Key class

A unique identifier for an entity. If a key's partition ID or any of its path kinds or names are reserved/read-only, the key is reserved/read-only. A reserved/read-only key is forbidden in certain documented contexts.


Key.fromJson(Map _json)


partitionId PartitionId
Entities are partitioned into subsets, currently identified by a project ID and namespace ID. Queries are scoped to a single partition.
read / write
path ↔ List<PathElement>
The entity path. An entity path consists of one or more elements composed of a kind and a string or numerical identifier, which identify entities. The first element identifies a root entity, the second element identifies a child of the root entity, the third element identifies a child of the second entity, and so forth. The entities identified by all prefixes of the path are called the element's ancestors. [...]
read / write
hashCode → int
The hash code for this object.
read-only, inherited
runtimeType → Type
A representation of the runtime type of the object.
read-only, inherited


toJson() → Map<String, Object>
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed.
toString() → String
Returns a string representation of this object.


operator ==(dynamic other) → bool
The equality operator.