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SelectAttributes activity
The selectAttributes
activity creates a new message using only the specified
attributes from the original message. Every other attribute is dropped.
selectAttributes
creates new attributes under the root of the message only. So
given this message:
{ "device": { "id": "device-123", "coord": [ 47.6152543, -122.3354883 ], "temp": 50, "hum": 40 }, "light": 90 }
and this activity:
{ "selectAttributes": { "name": "MySelectAttributesActivity", "attributes": [ "device.temp", "device.hum", "light" ], "next": "MyDatastoreActivity" } }
The result is the following message flowing through the pipeline.
{ "temp": 50, "hum": 40, "light": 90 }
Again, selectAttributes
can only create root-level objects.