Creating custom WSDL so that external system can invoke our webservice class

Question

We are trying to integrate SFDC with External system, were external system will invoke our webservice class(consumers od of WSDL) and salesforce will accept the request(Providers of WSDL).

Here external system will send us something called as tickets which is in the below format, and SFDC has to capture that request and parse it, to create case in the SFDC and send back the response to external system.

If anyone has worked on similar kind of requirement please let us know how to proceed.

<Account>
    <AccountId></AccountId>
    <Case>
           <CaseNumber></CaseNumber>
           <Owner></Owner>
           <FalloutJob>
                   <JobId></JobId>
                   <!--One or more repetitions:-->
                   <Attribute>
                          <Name></Name>
                          <Value></Value>
                          <ValueType></ValueType>
                   </Attribute>
           </FalloutJob>
    </Case>
</Account>

Answer 1

If you have defined your Apex class as global and your method as a webservice, then in Salesforce, you should be able to generate the WSDL.

global with sharing class WSClass {
    webservice static boolean wsMethod() {        
        return true;
    }
}

Find the class and click on the WSDL link to the left in the list of Apex classes. https://login.salesforce.com/01p

Answer 2

Steps you are supposed to follow

1. Import Partner WSDL
2. Import WSDL for the class
3. Generate stub classes for both the WSDL files. Include them in your source code package.
4. Invoke Login service from the partner port stub class. You've to pass Username and password if you've listed your client IP in Salesforce, else you need to pass Username and "password+Security token" in password field.
5. From the Response received get the Session ID.
6. Invoke your Case class web service port from the stub, supply values you need to pass to create case along with the Session Id.
7. Get the response . eg: Case Id/Case Number.
8. Log out using Logout service in the partner port stub class, supplying the session ID.