Table of Contents


  1. Preface
  2. Introduction to Informatica Big Data Management
  3. Mappings
  4. Sources
  5. Targets
  6. Transformations
  7. Data Preview
  8. Cluster Workflows
  9. Profiles
  10. Monitoring
  11. Hierarchical Data Processing
  12. Hierarchical Data Processing Configuration
  13. Hierarchical Data Processing with Schema Changes
  14. Intelligent Structure Models
  15. Stateful Computing
  16. Appendix A: Connections
  17. Appendix B: Data Type Reference
  18. Appendix C: Function Reference

Dynamic Expressions

Dynamic Expressions

You can configure a dynamic expression to construct a dynamic complex port. Use STRUCT or ARRAY functions in dynamic expressions to construct a dynamic struct or a dynamic array. You can reference a port selector or a dynamic port in a dynamic expression for a dynamic complex output port.
A dynamic expression for an output port of a primitive data type runs the expression against each port to generate multiple output ports. A dynamic expression for a dynamic complex output port runs the expression to construct a dynamic complex port and returns a single output port of a complex data type.
You must specify a base port for the dynamic expression. Base port setting determines how the elements of the output complex port must look like. For example, elements of a port selector determine the elements of a dynamic output array. Base port for a struct determines the types of the elements of the output struct port.
When you configure a dynamic expression, the Developer tool does not validate whether you have specified a base port.


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