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

Generated key fields

Generated key fields

When you configure a dynamic lookup cache, you can create a generated key for a field in the target object.
To create a generated key for a field in the target object, map the Sequence-ID field to a lookup cache field on the
Field Mapping
tab. You can map the Sequence-ID field instead of an incoming field to lookup cache fields with the integer or Bigint data type. For integer lookup fields, the generated key maximum value is 2,147,483,647. For Bigint lookup fields, the generated key maximum value is 9,223,372,036,854,775,807.
When you map the Sequence-ID field,
Data Integration
generates a key when it inserts a row into the lookup cache.
Data Integration
uses the following process to generate sequence IDs:
  1. When
    Data Integration
    creates the dynamic lookup cache, it tracks the range of values for each field that has a sequence ID in the dynamic lookup cache.
  2. When
    Data Integration
    inserts a row of data into the cache, it generates a key for a field by incrementing the greatest sequence ID value by one.
  3. When
    Data Integration
    reaches the maximum number for a generated sequence ID, it starts over at one.
    Data Integration
    increments each sequence ID by one until it reaches the smallest existing value minus one. If
    Data Integration
    runs out of unique sequence ID numbers, the mapping task fails.
Data Integration
generates a sequence ID for each row it inserts into the cache.