DatumFieldCodec<V> class abstract

Converts between a Dart value of type V and its persisted form.

Constructors

DatumFieldCodec()

const

Properties

hashCode → int

The hash code for this object.

no setter, inherited

nullable → DatumFieldCodec<V?>

A null-passthrough wrapper for nullable field types (DatumFieldCodec.dateTimeIso.nullable for a DateTime? field).

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

decode(Object? raw) → V

Decodes a raw persisted value back into a V.

encode(V value) → Object?

Encodes value into a JSON/map-friendly representation.

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

Static Methods

enumByName<T extends Enum>(List<T> values) → DatumFieldCodec<T>

Enums persisted by .name (matching datum_generator).

infer<V>() → DatumFieldCodec<V>

Infers a codec for common types: int, double, num, bool, String, DateTime and their nullable variants.

jsonObject<T>(T fromJson(Map<String, dynamic> json), Map<String, dynamic> toJson(T value)) → DatumFieldCodec<T>

Nested objects persisted as JSON maps.

Constants

bigInt → const DatumFieldCodec<BigInt>

BigInt as its decimal string form.

dateTimeEpochMillis → const DatumFieldCodec<DateTime>

Epoch milliseconds on encode; same lenient decode as dateTimeIso.

dateTimeIso → const DatumFieldCodec<DateTime>

ISO-8601 strings on encode; lenient decode (DateTime, epoch-ms int, ISO-8601 string).

durationMicros → const DatumFieldCodec<Duration>

Duration as microseconds.

uri → const DatumFieldCodec<Uri>

Uri as its string form.