[SensorThings] Entity "MultiDatastream" is unavailable as an expand entity

[lucagiovannini]

What is the bug or the crash?

Entity "MultiDatastream" is unavailable as an expand entity.

Steps to reproduce the issue

Select Entity type = Things
Try to expand to MultiDatastreams

Versions

QGIS version
3.38.2-Grenoble
QGIS code revision
130c432
Qt version
5.15.13
Python version
3.12.5
GDAL/OGR version
3.9.2
PROJ version
9.4.0
EPSG Registry database version
v11.004 (2024-02-24)
GEOS version
3.12.2-CAPI-1.18.2
SQLite version
3.45.1
PDAL version
2.6.3
PostgreSQL client version
16.2
SpatiaLite version
5.1.0
QWT version
6.2.0
QScintilla2 version
2.14.1
OS version
Windows 10 Version 2009

Active Python plugins
profiletool
4.1.8
QuickOSM
1.16.0
quick_map_services
0.19.26
SensorThingsAPI
1.1.12
SensorThingsAPI_2
1.0.1
db_manager
0.1.20
grassprovider
2.12.99
MetaSearch
0.3.6
processing
2.12.99

Supported QGIS version

• I'm running a supported QGIS version according to the roadmap.

New profile

• I tried with a new QGIS profile

Additional context

No response

[nyalldawson]

Have you got an example of a server + configuration where this should be valid which I can test with?

[lucagiovannini]

Hi Nyall, yes I do!

You can use this server:
https://iot.comune.fe.it/FROST-Server/v1.1

Filtering on:
properties/organization eq 'traffico_cofe'

For example, the following expansion chain Location -> Thing -> Multidatastream:

https://iot.comune.fe.it/FROST-Server/v1.1/Locations?$filter=properties/organization%20eq%20%27traffico_cofe%27

https://iot.comune.fe.it/FROST-Server/v1.1/Locations('traffico_cofe_mortara')/Things

https://iot.comune.fe.it/FROST-Server/v1.1/Things('traffico_cofe_151')/MultiDatastreams