Product Specifications¶
Status¶
Normative Business Domain Specification
Purpose¶
This document defines Product Domain specifications.
Specifications are business predicates used to validate Product state and decisions.
IsProductIdentityComplete¶
Returns true when Canonical Product Identity contains enough stable information to represent a Product.
HasConflictingIdentifiers¶
Returns true when identifiers attached to a Product contradict each other.
HasConflictingObservations¶
Returns true when Observations contradict Canonical Product Identity or each other.
IsVariantOfProduct¶
Returns true when VariantAttributes describe a version of the same Product.
RequiresConflictReview¶
Returns true when Product evidence cannot safely establish or maintain identity.
CanAttachIdentifier¶
Returns true when an Identifier can be attached without violating Product invariants.
CanAttachObservation¶
Returns true when an Observation can be attached without silently mutating identity.
CanAttachVariant¶
Returns true when a Variant belongs to the Product and does not represent another Product.
IsConsistentProduct¶
Returns true when Product has no unresolved conflicts and satisfies identity coherence.
Specification Rules¶
Specifications must be:
- deterministic;
- side-effect free;
- testable;
- independent from infrastructure;
- independent from persistence;
- independent from frontend.
Architecture Decision¶
Decision: CERTIFIED.
Product specifications prepare the future executable business rules and tests.