Common methods/implementation across multiple WCF Services
- by Rob
I'm looking at implementing some WCF Services as part of an API for 3rd parties to access data within a product I work on. There are currently a set of services exposed as "classic" .net Web Services and I need to emulate the behaviour of these, at least in part.
The existing services all have an AcquireAuthenticationToken method that takes a set of parameters (username, password, etc) and return a session token (represented as a GUID), which is then passed in on calls to any other method (There's also a ReleaseAuthenticationToken method, no guesses needed as to what that does!).
What I want to do is implement multiple WCF services, such as:
ProductData
UserData
and have both of these services share a common implementation of Acquire/Release. From the base project that is created by VS2k8, it would appear I will start with, per service:
public class ServiceName : IServiceName
{
}
public interface IServiceName
{
}
Therefore my questions would be:
Will WCF tolerate me adding a base
class to this, public class
ServiceName : ServiceBase,
IServiceName, or does the fact that
there's an interface involved mean
that won't work?
If "No it won't
work" to Question 1, could I change
IServiceName so it extends another
interface, IServiceBase, thus
forcing the presence of
Acquire/Release methods, but then
having to supply the implementation
in each service.
Are 1 and 2 both
really bad ideas and there's
actually a much better solution
that, knowing next to nothing about
WCF, I just haven't thought of?
