The two API's are virtually the same. The only real differences are:

• Java Lists vs Scala Seqs
• Java Map vs Scala Map
• Logger enums
• parse outputs a JDOM Document vs Scala XML Node
• unparse inputs a JDOM Document vs Scala XML Node

Replacing Scala Seq/Map/enums with a Java List/Map/enum does not seem that big of a deal. And with new InfosetInputter and InfosetOutputters, the differences between parse and unparse are removed. Since we are already breaking API with the addition of InfosetInputter/Outputter, we should just remove the sapi/japi distinction and just have a daffodil-api class that will work for both Java and Scala, removing the duplicate code.