Key class

A complete or partial key.

A key can uniquely identify a datastore Entitys. It consists of a partition and path. The path consists of one or more KeyElements.

A key may be incomplete. This is useful when inserting Entitys which IDs should be automatically allocated.

Example of a fully populated Key:

var fullKey = new Key([new KeyElement('Person', 1),
                       new KeyElement('Address', 2)]);

Example of a partially populated Key / an incomplete Key:

var partialKey = new Key([new KeyElement('Person', 1),
                          new KeyElement('Address', null)]);

Constructors

Key(List<KeyElement> elements, {Partition partition = Partition.DEFAULT})

Key.fromParent(String kind, int id, {Key? parent})

factory

Properties

elements → List<KeyElement>

The path of KeyElements.

final

hashCode → int

The hash code for this object.

no setter, override

partition → Partition

The partition of this Key.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

override

Operators

operator ==(Object other) → bool

The equality operator.

override