MssqlMorph class

How a polymorphic relation finds its other side.

SQL Server cannot express one of these as a foreign key — a column pointing at several tables cannot be constrained — so it is declared rather than discovered. That is not a limitation of this package; it is what makes the pattern polymorphic.

Annotations

• @immutable

Constructors

MssqlMorph({required String typeColumn, required String idColumn, String? typeValue, MssqlMorphUnknown unknown = MssqlMorphUnknown.error, Map<String, MssqlTableBinding<Object?>> targets = const <String, MssqlTableBinding<Object?>>{}})

Properties

hashCode → int

The hash code for this object.

no setter, inherited

idColumn → String

The column holding the other side's key.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

targets → Map<String, MssqlTableBinding<Object?>>

For MssqlRelationKind.morphTo: which table each type name denotes.

final

typeColumn → String

The column holding the other side's type name.

final

typeValue → String?

For MssqlRelationKind.morphOne and MssqlRelationKind.morphMany: the value that means "this table".

final

unknown → MssqlMorphUnknown

What to do with a discriminator the targets map does not name.

final

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited