Table of Contents

Search

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

Transformations

Transformations

On Input Row

On Input Row

The Java transformation executes the Java code in the On Input Row section when the transformation receives an input row. In this example, the transformation might or might not generate an output row, based on the values of the input row.
Enter the following code in the On Input Row section:
// Initially set generateRow to true for each input row. generateRow = true; // Initially set isRoot to false for each input row. isRoot = false; // Check if input employee id and name is null. if (isNull ("EMP_ID") || isNull ("EMP_NAME")) { incrementErrorCount(1); // If input employee id and/or name is null, don't generate a output row for this // input row. generateRow = false; } else { // Set the output field values. EMP_ID_OUT = EMP_ID; EMP_NAME_OUT = EMP_NAME; } if (isNull ("EMP_DESC")) { setNull("EMP_DESC_OUT"); } else { EMP_DESC_OUT = EMP_DESC; } boolean isParentEmpIdNull = isNull("EMP_PARENT_EMPID"); if(isParentEmpIdNull) { // This employee is the root for the hierarchy. isRoot = true; logInfo("This is the root for this hierarchy."); setNull("EMP_PARENT_EMPNAME"); } synchronized(lock) { // If the employee is not the root for this hierarchy, get the corresponding // parent ID. if(!isParentEmpIdNull) EMP_PARENT_EMPNAME = (String) (empMap.get(new Integer (EMP_PARENT_EMPID))); // Add employee to the map for future reference. empMap.put (new Integer(EMP_ID), EMP_NAME); } // Generate row if generateRow is true. if(generateRow) generateRow();