Table of Contents

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

Data Transformation User Guide

Data Transformation User Guide

Rollback

Rollback

If a component fails, its effects are rolled back.
For example, suppose that a
Group
contains three non-optional
Content
anchors that store values in data holders. If the third
Content
anchor fails, the
Group
fails. The Script rolls back the effects of the first two
Content
anchors. The data that the first two
Content
anchors already stored in data holders is removed.
The rollback applies only to the main effects of a transformation, such as a Parser storing values in data holders or a serializer writing to its output. The rollback does not apply to side effects. In the above example, if the
Group
contains a
WriteValue
action that writes a line in a text output file, the line is not deleted.


Updated September 26, 2018