Table of Contents

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  1. Preface
  2. Transformations
  3. Source transformation
  4. Target transformation
  5. Access Policy transformation
  6. Aggregator transformation
  7. B2B 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 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

Sample transaction control mappings with multiple targets

Sample transaction control mappings with multiple targets

In a mapping with multiple targets, a Transaction Control transformation can be effective for one target and ineffective for another target. If each target is connected to an effective Transaction Control transformation, the mapping is valid. If one target in the mapping is not connected to an effective Transaction Control transformation, the mapping is invalid.
The following image shows a valid mapping with both an ineffective and an effective Transaction Control transformation:
The mapping contains two pipelines. The first pipeline contains the following transformations: Source, TransactionControl_1, Expression_1, Target_1. The second pipeline contains the following transformations: Source, TransactionControl_1, Aggregator, Expression_2, TransactionControl_2, Target_2.
Data Integration
processes TransactionControl_1, evaluates the transaction control expression, and creates transaction boundaries. The mapping does not include a transformation that drops transaction boundaries between TransactionControl_1 and Target_1, making TransactionControl_1 effective for Target_1.
Data Integration
uses the transaction boundaries defined by TransactionControl_1 for Target_1.
However, the mapping includes a transformation that drops transaction boundaries between TransactionControl_1 and Target_2, which makes TransactionControl_1 ineffective for Target_2. When
Data Integration
processes the Aggregator transformation, with transformation scope set to All Input, it drops the transaction boundaries defined by TransactionControl_1 and outputs all rows in an open transaction. Then
Data Integration
evaluates TransactionControl_2, creates transaction boundaries, and uses them for Target_2.
If a roll back occurs in TransactionControl_1,
Data Integration
rolls back only rows from Target_1. It does not roll back any rows from Target_2.
The following image shows an invalid mapping with both an ineffective and an effective Transaction Control transformation:
The mapping contains two pipelines. The first pipeline contains the following transformations: Source, mapplet "mplt_TransactionControl," Aggregator_1, Target_1. The second pipeline contains the following transformations: Source, mapplet "mplt_TransactionControl," Aggregator_2, Expression, TransactionControl_2, Target_2.
The mapplet, mplt_TransactionControl, contains a Transaction Control transformation. It is ineffective for Target_1 and Target_2. The transformation scope for Aggregator_1 is All Input. It is an active source for Target_1. The transformation scope for Aggregator_2 is All Input. It is an active source for Target_2. TransactionControl_2 is effective for Target_2.
The mapping is invalid because Target_1 is not connected to an effective Transaction Control transformation.

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