Nullability

[NeQuissimus]

Is there a document or some logic I can read about which tells me about nullability of fields?
Do I have to assume that every field can potentially be null?

You are targeting Java 7, so Optional is not available. Is there a way the API could signal nullability?

[oschwald]

This API returns empty model classes even if there is no corresponding object in the database record. However, all of the individual reference-type fields within a particular model may not be present and their corresponding getters will return null if this is the case.

[NeQuissimus]

Right, so I will always receive an InsightsResponse, for example, but from then on out, every field could potentially be null?!

[oschwald]

Any of our internal model classes will not be null, e.g., on InsightsResponse, getTraits() will return a non-null com.maxmind.geoip2.record.Traits, but on Traits, getConnectionType() may return null instead of a String.

[NeQuissimus]

Thanks for the clarification.