Parameter usage
You can use parameters to represent additional properties such as connections, SQL statements, sort and group-by port lists, expression variables, and run time environment.
Parameter types
You can use the following parameter types for dynamic mappings: expression, input link set, port, port list, resource, and sort list.
Binding parameters between mappings, mapplets, and transformations
You can bind mapping parameters to mapplet parameters or to transformation parameters in the
Instance Value
column of a
Parameters
tab. You can also bind mapplet parameters to transformation parameters.
When you bind a parameter to another parameter, the parameter overrides the other parameter at run time. You can create a mapping or a mapplet parameter from an existing parameter and bind the parameters in one step. Click the
Expose as Mapping Parameter
option or the
Expose as Mapplet Parameter
option for the parameter you want to override.
You can bind parameters from a mapping to parameters in a Read or Write logical data object mapping.