Handling TDataSet results in Xcode from Delphi XE2 Datasnap Server

Question

I'm looking at the feasibility of using a Delphi XE2 DataSnap server pushing data from a SQL server through to an iPad application.

I've written the Datasnap server application, and am looking now at the iOS application. The TServerMethod returns the data as a TDataSet in iOS. What isn't clear is how does one go about extracting the resulting TDataSet in Xcode as a NSMutableArray? Below is the generated code in the DSProxy.m: -

-(id) getTServerMethods1_GetMileageList {
return  [NSArray arrayWithObjects:
  [DSRESTParameterMetaData parameterWithName: @"Value" withDirection:Input withDBXType:WideStringType withTypeName:@"string"],
  [DSRESTParameterMetaData parameterWithName: @"" withDirection:ReturnValue withDBXType:TableType withTypeName:@"TDataSet"],
nil];

}

Answer 1

I strongly suggest you to head to this article entitled DataSnap connectivity for iOS using Delphi XE2 and FireMonkey posted on EDN by Anders Ohlsson.

Answer 2

It looks like straight JSON that gets sent down to the client - so you should be able to use existing api's to turn it into NSStrings, NSNumbers, etc. Slightly similar to here: NSJSONSerialization gives me error "Duplicate key"