How to control the format of associations in a JSON response

Associations in JSON responses are, by default, expressed as a JSONArray. You can control the format of 1-1 associations in JSON responses by setting the property:

com.corticon.server.execution.json.association.singleton=JSONObject

in the brms.properties on the machine where the JSON requests are processed. When this property is set, and when a Rule alters a 1-1 association through an = (equals) operator, the entity being assigned to the association will be expressed as a JSONObject, rather than an entity inside a JSONArray in the JSON response.

For example, here Order is represented as an array, even though there is only one order, a singleton. Note the square brackets:

{
	"Order":[
		{
			"OrderID":1,
			"OrderName":"XYZ"
		}
	]
}

Here the same Order is represented as a nested object:

{
	"Order":{
		"OrderID":1,
		"OrderName":"XYZ"
	}
}