Migration class abstract
Base class for database schema migrations.
Implementing classes should define the up and down methods to apply and revert schema changes respectively.
Each migration is executed within a transaction by the MigrationRunner. The provided DatabaseExecutor is the active transaction scope.
Constructors
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
down(
DatabaseExecutor db) → Future< void> - Reverts the schema changes within the given transaction scope.
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
-
up(
DatabaseExecutor db) → Future< void> - Applies the schema changes within the given transaction scope.
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited