Table of Contents

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  1. Preface
  2. Transformations
  3. Source transformation
  4. Target transformation
  5. Aggregator transformation
  6. Cleanse transformation
  7. Data Masking transformation
  8. Deduplicate transformation
  9. Expression transformation
  10. Filter transformation
  11. Hierarchy Builder transformation
  12. Hierarchy Parser transformation
  13. Hierarchy Processor transformation
  14. Input transformation
  15. Java transformation
  16. Java transformation API reference
  17. Joiner transformation
  18. Labeler transformation
  19. Lookup transformation
  20. Mapplet transformation
  21. Normalizer transformation
  22. Output transformation
  23. Parse transformation
  24. Python transformation
  25. Rank transformation
  26. Router transformation
  27. Rule Specification transformation
  28. Sequence Generator transformation
  29. Sorter transformation
  30. SQL transformation
  31. Structure Parser transformation
  32. Transaction Control transformation
  33. Union transformation
  34. Velocity transformation
  35. Verifier transformation
  36. Web Services transformation

Transformations

Transformations

Add selected array as struct

Add selected array as struct

When you add an incoming array of primitives to the output, you can choose to add the array as a struct. This option flattens the array into a struct field without flattening any descendant arrays. You can select this option when the output is hierarchical.
This option creates one record for each element in the selected array.

Example

You want to flatten an array of vehicle records into a struct without flattening the child array of maintenance records.
Add the vehicle array to the output group and choose
Add Selected Array as Struct
.
The following image shows the incoming and output fields:
The image shows the Hierarchy Processor tab of the Hierarchy Processor transformation. The Incoming Fields panel contains one input group with the following field: vehicle (array). The vehicle array contains the following fields: make (string), model (string) insurance (struct), and maintenance (array). The insurance struct contains the following fields: company (string) and policy_num (string). The maintenance array contains the following fields: date (string) and description (array of strings). The Output Fields panel contains the following field: vehicle (struct). The vehicle struct contains the following fields: make (string), model (string) insurance (struct), and maintenance (array). The insurance struct contains the following fields: company (string) and policy_num (string). The maintenance array contains the following fields: date (string) and description (array of strings).
The output contains one record for each element in the vehicle array.
For example, the incoming data contains the following record which contains data about two vehicles:
[ { "vehicle": [ { "make": "Toyota", "model": "Corolla", "insurance": { "company": "Allstate", "policy_num": "AS12876" }, "maintenance": [ { "date": "01/01/2020", "description": ["oil filter1", "oil filter2"] }, { "date": "01/08/2020", "description": ["tire rotation1", "tire rotation2"] } ] }, { "make": "Toyota", "model": "RAV4", "insurance": { "company": "Allstate", "policy_num": "AS2033" }, "maintenance": [ { "date": "01/02/2020", "description": ["air filter replacement1", "air filter replacement2"] }, { "date": "01/08/2020", "description": ["battery replacement1", "battery replacement2"] } ] } ] } ]
Data Integration
creates the following output records, one for each vehicle:
{ "vehicle":{ "make":"Toyota", "model":"Corolla", "insurance":{ "company":"Allstate", "policy_num":"AS12876" }, "maintenance":[ { "date":"01/08/2020", "description":["tire rotation2","tire rotation1"] }, { "date":"01/01/2020", "description":["oil filter2","oil filter1"] } ] } } { "vehicle":{ "make":"Toyota", "model":"RAV4", "insurance":{ "company":"Allstate", "policy_num":"AS2033" }, "maintenance":[ { "date":"01/08/2020", "description":["battery replacement2","battery replacement1"] }, { "date":"01/02/2020", "description":["air filter replacement2","air filter replacement1"] } ] } }