A mapping has a reusable Aggregator transformation that calculates the total salary by department. The Aggregator transformation receives employee data from an Expression transformation that has generated ports.
The Expression transformation might generate the following output ports from a dynamic expression:
Read_EMP Source 1:
EMPNO_OUT
NAME_OUT
SALARY_OUT
DEPTNO_OUT
Read_EMP Source 2:
EMPNUM_OUT
FULLNAME_OUT
SALARY_OUT
DEPT_OUT
The Aggregator transformation instance does not have a dynamic port.
Set the run-time link properties of the Aggregator transformation instance to receive the EMPNO_OUT or EMPNUM_OUT employee number, NAME_OUT or FULLNAME_OUT string, the SALARY number, and the DEPTNO_OUT or DEPT_OUT department number.
The following image shows the links between the Expression transformation and the Aggregator transformation: