Rollover is the process of transitioning forward in time from one period to another. Executing a Rollover usually involves moving data from one period over to another and updating the Time Frame Reference Date. The process may also contain updating or refreshing data from source systems and performing calculations.
To enable Rollover for a Data Store or Setting, you first need to set up the Time Frame and add Time Frame Measure Columns to the repository schema.
Once the Time Frame is set up, you need to go to the Rollover section in the Feature tab to enable Rollover for the repository by checking «Is Rollover Enabled».
Specifies which columns to roll over new periods. You need to specify which columns to roll over, because you would normally not want all Time Frame Measure columns to roll over. As an example, you would probably not execute rollovers for columns containing Actuals, but rather refresh data for these columns from the Data Warehouse when transitioning to a new period.
Specifies that the rollover should be cyclic, meaning data from columns leaving the Time Frame window will loop back and reappear from the tail of the window. For example, if you are running a 12 months continuous forecast, enabling cyclic rollover will copy data from January of the current year to January next year, giving you a decent starting value for that period.
Update from Source
When setting up Rollover for Data Stores, specifies whether to update data from the data sources after a Rollover. Updating the Data Store is done after the Rollover has completed and the Time Frame has been updated, but prior to executing any post-update Rollover Calculations.
Don’t update data (default)
The standard rollover is executed. The Data Store does not update from the source.
Executes the rollover, then updates the Data Store according to the Data Update Configuration before executing any post-update Rollover Calculations.
Executes the rollover, the reloads data to the columns bound to the data source(s) in the schema configuration. Note that any rollover columns bound to the data sources will also be reloaded. Being a rollover column does not prevent reloading data for the column if this setting is applied.
Specifies column calculations to run before and after the Rollover. To set up a column calculation, add a column to the Rollover Calculations list and enter the SQL expression for calculating the value. The expression supports directives.
A calculation can run before and after the Rollover. If you want a calculation to run both before and after the Rollover, you need to add the column twice and enable one to run after the Rollover. Post-rollover calculations will run after a Data Store update.