KeyedArchive class

A container for a dynamic data object that can be decoded into Coding objects.

A KeyedArchive is a Map, but it provides additional behavior for decoding Coding objects and managing JSON Schema references ($ref) through methods like decode, decodeObject, etc.

You create a KeyedArchive by invoking KeyedArchive.unarchive and passing data decoded from a serialization format like JSON and YAML. A KeyedArchive is then provided as an argument to a Coding subclass' Coding.decode method.

    final json = json.decode(...);
    final archive = KeyedArchive.unarchive(json);
    final person = Person()..decode(archive);

You may also create KeyedArchives from Coding objects so that they can be serialized.

    final person = Person()..name = "Bob";
    final archive = KeyedArchive.archive(person);
    final json = json.encode(archive);

Mixed-in types

MapMixin<String, dynamic>

Constructors

KeyedArchive(dynamic mapData): Use unarchive instead.

Properties

entries → Iterable<MapEntry<String, dynamic>>: The map entries of this Map.
no setterinherited
hashCode → int: The hash code for this object.
no setterinherited
isEmpty → bool: Whether there is no key/value pair in the map.
no setterinherited
isNotEmpty → bool: Whether there is at least one key/value pair in the map.
no setterinherited
keys → Iterable<String>: The keys of this Map.
no setteroverride
length → int: The number of key/value pairs in the map.
no setterinherited
referenceURI ↔ Uri?: A reference to another object in the same document.
getter/setter pair
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
values → Iterable: The values of this Map.
no setterinherited

Methods

addAll(Map<String, dynamic> other) → void: Adds all key/value pairs of other to this map.
inherited
addEntries(Iterable<MapEntry<String, dynamic>> newEntries) → void: Adds all key/value pairs of newEntries to this map.
inherited
cast<RK, RV>() → Map<RK, RV>: Provides a view of this map as having RK keys and RV instances, if necessary.
inherited
castValues(Map<String, Cast> schema) → void: Typecast the values in this archive.
clear() → void: Removes all entries from the map.
override
containsKey(Object? key) → bool: Whether this map contains the given key.
inherited
containsValue(Object? value) → bool: Whether this map contains the given value.
inherited
decode<T>(String key) → T?: Returns the object associated by key.
decodeObject<T extends Coding>(String key, T inflate()) → T?: Returns the instance of T associated with key.
decodeObjectMap<T extends Coding>(String key, T? inflate()) → Map<String, T?>?: Returns a map of Ts associated with key.
decodeObjects<T extends Coding>(String key, T inflate()) → List<T>?: Returns a list of Ts associated with key.
encode(String key, dynamic value) → void: Encodes value into this object for key.
encodeObject(String key, Coding? value) → void: Encodes a Coding object into this object for key.
encodeObjectMap<T extends Coding>(String key, Map<String, T?>? value) → void: Encodes map of Coding objects into this object for key.
encodeObjects(String key, List<Coding?>? value) → void: Encodes list of Coding objects into this object for key.
forEach(void action(String key, dynamic value)) → void: Applies action to each key/value pair of the map.
inherited
map<K2, V2>(MapEntry<K2, V2> transform(String key, dynamic value)) → Map<K2, V2>: Returns a new map where all entries of this map are transformed by the given convert function.
inherited
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
putIfAbsent(String key, dynamic ifAbsent()) → dynamic: Look up the value of key, or add a new entry if it isn't there.
inherited
remove(Object? key) → dynamic: Removes key and its associated value, if present, from the map.
override
removeWhere(bool test(String key, dynamic value)) → void: Removes all entries of this map that satisfy the given test.
inherited
resolveOrThrow(ReferenceResolver coder) → void: Validates referenceURIs for this object and any objects it contains.
toPrimitive() → Map<String, dynamic>
toString() → String: A string representation of this object.
inherited
update(String key, dynamic update(dynamic value), {dynamic ifAbsent()?}) → dynamic: Updates the value for the provided key.
inherited
updateAll(dynamic update(String key, dynamic value)) → void: Updates all values.
inherited

Operators

operator ==(Object other) → bool: The equality operator.
inherited
operator [](Object? key) → dynamic: The value for the given key, or null if key is not in the map.
override
operator []=(String key, dynamic value) → void: Associates the key with the given value.
override

Static Methods

archive(Coding root, {bool allowReferences = false}) → Map<String, dynamic>: Archives a Coding object into a Map that can be serialized into format like JSON or YAML.
unarchive(Map<String, dynamic> data, {bool allowReferences = false}) → KeyedArchive: Unarchives data into a KeyedArchive that can be used by Coding.decode to deserialize objects.