Table of Contents

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  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

Configure expressions

Configure expressions

You can configure expressions when the output format is relational or hierarchical. For flattened output, can't configure the default expression once you add the field.
To configure an expression in the Hierarchy Processor transformation, follow these steps:
  1. Perform one of the following actions to create the output fields:
    1. To use an incoming field as an output, click the
      Add
      link that appears when you hover over the incoming field.
    2. To create a new field, click
      New Field
      in the Output Fields panel near the output group name or near an array name.
  2. Click the expression in the Output Fields section.
    For newly created fields, the link appears as
    Configure
    . The
    Field Expression
    dialog box appears.
  3. Enter the expression in the expression editor. You can add incoming fields, functions, and variables to the expression by clicking the
    Add
    link next to the object that you want to use. You can also type in the expression manually.
    The expression can contain constants, variables, built-in functions, and user-defined functions. You can nest functions to create a complex expression.
    If you modify the references to any of the fields, your expression will fail.
  4. Click
    Validate
    .
  5. Correct any errors.
  6. Click
    OK
    .
    You can close the editor and troubleshoot an invalid expression at another time.

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