I’ve prepared an example for you to reproduce the issue and shared it with you via Dropbox (I’m not allowed to publicly share the data).
The shared zip contains everything you need to reproduce the issue:
- a dump of a small set with data
- all UDFs needed
- a working aggregate command for aql
- a Java test class for the same aggregation that leads to the above mentioned exception
Let me know if you need anything else.
TIA
BTW: renaming method name “execute” to something else did not help