"Running an xml process file with the API"

Hi there,
I have an xml process file. It runs fine with the rapidminer GUI. Is it possible to run it from a java application using the API?
I know one could be rewrite the process using the API
something like  inputOperator = OperatorService.createOperator("DatabaseExampleSource");
      // set parameters
      inputOperator.setParameter("database_system", "MySQL"); ...

but I just want to run my existing xml process file within an eclipse project.

Thanks. Help is appreciated.