After setting up a couple of VOs, I proceeded to run the adf model tester. upon which I received the following exception.
java.lang.ClassCastException: com.mysql.jdbc.JDBC4Connection cannot be cast to oracle.jdbc.OracleConnection
A search on the otn forums turned up:
Key to correcting this is to swich the jbo.SQLBuilder attribute in am config wizard to be SQL92 instead of Oracle. See screen cap.
Also, filtering, sorting on an af:table component seems to only work if the Vo is Eo based.