PayloadVersionRegistry<T> class

Registry of version-specific payload decoders for a single durable DTO type.

Use this when a payload schema evolves over time and you want one reusable place to define how each stored version should be decoded.

Constructors

PayloadVersionRegistry({required Map<int, T Function(Map<String, dynamic> payload)> decoders, int? defaultVersion})

Creates a version registry from explicit decoders.

const

Properties

decoders → Map<int, T Function(Map<String, dynamic> payload)>

Registered decoder versions.

no setter

defaultVersion → int?

Fallback version to use when a stored payload does not persist one.

final

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

decode(Map<String, dynamic> payload, int version, {String typeName = 'payload'}) → T

Decodes payload using the decoder registered for version.

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