Table of Contents

Search

  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

Port Order

Port Order

The Integration Service evaluates the input ports first. The Integration Service evaluates the variable ports next, and the output ports last.
The Integration Service evaluates ports in the following order:
  1. Input ports.
    The Integration Service evaluates all input ports first since they do not depend on any other ports. Therefore, you can create input ports in any order. The Integration Service does not order input ports because input ports do not reference other ports.
  2. Variable ports.
    Variable ports can reference input ports and variable ports, but not output ports. Because variable ports can reference input ports, the Integration Service evaluates variable ports after input ports. Variables can reference other variables, so the display order for variable ports is the same as the order in which the Integration Service evaluates each variable.
    For example, if you calculate the original value of a building and then adjust for depreciation, you might create the original value calculation as a variable port. This variable port needs to appear before the port that adjusts for depreciation.
  3. Output ports.
    The Integration Service evaluates output ports last, because output ports can reference input ports and variable ports. The display order for output ports does not matter beause output ports cannot reference other output ports. Be sure output ports display at the bottom of the list of ports.

0 COMMENTS

We’d like to hear from you!