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

Configuring an Expression for Dynamic Cache Updates

Configuring an Expression for Dynamic Cache Updates

You must enable the Lookup transformation to perform dynamic lookups before you can create a conditional expression.
Use the following steps to configure an expression for dynamic cache lookup:
  1. Create a dynamic Lookup transformation in the Transformation Developer.
  2. Open the Properties tab.
  3. Enable Lookup Caching and Dynamic Lookup Cache properties.
  4. To create an expression, click the Associated Expression list for the lookup port you want to update.
  5. Select Associated Expression.
    The Expression Editor appears.
  6. Define an expression by selecting input ports, lookup ports, and functions. The expression return value must match the lookup port type.
  7. Click Validate to verify that the expression is valid.
    If you do not validate an expression, the Designer validates it when you close the Expression Editor. If the expression is not valid, the Designer displays a warning.

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