Axon 3.1: use of Collection instead of Iterable in AggregateMemberAnnotatedChildEntityCollectionDefinition

[corona-it]

In the protected method resolveEventTargets in the class AggregateMemberAnnotatedChildEntityCollectionDefinition.java the result of ReflectionUtils.getFieldValue(field, parentEntity) (line 89) should be assigned to an Iterable instead of a Collection

[smcvb]

Did you have some exceptions occur with it being a set to a Collection @corona-it?

[corona-it]

yes, I get a ClassCastException if I upgrade from 3.0.7 to 3.1. This is because we use vavr collections

[abuijze]

Hi @corona-it, thanks for reporting it. You beat me to it ;-)

@smcvb, the issue is that the AggregateMemberAnnotatedChildEntityCollectionDefinition kicks in when the declared field is an Iterable, but when accessing the field contents, at runtime, it casts to a Collection. Since @corona-it uses Vavr collections (which implement Iterable, but not Collection) in the project, it causes a ClassCastException.

[smcvb]

I understand the issue, I just wanted to hear the situation which caused the exception @corona-it was experiencing.

I think it's valuable to have that information in the bug ticket here.
Already had the fix pending locally, but then you beat me to that, @abuijze ;-)

Thanks for reporting this @corona-it!