package liquibase.change.custom;

 import liquibase.database.Database;

 import liquibase.exception.CustomChangeException;

 import liquibase.exception.RollbackImpossibleException;

 import liquibase.exception.UnsupportedChangeException;

 public interface CustomTaskRollback {

     /**

      * Method called to rollback the change.

      * 

      * @param database

      *            Database the change is being executed against.

      * @throws liquibase.exception.CustomChangeException

      *             an exception occurs while processing this rollback

      * @throws liquibase.exception.UnsupportedChangeException

      *             if this change is not supported by the {@link liquibase.database.Database} passed as argument

      * @throws liquibase.exception.RollbackImpossibleException

      *             if rollback is not supported for this change

      */

     public void rollback(Database database) throws CustomChangeException, UnsupportedChangeException,

             RollbackImpossibleException;

 }