aspected model classes

tetrione · **Posted:** Sat Jul 31, 2004 7:26 pm

I was looking for a way to aspectize my model objects.

One way I found is thru AspectJ, but ... it would not play well with IoC container like Spring for example. Which is one of the big reasons I do not like the solution.

What I was thinking is that I can set the class to be proxied, but is there a way to provide a proxy factory to generate that proxy whenever hibernate needs to create an object/proxy of the class?

Or maybe there is a better way of doing it?

lancespeelmon · **Joined:** Sat Sep 04, 2004 2:41 am **Posts:** 2

I too have been thinking about how to address this problem. While people may have performance concerns, I would like to try using Spring's AOP capabilities to proxy all(?) of my objects.

Ideally, we would modify the Hibernate code and somehow have it get instances of model beans from Spring's bean factory instead of using "new". I hope that Gavin and Rod are thinking about how this could be accomplished. :)

For the time being, I have come up with a solution that I think could be workable. Let's assume that you have your POJO model bean defined in Spring IoC with some AOP interceptors. I think you can use the delegate pattern...

Code:

public class SpringAopProxyModelBean
{
  private static final ApplicationContext APPCTX;

  static
  {
    APPCTX = null; // get a reference to the Spring AppContext
  }

  private ModelBean modelBean = APPCTX.getBean("modelBean");
  
  public String getId()
  {
    return modelBean.getId();
  }
  
  public void setId(String id)
  {
    modelBean.setId(id);
  }
}

L