Re: [Springframework-developer] auto-proxying with dynamic script factories

[Rob H. <rob...@in...>]

David,

The scripting functionality is currently in an inconsistent state. I 
have been working on some modifications and a fix which will be released 
as part of the 1.3 M2/RC2 release branch. Until that time I would not 
recommend that anyone tries to use the current scripting support.

Rob

David Bowers wrote:

> I was looking at the script support in the sandbox and trying to get 
> it to work.  It looks like the structure around AutoProxy-ing has 
> changed its structure quite a bit since this sandbox code was written.
>
> In particular, the following line of code is in 
> AbstractAutowireCapableBeanFactory.createBean.  Since the scripts are 
> created using factory methods, they don't have a class, and never run 
> through the BeanPostProcessor.
>
>         // Give BeanPostProcessors a chance to return a proxy instead 
> of the target bean instance.
>         if (mergedBeanDefinition.hasBeanClass()) {
>             bean = 
> applyBeanPostProcessorsBeforeInstantiation(mergedBeanDefinition.getBeanClass(), 
> beanName);
>             if (bean != null) {
>                 return bean;
>             }
>         }
>
> Later in the same method, after the bean is instantiated, I inserted 
> the following code:
>             bean = instanceWrapper.getWrappedInstance();
>             if (!mergedBeanDefinition.hasBeanClass()) {
>                 Object altBean = 
> applyBeanPostProcessorsBeforeInstantiation(bean.getClass(), beanName);
>                 if (altBean != null) {
>                     return altBean;
>                 }
>             }
> Yes, this is a big semantic violation to call a "beforeInstantiation" 
> method *after* instantiation.  However, this, plus a few changes in 
> the sandbox, gets the Groovy support code to pass most of its tests!  
> Any ideas?
>
> Related to all this, I'm a bit surprised that the dynamic script 
> functionality has been dormant in the sandbox for so long.  Am I the 
> only one who thinks this would be a powerful feature?  Especially for 
> creating test stubs.  Are other people using scripting support with 
> Spring in different ways?


-- 
Rob Harrop
Principal Consultant
Interface21 - Spring Services from the Source
http://www.springframework.com