Table of Contents

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  1. Preface
  2. Introduction to Transformations
  3. Transformation Ports
  4. Transformation Caches
  5. Address Validator Transformation
  6. Aggregator Transformation
  7. Association Transformation
  8. Bad Record Exception Transformation
  9. Case Converter Transformation
  10. Classifier Transformation
  11. Comparison Transformation
  12. Consolidation Transformation
  13. Data Masking Transformation
  14. Data Processor Transformation
  15. Decision Transformation
  16. Duplicate Record Exception Transformation
  17. Expression Transformation
  18. Filter Transformation
  19. Hierarchical to Relational Transformation
  20. Java Transformation
  21. Java Transformation API Reference
  22. Java Expressions
  23. Joiner Transformation
  24. Key Generator Transformation
  25. Labeler Transformation
  26. Lookup Transformation
  27. Lookup Caches
  28. Dynamic Lookup Cache
  29. Macro Transformation
  30. Match Transformation
  31. Match Transformations in Field Analysis
  32. Match Transformations in Identity Analysis
  33. Normalizer Transformation
  34. Merge Transformation
  35. Parser Transformation
  36. Python Transformation
  37. Rank Transformation
  38. Read Transformation
  39. Relational to Hierarchical Transformation
  40. REST Web Service Consumer Transformation
  41. Router Transformation
  42. Sequence Generator Transformation
  43. Sorter Transformation
  44. SQL Transformation
  45. Standardizer Transformation
  46. Union Transformation
  47. Update Strategy Transformation
  48. Web Service Consumer Transformation
  49. Parsing Web Service SOAP Messages
  50. Generating Web Service SOAP Messages
  51. Weighted Average Transformation
  52. Window Transformation
  53. Write Transformation
  54. Appendix A: Transformation Delimiters

Developer Transformation Guide

Developer Transformation Guide

Rules and Guidelines for Linking Ports

Rules and Guidelines for Linking Ports

Certain rules and guidelines apply when you link ports.
Consider the following rules and guidelines when you connect mapping objects:
  • If the Developer tool detects an error when you try to link ports between two mapping objects, it displays a symbol indicating that you cannot link the ports.
  • Follow the logic of data flow in the mapping. You can link the following types of port:
    • The receiving port must be an input or input/output port.
    • The originating port must be an output or input/output port.
    • You cannot link input ports to input ports or output ports to output ports.
  • You must link at least one port of an input group to an upstream transformation.
  • You must link at least one port of an output group to a downstream transformation.
  • You can link ports from one active transformation or one output group of an active transformation to an input group of another transformation.
  • You cannot connect an active transformation and a passive transformation to the same downstream transformation or transformation input group.
  • You cannot connect more than one active transformation to the same downstream transformation or transformation input group.
  • You can connect any number of passive transformations to the same downstream transformation, transformation input group, or target.
  • You can link ports from two output groups in the same transformation to one Joiner transformation configured for sorted data if the data from both output groups is sorted.
  • You can only link ports with compatible datatypes. The Developer tool verifies that it can map between the two datatypes before linking them. The Data Integration Service cannot transform data between ports with incompatible datatypes.
  • The Developer tool marks some mappings as not valid if the mapping violates data flow validation.

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