To use the results of a vertical macro in a mapping, configure a field rule to include the output fields in the downstream transformation or parameterize the target field mapping.
Because an expression macro represents fields that are not explicitly defined until run time, you need to configure the downstream transformation to include the output fields of a vertical macro. There are two ways to do this:
Create named fields in the downstream transformation. On the
Incoming Fields
tab, create a named field rule and create a new incoming field for each output field of the vertical macro. You can use these fields in downstream transformations.
Alternatively, if your Target transformation is directly downstream from the macro, completely parameterize the target field mapping. When you configure the mapping task,
Data Integration
creates the macro output fields in the target. Map the incoming fields to the target fields.
Example
A macro input field named %InputDates% represents the following source fields for a macro that converts the data to the Date data type:
OrderDate
ShipDate
PaymentReceived
The macro output field uses the default naming convention: <macro input field>_out. To use the Date fields that the macro generates, create a Named Field rule in the downstream transformation. Create the following fields:
OrderDate_out
ShipDate_out
PaymentReceived_out
Configure the field rule to include the fields that you create.
After you create the field rule, you can use the fields in expressions and field mappings in downstream transformations.