Dynamic Credentials with Webservice

Question

I'm developing a web service and need to establish a database connection based on a heavyweight user in the database. (Please...no discussion on that design...it is what it is at least for now.)
So far I've created a class defining the service method. (This will be converted to a webservice later using the wizard.) I've created a separate project containing an AppModule through which I'll access the datasource.
Use of dynamic credentials for web apps is discussed here: http://www.oracle.com/technology/products/jdev/howtos/bc4j/howto_dynamic_jdbc.html. However the example depends on the lifecycle's calling a subclass of SessionCookieFactory and passing of the UID/password via HttpSession object attributes. I'm assuming that a webservice would not have a call to the SessionCookieFactory in its lifecycle.
Is there a way in a webservice design to dynamically set the username and password for the connection? I'm using an AppModuleImpl subclass in my project, but I haven't seen any methods for changing the username/password before or after my call to Configuration.createRootApplicationModule(String a, String b). {My connection string is defined in a database connection in the Connections Navigator.}
I'm developing in JDev 10.1.3.1.

Answer 1

OK...I was able to make this work by modifying the dynamic JDBC example:
public Element serviceMethod(String username, String password, String parameter) {
String amDef="mypkg.AppModule";
String config="AppModuleLocal";
ServiceEnvInfoProvider envInfo = new ServiceEnvInfoProvider(username, password);
AppModuleImpl module = (AppModuleImpl)Configuration.createRootApplicationModule(amDef, config, envInfo);
Element resultElement = processingMethod(parameter);
return resultElement;
}