Accessing Class Variables by enum - swift

Question

I have following code which basically defines enum for different companies and different methods for each company.
protocol Fetcher {
func getDetail()
static var idRegex:String {get}
}
class FooFetcher:Fetcher {
static var idRegex = "(^\\d{5}$)"
var company = Company.Foo
init (name:String?, id:String) {
println("Name: \(name) id: \(id)")
}
func getDetail() {
println("Foo Get detail")
}
}
class BarFetcher:Fetcher {
static var idRegex = "(^\\d{11}$)"
var company = Company.Bar
init (name:String?, id:String) {
println("Name: \(name) id: \(id)")
}
func getDetail() {
println("Bar Get detail")
}
}
enum Company:Int {
case Foo
case Bar
func fetcher(name:String?, id:String) -> AnyObject {
switch self {
case Foo:
return FooFetcher(name: name, id: id)
case .Bar:
return BarFetcher(name: name, id: id)
}
}
}
var compList = [Company.Foo , Company.Bar]
How can I get idRegex by using compList array only? I don't want to create another array like [FooFetcher.idRegex,BarFetcher.idRegex] because it will bloat the file. I want to use enum because it is easy to store their rawValue with Core Data.
I also wonder how to write better fetcher function for Company enum. Currently I use fetcher function like below
var company = Company.Foo
var strategy = company.fetcher("Some name", id: "Some id") as! Fetcher
strategy.getDetail()

Answer 1

AnyObject does not support Fetcher, in the company.fetcher function instead of returning AnyObject is -> Fetcher
enum Company:Int {
case Foo
case Bar
func fetcher(name:String?, id:String) -> Fetcher {
switch self {
case .Foo:
return FooFetcher(name: name, id: id)
case .Bar:
return BarFetcher(name: name, id: id)
}
}
}
FOO also there corresponds almost .foo

Answer 2

Along with eliasRuizHz's answer, add a new regex method to the Company enum.
func regex() -> String {
switch self {
case .Foo:
return FooFetcher.idRegex
case .Bar:
return BarFetcher.idRegex
}
}

Answer 3

The two responses both provide good contributions. For example, returning a Fetcher rather than AnyObject makes complete sense, as does a regex() function. The thing that I query, however, is whether you could use enums with associated values rather than this enum + class approach, but putting that to one side and answering the question in hand if you really want to directly access the .idRegex from an instance then it needs to be a regular instance variable not a class variable. One way to have it both ways is to return the type variable through an instance variable like so:
protocol Fetcher {
func getDetail()
var idRegex:String {get}
static var regex:String {get}
}
class FooFetcher:Fetcher {
static var regex = "(^\\d{5}$)"
var idRegex:String { return FooFetcher.regex }
var company = Company.Foo
init (name:String?, id:String) {
println("Name: \(name) id: \(id)")
}
func getDetail() {
println("Foo Get detail")
}
}
class BarFetcher:Fetcher {
static var regex = "(^\\d{11}$)"
var idRegex:String { return BarFetcher.regex }
var company = Company.Bar
init (name:String?, id:String) {
println("Name: \(name) id: \(id)")
}
func getDetail() {
println("Bar Get detail")
}
}
enum Company:Int {
case Foo
case Bar
func fetcher(name:String?, id:String) -> Fetcher {
switch self {
case Foo:
return FooFetcher(name: name, id: id)
case .Bar:
return BarFetcher(name: name, id: id)
}
}
}
var compList = [Company.Foo, Company.Bar]
var company = Company.Foo
var strategy = company.fetcher("Some name", id: "Some id")
strategy.getDetail()
strategy.idRegex
Edit Responding to Query
If you want the fetcher to not necessarily initialize an instance then set whatever requirement there is to determine whether a value or nil is returned.
enum Company:Int {
case Foo
case Bar
func fetcher(name:String?, id:String) -> Fetcher? {
switch self {
case Foo:
if FooFetcher.regex == "(^\\d{11}$)" {
return FooFetcher(name: name, id: id)}
else {return nil}
case .Bar:
if BarFetcher.regex == "(^\\d{11}$)" {
return BarFetcher(name: name, id: id)
}
else {return nil}
}
}
}
var compList = [Company.Foo, Company.Bar]
var company = Company.Foo
var strategy = company.fetcher("Some name", id: "Some id")
strategy?.getDetail()
strategy?.idRegex