MergeContract class

CRDT mapping configuration for automatic generation or external references.

Defines how property-level CRDT merge strategies are specified for a root resource. CRDT mappings are RDF documents that declare which merge algorithm (LWW, OR-Set, etc.) should be used for each property when conflicts occur during synchronization.

Two modes are supported:

Generated CRDT mappings (default constructor):

MergeContracts(
  'https://myapp.example.com/mappings/note-v1#',
  label: 'Note CRDT Mapping',
  imports: [MergeContracts.coreV1],
)

The builder scans @CrdtLwwRegister, @CrdtOrSet, @CrdtImmutable annotations on properties and generates a CRDT mapping document with merge rules.

External CRDT mappings (.external() constructor):

MergeContract.external('https://vocab.example.org/mappings/standard-note-v1#')

References a manually authored or third-party CRDT mapping document. The builder does not generate merge rules for this resource; the mapping must be provided separately.

Constructors

MergeContract({String version = 'v1', String? path, String? label, String? comment, List<IriTerm> imports = const [MergeContracts.coreV1]})

const

Properties

comment → String?

Optional human-readable comment for generated CRDT mapping metadata.

final

hashCode → int

The hash code for this object.

no setter, inherited

imports → List<IriTerm>

Imported CRDT mapping documents for generated mc:DocumentMapping.

final

label → String?

Optional human-readable label for generated CRDT mapping metadata.

final

path → String?

Optional path component for generated merge contract IRI.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

version → String

Version identifier for the merge contract (e.g., 'v1', 'v2').

final

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited