Re: Complex data for webservices

FROM : Niklas Saers
DATE : Mon Apr 21 13:45:25 2008

Just a short update with new questions:

On Apr 20, 2008, at 2:07 PM, Niklas Saers wrote:
> So I know I have to create some kind of CFTypeRef, but how do I make 
> a CFTypeRef object to match the Authentication class definition 
> above? And how do I make a CFTypeRef to match an array of 
> Authentication objects?


As far as I've understood, the CFTypeRef is an NSDictionary, and the 
NSDictionary will represent any complex type. For the Authentication 
object, I provide a dictionary with a datatype (I believe it's 
supposed to be "xsd:Authentication") and the two named parameters. I 
have not found a way to declare what datatype they are, so this is 
what I do:

NSMutableDictionary *param = [[NSMutableDictionary alloc] init];
[dict setObject:self.username forKey:@"username"];
[dict setObject:self.password forKey:@"password"];
[dict setObject:@"xsd:Authentication" forKey:(NSString*) kWSRecordType];

From myService.asmx I have defined TestAuthentication that is a SOAP-
based webservice living on an MS-IIS server, specified:
   (bool) TestAuthentication(Authentication auth);

So I've #import'ed testStub.h and do the following to invoke the call:

TestAuthentication *WS = [[TestAuthentication alloc] init];
[WS setCallBack:(id)self 
selector:@selector(testAuthenticationCompleted:)];
[WS setParameters:param];
[WS scheduleOnRunLoop:(NSRunLoop*)CFRunLoopGetCurrent() mode:(NSString 
*)kCFRunLoopDefaultMode];

Finally I've created a function for the selector:
- (id) testAuthenticationCompleted:(WSGeneratedObj*)invocation;

The function runs to its end, but shortly after my program crashes 
with a "Bus error". I believe that perhaps I should define the 
selector function differently, but I don't know what it should look 
like. So instead of doing it asyncronous I try calling it 
syncronously, and just to be sure I add a bit of logging:

TestAuthentication *WS = [[TestAuthentication alloc] init];
[WS setParameters:param];
NSLog(@"isComplete == %d, isFault == %d, true == %d", [WS isComplete], 
[WS isFault], YES);

What's strange here is that isFault is true: isComplete == 1, isFault 
== 1, true == 1
So I guess my NSDictionary is invalid since all I've done is pass it 
the parameters.

Another thing that I find strange is that the webservice is called 
upon [[TestAuthentication alloc] init], even though in my mind it 
should not have been executed until I call something like
[[WS getRef] executeCommand]

I hope that my explanation is good enough that you understand what my 
problems are and can help me out. As you know, documentation isn't 
great on this topic, and I've been unable to find sample code that 
does this for complex data types.

Sincerely yours

   Nik