Transaction.rollback causes java.sql.SQLException

[joa]

Please see inline comments.
Code will result in "java.sql.SQLException: Can't call commit when autocommit=true"

def test(): Boolean =
  queryEvaluator.transaction {
    t => {
      t.execute("SELECT 1")
      t.execute("SELECT 1")

      val everythingWentSuccessful = false

      if(everythingWentSuccessful) {
        true
      } else {
        t.rollback()//causes the Transaction to be rolled back, autoCommit will be set to true
        false
      }
    } // no exception occurred so query evaluator will call commit on the transaction which yields exception
}

It seems to me the only way to roll back a transaction right now is to
a) raise an error
b) set auto commit to false after calling rollback.