Table of Contents

Search

  1. Preface
  2. Transformations
  3. Source transformation
  4. Target transformation
  5. Access Policy transformation
  6. Aggregator transformation
  7. Cleanse transformation
  8. Data Masking transformation
  9. Data Services transformation
  10. Deduplicate transformation
  11. Expression transformation
  12. Filter transformation
  13. Hierarchy Builder transformation
  14. Hierarchy Parser transformation
  15. Hierarchy Processor transformation
  16. Input transformation
  17. Java transformation
  18. Java transformation API reference
  19. Joiner transformation
  20. Labeler transformation
  21. Lookup transformation
  22. Machine Learning transformation
  23. Mapplet transformation
  24. Normalizer transformation
  25. Output transformation
  26. Parse transformation
  27. Python transformation
  28. Rank transformation
  29. Router transformation
  30. Rule Specification transformation
  31. Sequence Generator transformation
  32. Sorter transformation
  33. SQL transformation
  34. Structure Parser transformation
  35. Transaction Control transformation
  36. Union transformation
  37. Velocity transformation
  38. Verifier transformation
  39. Web Services transformation

Transformations

Transformations

Vertical macro example

Vertical macro example

To find the annual sum of quarterly data for each store, you might use a vertical expression macro in an Aggregator transformation.
The Aggregator transformation uses the store ID field as the group by field. A %QuarterlyData% macro input field reads sales data from the following input fields: Q1, Q2, Q3, and Q4.
A %QuarterlyData%_out macro output field is based on the %QuarterlyData% macro input field. To find the sum of sales for each quarter, the macro output field includes the following expression:
SUM(%QuarterlyData%)
.
In the Target transformation, a field rule includes the following output fields in the incoming fields list: Q1_out, Q2_out, Q3_out, Q4_out. In the target field mapping, the Qx_out fields are mapped to the target.
The following image shows the vertical expression macro in an Aggregator transformation:
The image shows a mapping with a Source to Aggregator to Target. The Properties panel displays the Aggregate tab of the Aggregator transformation with a %QuarterlyData% macro input field that defines the input fields. It also shows the %QuarterlyData%_out macro output field with the following expression: SUM(%QuarterlyData%).
When the task runs, the expression expands vertically, as follows:
SUM(Q1) SUM(Q2) SUM(Q3) SUM(Q4)
The task groups the data by store when it performs the aggregation and writes the results to the target.

0 COMMENTS

We’d like to hear from you!