It is not possible to annote custom subclasses of ArrayAdapter with @ebean since these need invoke a super constructor that contains a context as parameter.
Therefore it is not possible to create an empty constructor which is necessary to work with EBean.

Possible Solution:
Instead of insist on an empty constructor allow additionally a constructor taking a Context as parameter. If it is present call is with the context (The generated class has a Context in the constructor already, so it should be no problem to implement it.)