Created question in FIWARE Q/A platform on 20-04-2018 at 17:04
Please, ANSWER this question AT https://stackoverflow.com/questions/49945250/non-primitive-values-from-a-registered-content-provider-are-not-showing-a-value

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

Description:
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": [

],
"id": "urn:ngsi-ld:Store:001",
"isPattern": "false",
"type": "Store"
},
"statusCode":

}
]
}

However when trying to return an array of strings as shown from a Context Provider.

{
"contextResponses": [
{
"contextElement": {
"attributes": [

],
"id": "urn:ngsi-ld:Store:002",
"isPattern": "false",
"type": "Store"
},
"statusCode":

}
]
}

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?