It is currently not possible to access the database|web connections (username, password, host,etc.) with FMEObjects.
Usage scenario:
In the Python Startup Script (Scripted Parameters, PythonCaller, PythonCreator, Shutdown Script) we want to access an Oracle database via cx_oracle. While the Oracle Reader/Writer can use a Named Connection we have to expose additional parameters for our python scripts to be able to connect to the database.
Please expose functions in (Python) FMEObjects to be able to use existing Database|Web Connection details.