Spring Prototype scoped bean in a singleton

Question

I am trying to inject a prototype bean in a singleton bean such that every new call to a singleton bean method has a new instance of the prototype

Answer 1

Singleton bean is created only once so the prototype bean which is injected also will be created once at the instantiation of singleton bean.The same instance of prototype bean will be used for every request.

If new instance of prototype bean will be created for each request at runtime ,the below method Injection can be used

Example

public class Singleton {
    private Prototype prototype;

    public Singleton(Prototype prototype) {
        this.prototype = prototype;
    }

    public void doSomething() {
         prototype.foo();
    }

    public void doSomethingElse() {
        prototype.bar();
    }
}

public abstract class Singleton {
    protected abstract Prototype createPrototype();

    public void doSomething() {
        createPrototype().foo();
    }

    public void doSomethingElse() {
        createPrototype().bar();
    }
}