DICE API Documentation/com.embabel.dice.storage/MetamodelSchema

MetamodelSchema

object MetamodelSchema : DiceStorageSchema

The constraints and node labels the metamodel governance stores need, as plain data.

A host, and the integration-test harness, registers this object as a DiceStorageSchema bean. That one registration makes the stores' MERGEs race-free, because Drivine ensures specs from it, and tells DiceOwnedSchema these labels are dice's own, which keeps governance from reporting its own bookkeeping as domain drift.

Properties

bookkeepingRelationshipTypes

open val bookkeepingRelationshipTypes: Set<String>

Relationship types this store writes between its own nodes. A whole-graph observation hides them, on the same grounds it hides the node labels: they are dice's bookkeeping, and no declared domain schema is expected to mention them.

LABELS

val LABELS: List<String>

Every node label the metamodel stores write, for test cleanup and for drift exclusion.

Functions

specs

open override fun specs(): List<<Error class: unknown class>>

Every MERGE these stores perform needs its key to be unique, because a MERGE is race-free only then. Without that, concurrent saves all miss the match, all create, and the history fills with duplicates.