Support enums

[julianpeeters]

Avro's SpecificData requires a Java enum. Is it even possible to annotate and expand top-level Java definitions?

[ppearcy]

+1... Trying to decide now if I want case classes/no enums or java classes w/ enums and it is a tough choice.

[julianpeeters]

You might like to check out avrohugger in the meantime.

[aakoshh]

Just so we can specify enums in the Avro schemas to avoid as many mistakes as possible I tried mapping enums to strings. It can't handle optional values (union with null would require proper values I think), but otherwise seems to work.

hellosoda@950536b