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Table of Contents

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  1. Preface
  2. Introduction to Transformations
  3. Transformation Ports
  4. Transformation Caches
  5. Address Validator Transformation
  6. Aggregator Transformation
  7. Association Transformation
  8. Bad Record Exception Transformation
  9. Case Converter Transformation
  10. Classifier Transformation
  11. Comparison Transformation
  12. Consolidation Transformation
  13. Data Masking Transformation
  14. Data Processor Transformation
  15. Decision Transformation
  16. Duplicate Record Exception Transformation
  17. Expression Transformation
  18. Filter Transformation
  19. Hierarchical to Relational Transformation
  20. Java Transformation
  21. Java Transformation API Reference
  22. Java Expressions
  23. Joiner Transformation
  24. Key Generator Transformation
  25. Labeler Transformation
  26. Lookup Transformation
  27. Lookup Caches
  28. Dynamic Lookup Cache
  29. Macro Transformation
  30. Match Transformation
  31. Match Transformations in Field Analysis
  32. Match Transformations in Identity Analysis
  33. Normalizer Transformation
  34. Merge Transformation
  35. Parser Transformation
  36. Python Transformation
  37. Rank Transformation
  38. Read Transformation
  39. Relational to Hierarchical Transformation
  40. REST Web Service Consumer Transformation
  41. Router Transformation
  42. Sequence Generator Transformation
  43. Sorter Transformation
  44. SQL Transformation
  45. Standardizer Transformation
  46. Union Transformation
  47. Update Strategy Transformation
  48. Web Service Consumer Transformation
  49. Parsing Web Service SOAP Messages
  50. Generating Web Service SOAP Messages
  51. Weighted Average Transformation
  52. Window Transformation
  53. Write Transformation
  54. Appendix A: Transformation Delimiters

Developer Transformation Guide

Developer Transformation Guide

Back Next

Creating a Dynamic Expression

Creating a Dynamic Expression

Create a dynamic expression in an Expression transformation to run the expression one time for each port in a dynamic port or a port selector. The dynamic expression returns the results to a separate generated port for each instance.
  1. In the Expression transformation, go to the
    Properties
     view and click the
    Ports
     tab.
  2. Click
    New Dynamic Port
    .
    The Developer tool creates a dynamic port with default properties.
  3. Rename the dynamic port and disable the input option.
    The dynamic port must be an output port.
  4. In the
    Expression
     column for the dynamic output port, click the
    Open
     button ( "" ).
    The
    Dynamic Expression
     dialog box appears:
  5. In the Expression editor, enter an expression. The expression can include a port selector or a dynamic port.
    For example,
    LTRIM(RTRIM(Dynamic_Customer))
    , where Dynamic_Customer is a dynamic port.
  6. Click
    Validate
     to validate the expression.
  7. Click
    OK
     to exit the
    Validate Expression
     dialog box.
  8. In the
    Output Port Settings
     area, select the dynamic output port from the
    Base Port
     list or choose a port selector that you referenced in the expression.
    The Developer tool generates output ports based on what you select.
  9. Use the following steps to rename the output ports:
    1. Click
      Edit Output Port Settings
      .
      The
      Output Port Settings
       dialog box appears.
    2. In the
      Name
       list, select one of the options and enter a value for the prefix or suffix. If you selected
      Fixed string + Auto-number
      , enter the text for output port name. For example, if you enter TRIM for the output port name, the output port names appear as TRIM1, TRIM2, TRIM3.
    3. Optionally, choose
      Specify settings
       in the
      Other Settings
       area to change the type, precision, and scale for the output ports. By default, the output ports use the settings of the base ports.
    4. Click
      OK
      .
  10. Click
    OK
     to exit the
    Dynamic Expression
     editor.
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