TableMigration class
Contains instructions needed to run a complex migration on a table, using the steps described in Making other kinds of table schema changes.
For examples and more details, see the documentation.
- Annotations
-
- @experimental
Constructors
-
TableMigration(TableInfo<
Table, dynamic> affectedTable, {Map<GeneratedColumn< columnTransformer = const {}, List<Object> , Expression<Object> >GeneratedColumn< newColumns = const []})Object> > -
Creates migration description on the
affectedTable.
Properties
-
affectedTable
→ TableInfo<
Table, dynamic> -
The table to migrate. It is assumed that this table already exists at the
time the migration is running. If you need to create a new table, use
Migrator.createTable instead of the more complex TableMigration.
final
-
columnTransformer
→ Map<
GeneratedColumn< Object> , Expression<Object> > -
A map describing how to transform columns of the affectedTable.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
-
newColumns
→ List<
GeneratedColumn< Object> > -
A list of new columns that are known to not exist in the database yet.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
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