MigrationRule (org.qi4j.extension.migration 2.1 API)

```
public class MigrationRule
extends AbstractMigrationRule
```
Migration rule that does not apply to a specific entity type

Field Summary
- Fields inherited from class org.qi4j.migration.assembly.AbstractMigrationRule
  fromVersion, toVersion

Constructors
Constructor and Description
`MigrationRule(String fromVersion, String toVersion, MigrationOperation operation)`

Methods
Modifier and Type	Method and Description
`void`	`downgrade(org.qi4j.spi.entitystore.helpers.StateStore stateStore, Migrator migrator)`
`String`	`toString()`
`void`	`upgrade(org.qi4j.spi.entitystore.helpers.StateStore stateStore, Migrator migrator)`

Methods inherited from class org.qi4j.migration.assembly.AbstractMigrationRule
fromVersion, toVersion

public MigrationRule(String fromVersion,
             String toVersion,
             MigrationOperation operation)

public void upgrade(org.qi4j.spi.entitystore.helpers.StateStore stateStore,
           Migrator migrator)
             throws IOException

public void downgrade(org.qi4j.spi.entitystore.helpers.StateStore stateStore,
             Migrator migrator)
               throws IOException

Class MigrationRule