentQuarantinedSpec)
    ├── Assessments/
    │   ├── ComplianceAssessment.cs
    │   ├── AssessmentCriterion.cs
    │   ├── IAssessmentRepository.cs
    │   ├── ValueObjects/ (AssessmentScore, AssessmentStatus, CriterionResult)
    │   └── Specifications/ (AssessmentByModelSpec, AssessmentByDeploymentSpec, AssessmentPendingSpec)
    └── Incidents/
        ├── ModelIncident.cs
        ├── IIncidentRepository.cs
        ├── ValueObjects/ (IncidentSeverity, IncidentStatus, IncidentDescription, ResolutionNote)
        └── Specifications/ (IncidentByModelSpec, IncidentByDeploymentSpec, IncidentOpenSpec, IncidentBySeveritySpec)

Test Status

Unit tests are organized into four categories: Value Object, Aggregate, Domain Service, and Architecture. A total of 268 tests run across 2 assemblies for the entire solution.

Category	Test File Count	Test Target
Value Objects	15	Creation, validation, Smart Enum transition rules for 16 VO types
Aggregates	4	Create, state transitions, guards, CreateFromValidated for 4 Aggregate types
Domain Services	1	RiskClassificationService keyword classification
Architecture	3	Domain/Application architecture rules, layer dependencies
Total	23

The 268 tests include both unit tests (AiGovernance.Tests.Unit) and integration tests (AiGovernance.Tests.Integration).

In the next step, we define how these domain rules are orchestrated into use cases in the Application Business Requirements.