Table of Contents

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  1. Preface
  2. Working with Transformations
  3. Aggregator Transformation
  4. Custom Transformation
  5. Custom Transformation Functions
  6. Data Masking Transformation
  7. Data Masking Examples
  8. Expression Transformation
  9. External Procedure Transformation
  10. Filter Transformation
  11. HTTP Transformation
  12. Identity Resolution Transformation
  13. Java Transformation
  14. Java Transformation API Reference
  15. Java Expressions
  16. Java Transformation Example
  17. Joiner Transformation
  18. Lookup Transformation
  19. Lookup Caches
  20. Dynamic Lookup Cache
  21. Normalizer Transformation
  22. Rank Transformation
  23. Router Transformation
  24. Sequence Generator Transformation
  25. Sorter Transformation
  26. Source Qualifier Transformation
  27. SQL Transformation
  28. Using the SQL Transformation in a Mapping
  29. Stored Procedure Transformation
  30. Transaction Control Transformation
  31. Union Transformation
  32. Unstructured Data Transformation
  33. Update Strategy Transformation
  34. XML Transformations

Transformation Guide

Transformation Guide

Modifying a Reusable Transformation

Modifying a Reusable Transformation

Changes to a reusable transformation that you enter through the Transformation Developer are immediately reflected in all instances of that transformation. While this feature is a powerful way to save work and enforce standards, you risk invalidating mappings when you modify a reusable transformation.
To see what mappings, mapplets, or shortcuts may be affected by changes you make to a transformation, select the transformation in the workspace or Navigator, right-click, and select View Dependencies.
If you make any of the following changes to the reusable transformation, mappings that use instances of it may be invalidated:
  • When you delete a port or multiple ports in a transformation, you disconnect the instance from part or all of the data flow through the mapping.
  • When you change a port datatype, you make it impossible to map data from that port to another port using an incompatible datatype.
  • When you change a port name, expressions that refer to the port are no longer valid.
  • When you enter an invalid expression in the reusable transformation, mappings that use the transformation are no longer valid. The Integration Service cannot run sessions based on invalid mappings.

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