Field Order

Use the Field Order processor for the following reasons:

Order the fields in a map field

Fields in a map field have no defined order. Use the Field Order processor to specify the order of the fields and then output the fields to either the list-map or list root field which both retain field order.

For example, let’s say your pipeline reads JSON data and you want to write that data using the delimited data format. Data Collector uses a map root field for JSON data. However, for a destination to write records as delimited data, the root field type must be list or list-map. You use the Field Order processor to order the fields in the map root field and output the ordered fields to a list-map root field. Then you can write the records as delimited data.

Reorder the fields in a list-map field

Fields in a list-map field have a defined order. Use the Field Order processor when you need to reorder the fields, and then output the fields to the list-map root field.

When you configure the Field Order processor, you define the order of the fields. You specify whether to output the ordered fields to a list-map or list root field.

You configure how the processor handles missing or extra fields in the record. You can also list any fields that you want the processor to discard from the record.