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

Uncached or Static Cache

Uncached or Static Cache

Use the following guidelines when you configure a Lookup transformation that has a static lookup cache or an uncached lookup source:
  • Use the following operators when you create the lookup condition:
    =, >, <, >=, <=, !=
    If you include more than one lookup condition, place the conditions in the following order to optimize lookup performance:
    • Equal to (=)
    • Less than (<), greater than (>), less than or equal to (<=), greater than or equal to (>=)
    • Not equal to (!=)
      For example, create the following lookup condition:
      ITEM_ID = IN_ITEM_ID PRICE <= IN_PRICE
  • The input value must meet all conditions for the lookup to return a value.
The condition can match equivalent values or supply a threshold condition. For example, you might look for customers who do not live in California, or employees whose salary is greater than $30,000. Depending on the nature of the source and condition, the lookup might return multiple values.

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