DeleteRule enum Null safety

Possible values for a delete rule in a Relate.

Constants

cascade → const DeleteRule

All objects with a foreign key reference to the deleted object will also be deleted.

const DeleteRule(1)
nullify → const DeleteRule

All objects with a foreign key reference to the deleted object will have that reference nullified.

const DeleteRule(2)
restrict → const DeleteRule

Prevents a delete operation if the would-be deleted ManagedObject still has references to this relationship.

const DeleteRule(0)
setDefault → const DeleteRule

All objects with a foreign key reference to the deleted object will have that reference set to the column's default value.

const DeleteRule(3)
values → const List<DeleteRule>

A constant List of the values in this enum, in order of their declaration.

const List<DeleteRule>

Properties

hashCode int
The hash code for this object. [...]
read-only, inherited
index int

The integer index of this enum.

final
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
inherited
toString() String
A string representation of this object. [...]
override

Operators

operator ==(Object other) bool
The equality operator. [...]
inherited