[Fiware-tech-help] Probelms with "q" option when making subscription Orion-LD

[Samu Rautiainen (TAU)]

Hi,

I tried to find solution for my problem all over the internet, but it seems it has not been yet answered anywhere I could find.

So my question is, that how can I make query for subscription, when the attribute that has to be queried is inside an array when using Orion-LD?

Here I have one attribute "involves" and working solution for subscription query, when the "Property" value is not an array:

[cid:image001.png at 01D7DADF.9D2133C0]
"q":"involves.object==urn:ngsi-ld:Device:asdasds:asdasd"

Since there is json inside of json, I can get to the object using involves.object.

Now in our case, this "involves" attribute will hold multiple relationship in an array, like this:

[cid:image002.png at 01D7DAE0.20F8BA60]

Is there a way, that I could make subscription query, where I check if "urn:ngsi-ld:Device:company:glove" is within this "involves" array?


BR
Samu Rautiainen
Research Assistant
SHOP4CF Component Developer
Tampere University
FAST-laboratory

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