Table of Contents

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  1. Preface
  2. Transformations
  3. Source transformation
  4. Target transformation
  5. Access Policy transformation
  6. B2B transformation
  7. Aggregator transformation
  8. Cleanse transformation
  9. Data Masking transformation
  10. Data Services transformation
  11. Deduplicate transformation
  12. Expression transformation
  13. Filter transformation
  14. Hierarchy Builder transformation
  15. Hierarchy Parser transformation
  16. Hierarchy Processor transformation
  17. Input transformation
  18. Java transformation
  19. Java transformation API reference
  20. Joiner transformation
  21. Labeler transformation
  22. Lookup transformation
  23. Machine Learning transformation
  24. Mapplet transformation
  25. Normalizer transformation
  26. Output transformation
  27. Parse transformation
  28. Python transformation
  29. Rank transformation
  30. Router transformation
  31. Rule Specification transformation
  32. Sequence Generator transformation
  33. Sorter transformation
  34. SQL transformation
  35. Structure Parser transformation
  36. Transaction Control transformation
  37. Union transformation
  38. Velocity transformation
  39. Verifier transformation
  40. Web Services transformation

Transformations

Transformations

Defining end of data behavior

Defining end of data behavior

You can define the behavior of an active or passive Java transformation when it has processed all input data. Define end of data behavior in the At End of Data section of the Java editor.
To generate output rows in the At End of Data section, set the transformation scope for the transformation to Transaction or to All Input on the
Advanced
tab. You cannot access or set the value of input field variables in this section.
Access and use the following variables and methods in the At End of Data section:
Output field variables
Use the names of output fields as variables to access or set output data for active Java transformations.
User-defined methods
Use any user-defined method that you declared in the Helper Code section.
Java transformation API methods
Call API methods provided by the Java transformation. For example, use the following Java code to write information to the session log when the end of data is reached:
logInfo("Number of null rows for partition is: " + partCountNullRows);
If you use the Java transformation in advanced mode, consider the following guidelines:
  • You cannot write output to standard output, but you can write output to standard error which appears in the log files.
  • You cannot pass binary null characters to an output field.
    To avoid a mapping failure, you can add code to the Java transformation that replaces the binary null characters with an alternative character before writing the data to the output field.

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