[aspectj-users] @DeclareMixin and access to mixxed in object properties

[jiramares@xxxxxxxxx]

Hallo,

I'm using annotations to create aspects and I would like to make same thing as :

public aspect Item2Xml {

   public void Item.preXmlMarschalCheck() {
      if (this.getXmlDescription() == null) 
         throw new DARequiredException(DAExceptionType.REQUIRED_ERROR, new ObjectProperties(Item.class.getName(), "xmlDescription"));
   }

}

So I add method to the class Item where I access the local method getXmlDescription() ......

But using the @DeclareMixin the only way how to make this is (as I know):

@Aspect
public class Item2Xml {

   public interface WithProperties2Xml {
      void preXmlMarschalCheck();
   }

   public static class WithProperties2XmlImpl implements WithProperties2Xml {
      private Item item;

      protected WithProperties2XmlImpl(Item item) {
         super();
         this.item = item;
      }

      public void preXmlMarschalCheck() {
         if (item.getXmlDescription() == null) throw new DARequiredException(REQUIRED_ERROR, new ObjectProperties(Item.class.getName(), "xmlDescription"));
      }

   }

   @DeclareMixin("cz.svt.dao.hibernate.Item")
   public static WithProperties2Xml createWithProperties2Xml(Item item) {
      return new WithProperties2XmlImpl(item);
   }

}

This looks more complicated than it should be ... is there a better way (eg. make WithProperties2XmlImpl extending the Item)?

Thanks for help

Jirka