Error in REST API

Setup, Configuration and Use Beginners
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1

I am in the process of upgrading to openhab 3.0, and I enjoy a lot of improvements.

Today I found something which must be a bug in the REST API.

When searching for a group in openhab2 with:
http://openhab2:8080/rest/items/gTempZone_H_FF_Kitchen

i get the following result - as expected (Link to member points to the member):

{
“members”: [
{
“link”: “http://openhab2:8080/rest/items/Thermostat_Kitchen_Room”,
“state”: “22”,
“stateDescription”: {
“pattern”: “%.1f °C”,
“readOnly”: false,
“options”: []
},
“type”: “Number”,
“name”: “Thermostat_Kitchen_Room”,
“label”: “Set room temp”,
“category”: “heating”,
“tags”: [],
“groupNames”: [“gThermostats”, “gTempZone_H_FF_Kitchen”]
}
],
“link”: “http://openhab2:8080/rest/items/gTempZone_H_FF_Kitchen”,
“state”: “NULL”,
“editable”: false,
“type”: “Group”,
“name”: “gTempZone_H_FF_Kitchen”,
“label”: “Temp zone Kitchen”,
“category”: “colorwheel”,
“tags”: [],
“groupNames”: [“gTempZones”]
}

When doing a similar search in openhab3 with:
http://openhab3:8080/rest/items/gTempZone_H_FF_Kitchen

I get this result - which is not as expectet (Member link points to group - not to the member )
{
“members”: [
{
“link”: “http://openhab3:8080/rest/items/gTempZone_H_FF_Kitchen”,
“state”: “16.0 °C”,
“type”: “Number:Temperature”,
“name”: “KitchenThermostate”,
“label”: “Thermostat Kitchen”,
“category”: “”,
“tags”: [],
“groupNames”: [“gTempZone_H_FF_Kitchen”, “gThermostats”]
}
],
“link”: “http://openhab3:8080/rest/items/gTempZone_H_FF_Kitchen”,
“state”: “NULL”,
“editable”: false,
“type”: “Group”,
“name”: “gTempZone_H_FF_Kitchen”,
“label”: “Temp zone Kitchen”,
“category”: “colorwheel”,
“tags”: [],
“groupNames”: [“gTempZones”]
}

2
3

It might have more to do with how the Group was created than the API.
How is/was the Group defined? How is/was the members defined?

I suppose the next step is to examine the items JSONDB file directly, I’m not sure how much or little the API adds tothat for a query.

Note this member Item as well, not claiming to be a member. Are there nested Groups in this relationship?

4

Thanks for your reply. I’m not sure what you would like to se in the JSONDB, but here comes the definition of some items:

gTempZones is defined in a .items file
Group gTempZones “Temp zones”

gTempZone_H_FF_Kitchen is defined in a .items file
Group gTempZone_H_FF_Kitchen “Temp zone Kitchen” (gTempZones)

From JSONDB:

“KitchenThermostate”: {
“class”: “org.openhab.core.items.ManagedItemProvider$PersistedItem”,
“value”: {
“groupNames”: [
“gTempZone_H_FF_Kitchen”,
“gThermostats”
],
“itemType”: “Number:Temperature”,
“tags”: ,
“label”: “Thermostat Kitchen”,
“category”: “”
}
},

I would expect that the link present in the item, always would point to the item, independent on other circumstanses like group relations…

5

I’ve just realised your group has but one member, I misread it.

So would I, we were just looking for something screwy in the JSONDB.

I think you should log this as an issue against core on github.

6

I have never done that before - do you have a link I can use?
Thanks for your support!

7

I think it belongs here