creational pattern for instances depending on multiple subclass instances
- by markusw
I have a problem, for that I was not able to identify a suitable design pattern.
I want to create instances depending on a given type that has been passed to a factory method. What I am doing until now is the following:
T create(SuperType x) {
if (x instanceof SubType1) {
// do some stuff and return a new SubType extends T
} else if (x instanceof SubType2) {
// do some stuff and return a new SubType extends T
} else if ...
} else {
throw new UnSupportedOperationException("nothing defined for " + x);
}
}
It seems not to be best pratice for me.
Has anybody an idea how to solve this in a better way?
