Factory with generic protocol swift - swift

Question

I am creating a generic parser in my Network Layer with the help of associatedType and a Factory. Basic purpose is that I will call only one static function to whom I will pass type and data. It will do all the parsing stuff and will return me a Parsed Model Object.
protocol Parsable: Codable {
associatedtype JSON
static func Parse(object: Data) -> JSON?
}
Creation of Factory
struct ParseFactory<object: Parsable> {
let type: RequestType
func doParsing(data: Data) -> object.JSON? {
switch type {
case .RequestOne:
return ModelOne.Parse(object: data) as? object.JSON
case .RequestTwo:
return ModelTwo.Parse(object: data) as? object.JSON
}
}
}
Model Objects that create their own parsing stuff
class ModelOne: Parsable {
typealias JSON = ModelOne
let name: String
static func Parse(object: Data) -> JSON? {
let photoObject = try? JSONDecoder().decode(ModelOne.self, from: object)
return photoObject
}
}
class ModelTwo: Parsable {
typealias JSON = ModelTwo
let name: String
static func Parse(object: Data) -> JSON? {
let photoObject = try? JSONDecoder().decode(ModelTwo.self, from: object)
return photoObject
}
}
Call from Network Layer with single Line
let session = URLSession.shared
let task = session.dataTask(with: request) { (data, response, error) -> Void in
// parsing
if let dataNotNil = data {
// _ = Parsable
}
}
Question: How can I call the one line factory function that will call the respective function of Model.
Note: Any Help would be much appreciated

Answer 1

Here how you can use
let session = URLSession.shared
let request = URLRequest(url: URL(string:"yoururl")!)
let task = session.dataTask(with: request) { (data, response, error) -> Void in
if let dataNotNil = data {
let objectParse = ParseFactory<ModelOne>(type: RequestType.RequestOne)
let modelOneObjc = objectParse.doParsing(data: dataNotNil)
print(modelOneObjc?.name)
}
}
Hope it is helpful