Table of Contents


  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

Using the Define Expression Dialog Box to Define an Expression

Using the
Define Expression
Dialog Box to Define an Expression

When you define a Java expression, you configure the function, create the expression, and generate the code that invokes the expression.
You can define the function and create the expression in the
Define Expression
dialog box.
To create an expression function and use the expression in a Java transformation, complete the following
  1. Configure the function that invokes the expression, including the function name, description, and parameters. You use the function parameters when you create the expression.
  2. Create the expression syntax and validate the expression.
  3. Generate the Java code that invokes the expression.
    The Designer places the code on the
    Java Expressions
    code entry tab in the Transformation Developer.
After you generate the Java code, call the generated function on the appropriate code entry tab to invoke an expression or get a JExpression object, based on whether you use the simple or advanced interface.
To validate an expression when you create the expression, you must use the
Define Expression
dialog box.


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