Dynamically parameterized prototypes?!

[nc020872]

Hi

I've been reading up on Spring lately and it looks quite nice, but lets say I want to do someting like this

public interface AddRoleCommand {
   public void execute();
}

public class AddRoleCommandImpl implements AddRoleCommand {
   private Person user;
   private Role role;

   public AddRoleCommandImpl (Person user, Role role) {
      this.user = user;
      this.role = role;
   }

   public void execute() {
      // do some checks
      // do the real stuff
   }
}

Is it possible to pass 'user' and 'role' to a constructor of a prototype bean? Is there a way to do it cleany in without knowning the implementation, except maybe in configuration files of Spring?!

Thanks

[irbouho]

I do not, really, understand what you are trying to achieve as I do not understand where User and Role instances come from?
You can use the following code to configure a command:

<bean id="user" .../>
<bean id="role" .../>
<bean id="command" class="AddRoleCommandImpl">
  <contructor-arg index="0"><ref local="user"/></contructor-arg>
  <contructor-arg index="1"><ref local="role"/></contructor-arg>
<bean>

You can hide the implementation in your code by simply using the AddRoleCommand interface to access bean command.
HTH