Table of Contents

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  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

Field mapping

Field mapping

Configure the field mapping in a Hierarchy Builder transformation to define which relational elements link to schema elements to provide the hierarchical output. Configure the field mapping on the
Field Mapping
tab of the
Properties
panel. If you have more than one group, use the field mapping editor to define primary and foreign keys. You also use the field mapping editor to link relational fields to schema elements.
The following image shows the field mapping editor.
To the left, the field mapping editor shows the relational fields. To the right, the editor shows the schema elements. In this example, the transformation has two relational groups so you must designate primary and foreign keys. In this example, the
NSId
field is a primary key in the
NewSource
group, and the
NSLeadId
field is the foreign key that links to the
NewSource1
group. The
NS1Id
field is a primary key in the
NewSource1
group.
A primary key is signified by the primary key icon in the
Key
column. A foreign key is signified by the foreign key icon.
To link a relational field to schema element, drag the relational element to the schema element. The
Mapped Field
column shows the relational field to which the schema element is mapped.
If the input relational fields constitute just one group, the data will be treated as denormalized input and there is no need to define primary or foreign keys.