Supplier Module Specification¶

Purpose¶

The supplier module implements the Supplier Domain inside the Spring Boot Modulith. It owns supplier-specific profiles, capabilities, customer-supplier relationships, quotes, performance records, ratings, reviews, response-time records, preferred supplier state, and supplier trust assessments.

Owned Domain¶

Supplier owns supplier facts and relationship state. It does not own customer organization facts, marketplace listing workflow, contract delivery state, or AI reasoning sessions.

Owned Aggregates¶

Aggregate	Responsibility
Supplier Profile	Root aggregate for supplier identity, categories, regions, contacts, and status.
Supplier Capability Profile	Offerings, capability evidence, categories, coverage, and verification signals.
Supplier Relationship	Customer-specific supplier relationship, preferred status, notes, and trust context.
Supplier Quote Register	Quote records, validity, response behavior, and quote status.
Supplier Performance Register	Performance records, ratings, reviews, and previous contract references.
Supplier Trust Assessment	Trust score, risk signals, evidence, review status, and explainable trust level.

Owned Entities¶

Supplier Profile, Supplier Contact, Supplier Capability, Supplier Relationship, Supplier Quote, Supplier Performance Record, Supplier Rating, Supplier Review, Response Time Record, and Previous Contract Reference.

Owned Value Objects¶

SupplierProfileId, SupplierRelationshipId, SupplierStatus, SupplierRelationshipStatus, SupplierCategory, SupplierRegion, SupplierTrustLevel, SupplierRatingScore, ResponseTime, QuoteValidityPeriod, QuoteStatus, and VerificationSignalType.

Commands¶

Command	Responsibility
CreateSupplierProfile	Create a stable supplier profile.
UpdateSupplierProfile	Change supplier-owned profile fields.
AddSupplierCapability	Add supplier offering or capability.
CreateSupplierRelationship	Link customer organization to supplier relationship context.
MarkSupplierPreferred	Mark supplier preferred for a specific organization relationship.
RequestSupplierQuote	Start supplier quote tracking.
RecordSupplierQuote	Capture supplier quote amount, validity, and status.
RecordSupplierPerformance	Accept performance signal from contract or interaction context.
AddSupplierRating	Record structured rating with reason.
AddSupplierReview	Record attributable qualitative review.
RecordResponseTime	Capture response-time evidence.
UpdateSupplierTrust	Recalculate or approve trust state from evidence.
ReviewSupplierAIRecommendation	Accept, reject, or route AI supplier recommendation.

Queries¶

Query	Responsibility
GetSupplierProfile	Return supplier profile summary.
SearchSuppliers	Return supplier profiles by category, region, capability, and trust state.
GetSupplierCapabilities	Return capability and evidence summary.
GetSupplierRelationships	Return customer-specific supplier relationships.
GetPreferredSuppliers	Return preferred suppliers for an organization.
GetSupplierQuotes	Return quote records and validity state.
GetSupplierPerformance	Return performance and previous contract summaries.
GetSupplierRatingsAndReviews	Return rating and review summaries where authorized.
GetSupplierTrust	Return explainable trust state and evidence.

Application Services¶

SupplierProfileApplicationService, SupplierCapabilityApplicationService, SupplierRelationshipApplicationService, SupplierQuoteApplicationService, SupplierPerformanceApplicationService, SupplierRatingApplicationService, PreferredSupplierApplicationService, SupplierTrustApplicationService, and SupplierAIReviewApplicationService.

Domain Services¶

SupplierProfileCreationService, SupplierRelationshipService, SupplierCapabilityService, QuoteValidityService, PerformanceRecordingService, RatingReviewService, PreferredSupplierService, TrustUpdateService, and AIRecommendationReviewService.

Policies¶

Supplier Profile Creation Policy, Supplier Relationship Policy, Supplier Capability Policy, Quote Validity Policy, Performance Recording Policy, Rating Review Policy, Preferred Supplier Policy, Trust Update Policy, and AI Recommendation Review Policy.

Repositories¶

SupplierProfileRepository, SupplierContactRepository, SupplierCapabilityRepository, SupplierRelationshipRepository, SupplierQuoteRepository, SupplierPerformanceRepository, SupplierRatingRepository, SupplierReviewRepository, SupplierResponseTimeRepository, PreferredSupplierRepository, SupplierTrustRepository, and SupplierAuditRepository.

Events Published¶

SupplierProfileCreated, SupplierProfileUpdated, SupplierCapabilityAdded, SupplierRelationshipCreated, SupplierPreferred, SupplierQuoteRequested, SupplierQuoteReceived, SupplierPerformanceRecorded, SupplierRatingAdded, SupplierReviewAdded, and SupplierTrustUpdated.

Events Consumed¶

MarketplaceListingCreated, QuoteRequestCreated, QuoteRequestResponded, ContractWorkspaceCreated, SupplierCoordinationRecorded, ContractPerformanceUpdated, ContractClosedOut, OrganizationProfileUpdated, AIRecommendationProduced, and AdministrativePolicyChanged.

REST API Responsibility¶

The module owns API responsibilities for supplier profiles, supplier capabilities, supplier relationships, supplier quotes, supplier performance, ratings, reviews, trust state, and preferred supplier relationships. Final endpoint paths are deferred.

Database Ownership¶

Supplier owns conceptual persistence for supplier profiles, supplier contacts, supplier capabilities, supplier relationships, supplier quotes, supplier performance records, supplier ratings, supplier reviews, response-time records, previous contract references, preferred suppliers, trust assessments, and supplier audit logs.

Module Dependencies¶

Allowed dependencies are shared kernel identifiers, identity authorization context, organization customer context references, marketplace listing and quote-request events, contract performance events, notification quote and review triggers, analytics projections, and intelligence recommendation boundaries.

Forbidden Dependencies¶

Supplier must not mutate Organization profile facts, Marketplace listings or display state, Contract delivery records, Funding applications, Intelligence reasoning records, Notification delivery records, or Analytics projections. Marketplace must not become the canonical supplier trust store.

AIOS Interaction Boundary¶

AIOS may recommend suppliers, classify supplier capabilities, summarize performance, propose trust changes, or flag quote risks. Supplier policies decide whether those suggestions become supplier facts.

Security And Tenant Rules¶

Supplier profiles may be platform-visible, but relationships, preferred status, quotes, ratings, and reviews are tenant-scoped.
Quote data and performance feedback require organization context and authorization.
Trust state must be explainable and evidence-backed.
Reviews and ratings must preserve author, source, moderation, and audit context.
Cross-tenant supplier search must not expose customer-private notes or relationship state.

Test Strategy¶

Tests must cover profile creation, capability updates, relationship scoping, preferred supplier rules, quote validity, performance acceptance, rating moderation, trust calculation, AI recommendation review, event publication, idempotent consumption, tenant filtering, and Spring Modulith boundaries.

Future Microservice Extraction Notes¶

Supplier can be extracted as marketplace and supplier-network volume grows. Extraction requires stable supplier profile APIs, relationship APIs, quote events, performance event contracts from Contract, and clear separation from Marketplace display storage.

Mermaid Component Diagram¶

flowchart TD
    Api[supplier.api.rest]
    App[supplier.application.service]
    Command[supplier.application.command]
    Query[supplier.application.query]
    Domain[supplier.domain.model]
    Policy[supplier.domain.policy]
    Repo[supplier.infrastructure.persistence]
    Messaging[supplier.infrastructure.messaging]
    Organization[organization context]
    Marketplace[marketplace workflows]
    Contract[contract performance]
    Intelligence[intelligence recommendations]
    Analytics[analytics projections]

    Api --> App
    App --> Command
    App --> Query
    App --> Domain
    Domain --> Policy
    App --> Repo
    App --> Messaging
    App --> Organization
    App --> Marketplace
    App --> Contract
    App --> Intelligence
    Messaging --> Analytics