✅ Factory Method Pattern
Does someone have a good explanation or perhaps a link to somewhere where i can learn this? Been trying to find a video or similar but it just doesn't stick :(
Pso you know how constructors work right?
MI think soooo
Pvar x = new Product("Apple", 15, 3.5); etcMWe store an instance of Product inside var x ?
Psure, but the "constructor" here is the
new Product("Apple", 15, 3.5) partMSo the constructor is the one that instanciates the object?
Pyes
MOki, then yeah i'm with you :cathype:
Pa "factory" in OOP is a class/method that knows how to create something else. it knows the details needed to call the constructor properly, and maybe set some values on the object before returning it
Pin this case, maybe you dont know what the
15 and 3.5 should bePlets assume
15 is the "Product ID", and that should be an incremeneted number. It would be silly to expect the programmer to constantly keep track of the current ID and manually give itMOki
Pso we can make a "ProductFactory" instead that keeps track of it for us
MWould that be an
abstract class/interface?Puh... probably not
MWeird, i think our teacher specifies it as such 
Pabstract things cant be created, so how would you create the factory?
PAh, are you refering specifically to the "abstract factory" pattern?
MI think so? GoF ?
M
Pyeah
MThis is what she explains it as
Pyeah GoF has an "abstract factory" in it
PFactoryBase here is your abstract factoryPMHow do you know that is abstract
Ptheir explanations are usually pretty good
Pwell it has a
Base suffix and the title is in italicsPand there are other classes called
ConcreteSomethingPconcrete is the opposite of abstract...
MOoh
M
MSo in my case the interface here would be Carfactory?
P?
Pthis is the first time you mention
CarMOh wait i might not have included everything
M
MThis is what i'm working on atm
MAnd i'm trying to implement the Factory method (which i'm currently learning)
Pright
PIn your case
Car would be an abstract base class, not an interface, but otherwise it would fulfill the same role as "Chair" does in the above imageMI see
MMWe were provided an abstract class for
Car in the projectMHmm
Mi’ll finish reading the page, one moment ^^
M
M
MWould the "Client" be my main method?
Pyeah