DVSubject class final

How a model's rows reach the person they belong to.

A walk over the model graph needs this and nothing else: erasure and export both start from a subject and visit every row whose path leads to it.

Constructors

DVSubject.field(String column)

The row's column column holds the subject's id.

const

DVSubject.through(String column, {required String parent})

The row's column column holds the key of a row of the model named parent, and that row belongs to the subject — an order line through its order.

const

Properties

column → String?

final

hashCode → int

The hash code for this object.

no setter, inherited

parent → String?

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.

inherited

Constants

self → const DVSubject

The row is the subject: its key is the subject's id.