Input tab

Mapping Input Tab

Although one input entry point is available, you can create additional input entry points. Each input corresponds to one Mapping input specification step in the mapping sub-transformation. You can have any number of these entry points in a single mapping step, including no input entry point. The following table describes the options in the Input tab.

Option	Description
Available inputs (Add input)	Use the Plus Sign button to add an input mapping for the specified sub-transformation. You can remove an input by clicking the X icon.
Main data path	Select to indicate that you only have one input mapping and you can leave the two following fields (Input source step nameand Mapping target step name) empty.
Input source step name	Specify the name of the step in the parent transformation (not the mapping) to read from. It can be any step in the parent transformation with an outgoing hop connected to the Mapping step. Click Choose to select the target step from a list.
Mapping target step name	Specify the name of the Mapping Input specification step inside the sub-transformation that is to receive the rows from the input source step. Click Choose to select the target step from a list.
Description	Add a description to this input step mapping.
Update mapped fields downstream	Select this option to rename fields back to their original names when they reach the Mapping output step. This will make your sub-transformations more transparent and reusable. If not selected, fields get renamed before they are transferred to the mapping transformation.
Mapping	Click to open the Enter Mappingdialog box. Use this field mappings dialog to specify exactly how the fields from the input source step are connected to the fields of the Mapping target step. When you finish mapping fields, click OK in the Enter Mapping dialog box. Your field mapping will appear in the mapping table located beneath the Descriptionfield.