Non-Primitive Values from a Registered Content Provider are not showing a value - arrays

Question

I'm using the /v2/registrations endpoint to register a content provider with the legacyForwarding flag being set. Therefore my Content Provider is offering the v1/queryContext endpoint
When I am returning a simple value (Integer, String etc.) such as a temperature the data is added to the context correctly:
{
"contextResponses": [
{
"contextElement": {
"attributes": [
{
"name": "temperature",
"type": "Number",
"value": 27
}
],
"id": "urn:ngsi-ld:Store:001",
"isPattern": "false",
"type": "Store"
},
"statusCode": {
"code": "200",
"reasonPhrase": "OK"
}
}
]
}
However when trying to return an array of strings as shown from a Context Provider.
{
"contextResponses": [
{
"contextElement": {
"attributes": [
{
"name": "tweets",
"type": "Array",
"value": [
"String 1",
"String 2"
]
}
],
"id": "urn:ngsi-ld:Store:002",
"isPattern": "false",
"type": "Store"
},
"statusCode": {
"code": "200",
"reasonPhrase": "OK"
}
}
]
}
I can see the request being sent in the log and I can retrieve the following entity:
{
"id": "urn:ngsi-ld:Store:002",
"type": "Store",
"address": {
"type": "PostalAddress",
"value": "",
"metadata": {}
},
"location": {
"type": "geo:json",
"value": "",
"metadata": {}
},
"name": {
"type": "Text",
"value": "Checkpoint Markt",
"metadata": {}
},
"tweets": {
"type": "Array",
"value": "",
"metadata": {}
}
}
As you can see the "tweets" value is blank, but the attribute exists and the type has been successfully received.
My question is how should I return an Array or an Object as a value from a Content Provider so that Orion is able to display the data received correctly?

Answer 1

Further investigation from the Orion Team shows that this was indeed a bug and an issue was raised against Orion 2.0.0. With the latest release, the bug has now been fixed.
The solution is to upgrade to a later version of Orion - currently 2.1.0 (at the time of writing)