Aware

Webwork in Actionを見てXXXAwareの使い方を知る。

public interface AccountAware{

  void setAccount(Account account);

}

public class MainAction extends ActionSupport implements AccountAware{

  private Account _account;

  

  public String execute(){

    //セット済み

    System.out.println(_account);

  }
  public void setAccount(Account account){

    _account = account;

  }

}
public class AuthenticationInterceptor implements Interceptor{

  public void destroy(){}

  public void init(){}
  public String intercept(ActionInvocation actionInvocation) throws Exception{

    Map session = actionInvocation.getInvocationContext().getSession();

    Account account = (Account) session.get(AUTH_KEY);

    if(account == null){

      return LOGIN;

    }else{

      Action action = actionInvocation.getAction();

      if(action instanceOf AccountAware){

        ((AccountAware)action).setAccount(account);

      }

      return actionInvocation.invoke();

    }

  }

}

なるほど