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

External Procedures and External Procedure Transformations

External Procedures and External Procedure Transformations

There are two components to TX:
external procedures
and
External Procedure transformations
.
An
external procedure
exists separately from the Integration Service. It consists of C, C++, or Visual Basic code written by a user to define a transformation. This code is compiled and linked into a DLL or shared library, which is loaded by the Integration Service at runtime. An external procedure is “bound” to an External Procedure transformation.
An
External Procedure transformation
is created in the Designer. It is an object that resides in the Informatica repository and serves several purposes:
  1. It contains the metadata describing the following external procedure. It is through this metadata that the Integration Service knows the “signature” (number and types of parameters, type of return value, if any) of the external procedure.
  2. It allows an external procedure to be referenced in a mapping. By adding an instance of an External Procedure transformation to a mapping, you call the external procedure bound to that transformation.
    You can create a connected or unconnected External Procedure.
  3. When you develop Informatica external procedures, the External Procedure transformation provides the information required to generate Informatica external procedure stubs.

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