DbMigration class abstract

A versioned, ordered database schema change.

Implementers

• CallbackDbMigration
• ChecksummedDbMigration

Constructors

DbMigration()

Creates a migration.

const

Properties

checksum → String?

Optional stable checksum used to detect edited released migrations.

no setter

hashCode → int

The hash code for this object.

no setter, inherited

name → String

A stable descriptive name.

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

version → int

The unique positive version number.

no setter

Methods

down(DbMigrationContext migration) → FutureOr<void>

Reverses this migration.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

up(DbMigrationContext migration) → FutureOr<void>

Applies this migration.

Operators

operator ==(Object other) → bool

The equality operator.

inherited