将 String 的映射填充到公共接口的 Spring bean

Question

In my Spring boot application, I have an interface as follows:

 public interface I {
    
 }

I have two concrete classes implementing the interface I as follows:

 @Component
 class A implements I {
     private final B dependency1;
     
     public A(B b) {
         this.dependency1 = b;
     }
 }

And second class as follows:

@Compeonent
class C implements I {
     private final D dependency2;
     
     public C(D d) {
         this.dependency2 = d;
     }
 }

Now in a factory class, I am building a map to get the object of specific class depending on some criteria as follows:

  class Factory {

 
  Map<String, I> criteriaToClassMap = new HashMap<>();

  criteriaToClassMap.put("criteria1", new A()); <--I CANNOT DECIDE WHAT TO PUT HERE
  criteriaToClassMap.put("criteria2", new C()); <--I CANNOT DECIDE WHAT TO PUT HERE

   //Here I would like to get fully constructed object
   public I getObject(String criteria) {
       return criteriaToClassMap.get(criteria);
   }
}

In the above two lines, I would like to put a fully constructed object in the value. But I cannot understand how will I get the fully constructed object from Spring here.

Could anyone please help here?

Answer 1

Why not use the created components?

@Component
class Factory {

   Map<String, I> criteriaToClassMap = new HashMap<>();

   public Factory (A a, C c) {
       criteriaToClassMap.put("criteria1", a); //<-- use autowired A component
       criteriaToClassMap.put("criteria2", c); //<-- use autowired C component
   }

   public I getObject(String criteria) {
       return criteriaToClassMap.get(criteria);
   }

}