UML class diagram web service

Question

How do I draw a class in UML that uses a web service?

Answer 1

You could also use WSDL (Web Services Description Language) UML profile with the appropriate WSDL stereotypes.

That would give for example:

--------------------
| <<wsdl:service>> |
--------------------
|   MyWebService   |
--------------------
|                  |
--------------------
|                  |
--------------------
{URI="/MyWebService"}

---

A full UML example involving many components of a web service would be:

_{(source: xml.com)}

Answer 2

Sounds like a sequence diagram, with client and service instances, where the client makes the call to the service. If the request is synchronous, you'll see the return come back to the client; if not, there's no return.

Answer 3

I would have draw the web service as an interface.

I would put a boundary around the web service to indicate it's located outside my system boundary.