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

defineJExpression

defineJExpression

Defines an expression, including the expression string and input parameters. Arguments for the defineJExpression method include an array of JExprParamMetadata objects that contains the input parameters and a string value that defines the expression syntax.
Use the following syntax:
defineJExpression(     String expression,     Object[] paramMetadataArray     );
The following table describes the parameters:
Parameter
Type
Datatype
Description
expression
Input
String
String that represents the expression.
paramMetadataArray
Input
Object[]
Array of JExprParaMetadata objects that contain the input parameters for the expression.
You can add the defineJExpression method to the Java code on any code entry tab except the
Imports
and
Functions
tabs.
To use the defineJExpression method, you must instantiate an array of JExprParamMetadata objects that represent the input parameters for the expression. You set the metadata values for the parameters and pass the array as a parameter to the defineJExpression method.
For example, the following Java code creates an expression to look up the value of two strings:
JExprParaMetadata params[] = new JExprParamMetadata[2]; params[0] = new JExprParamMetadata(EDataType.STRING, 20, 0); params[1] = new JExprParamMetadata(EDataType.STRING, 20, 0); defineJExpression(":lkp.mylookup(x1,x2)",params);
You must number the parameters that you pass to the expression consecutively and start the parameters with the letter x. For example, to pass three parameters to an expression, name the parameters x1, x2, and x3.

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