Table of Contents

Search

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

Transformations

Transformations

Incoming fields

Incoming fields

An incoming field is a field that enters a transformation from an upstream transformation.
By default, a transformation inherits all incoming fields from an upstream transformation. However, you might want to change the default. For example, you might not need all of the fields from an upstream transformation, or you might need to rename fields from an upstream transformation.
A field rule defines how data enters a transformation from an upstream transformation. You can create field rules to specify which incoming fields to include or exclude and to rename incoming fields as required.
A field name conflict occurs when fields come from multiple transformations and have the same name. To resolve a field name conflict caused by fields from an upstream transformation, you can create a field name conflict resolution to rename incoming fields in bulk.
The following list shows the order of events that take place as fields enter and move through a transformation:
  1. Field name conflict resolution rules run, if any are present.
  2. Field rules run as fields from upstream transformations enter a transformation.
  3. Depending on the transformation type, new fields might be added to a transformation. For example, in a Lookup transformation, fields can enter the transformation from a lookup object.