Table of Contents

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  1. Preface
  2. Working with Transformations
  3. Aggregator Transformation
  4. Custom Transformation
  5. Custom Transformation Functions
  6. Data Masking Transformation
  7. Data Masking Examples
  8. Expression Transformation
  9. External Procedure Transformation
  10. Filter Transformation
  11. HTTP Transformation
  12. Identity Resolution Transformation
  13. Java Transformation
  14. Java Transformation API Reference
  15. Java Expressions
  16. Java Transformation Example
  17. Joiner Transformation
  18. Lookup Transformation
  19. Lookup Caches
  20. Dynamic Lookup Cache
  21. Normalizer Transformation
  22. Rank Transformation
  23. Router Transformation
  24. Sequence Generator Transformation
  25. Sorter Transformation
  26. Source Qualifier Transformation
  27. SQL Transformation
  28. Using the SQL Transformation in a Mapping
  29. Stored Procedure Transformation
  30. Transaction Control Transformation
  31. Union Transformation
  32. Unstructured Data Transformation
  33. Update Strategy Transformation
  34. XML Transformations

Transformation Guide

Transformation Guide

Change Default Row Strategy Function

Change Default Row Strategy Function

By default, the row strategy for a Custom transformation is pass-through when the transformation scope is Row. When the transformation scope is Transaction or All Input, the row strategy is the same value as the Treat Source Rows As session property by default.
For example, in a mapping you have an Update Strategy transformation followed by a Custom transformation with Row transformation scope. The Update Strategy transformation flags the rows for update, insert, or delete. When the Integration Service passes a row to the Custom transformation, the Custom transformation retains the flag since its row strategy is pass-through.
However, you can change the row strategy of a Custom transformation with PowerCenter. Use the INFA_CTChangeDefaultRowStrategy() function to change the default row strategy at the transformation level. For example, when you change the default row strategy of a Custom transformation to insert, the Integration Service flags all the rows that pass through this transformation for insert.
The Integration Service returns INFA_FAILURE if the session is not in data-driven mode.
Use the following syntax:
INFA_STATUS INFA_CTChangeDefaultRowStrategy(INFA_CT_TRANSFORMATION_HANDLE transformation, INFA_CT_DefaultUpdateStrategy defaultUpdateStrategy);
The following table describes the arguments for this function:
Argument
Datatype
Input/
Output
Description
transformation
INFA_CT_TRANSFORMATION_HANDLE
Input
Transformation handle.
defaultUpdateStrategy
INFA_CT_DefaultUpdateStrategy
Input
Specifies the row strategy you want the Integration Service to use for the Custom transformation.
  • eDUS_PASSTHROUGH. Flags the row for passthrough.
  • eDUS_INSERT. Flags rows for insert.
  • eDUS_UPDATE. Flags rows for update.
  • eDUS_DELETE. Flags rows for delete.
The return value datatype is INFA_STATUS. Use INFA_SUCCESS and INFA_FAILURE for the return value.

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