Table of Contents

Search

  1. Preface
  2. Introduction to Data Transformation
  3. Data Processor Transformation
  4. Wizard Input and Output Formats
  5. Relational Input and Output
  6. Using the IntelliScript Editor
  7. XMap
  8. Libraries
  9. Schema Object
  10. Command Line Interface
  11. Scripts
  12. Parsers
  13. Script Ports
  14. Document Processors
  15. Formats
  16. Data Holders
  17. Anchors
  18. Transformers
  19. Actions
  20. Serializers
  21. Mappers
  22. Locators, Keys, and Indexing
  23. Streamers
  24. Validators, Notifications, and Failure Handling
  25. Validation Rules
  26. Custom Script Components

Data Transformation User Guide

Data Transformation User Guide

Router Statements

Router Statements

A Router statement provides alternatives for the mapping logic based on conditions in the input document.
The Router statement contains one or more Option statements and can contain one Default statement. When the Data Processor transformation performs a Router statement, it tests each Option nested below the Router statement.
The first Option statement that matches is performed. The Option statement can contain one or more child statements of any type. If no Option statement matches, the Default statement is performed. If there is no Default statement, the Router statement fails.
You can configure multiple Option statements in the same Router group. The Data Processor transformation performs the first Option statement that it accepts. The Data Processor transformation does not perform any Option statement below it in the group. When the Data Processor transformation does not accept an Option statement, it tests the next Option statement.
When the transformation does not accept any Option statement and there is no Default statement, the Router statement fails. If the Option statement has a condition that is true but the mapping statements inside it fail and propagates the failure, the Router fails. You can configure the mapping to skip the Router if the Router fails.
If a Router contains no Option statement but does contain a Default statement, then the Default statement is always performed.

Router Statement Example

An XMap contains a repeating group under the context of Employee. The first child statement in the group is a Router statement. The Router statement has one Option statement. The Option statement contains a condition that checks if the value of Role is equal to the value of Manager. If the role equals manager, the Option statement evaluates to true. The mapping evaluates the Run XMap statement nested under the Option statement. The Data Processor transformation calls the EmployeeToWorker XMap to map elements to Manager.
If the role is not equal to manager, the Default statement is true. The mapping evaluates the next statement for the Default option. The default mapping statement calls EmployeeToWorker XMap to map the elements to Worker.
The following figure shows the Router statement with an Option statement and a Default statement:
The XMap editor grid shows that the Router nests both the Option statement and the Default statement. Both the Option statement and the Default statement nest other statements that define an action to take if the appropriate conditions are met.


Updated September 25, 2018