Re: [Springframework-developer] AutoProxyCreator problem

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It's meant to be an SPI interface. However I think with the PostProcessor
API there may be a call for exposing the BeanDefinition to _That_. Not via
the BeanFactoyr interface though.

R
----- Original Message ----- 
From: "Kopylenko, Dmitry" <dko...@su...>
To: <spr...@li...>
Sent: Thursday, November 20, 2003 8:00 PM
Subject: RE: [Springframework-developer] AutoProxyCreator problem

> Rajeev,
>
> You're right. There is no public API for getBeanDefinition(). There is a
> protected abstract getBeanDefinition(String) in AbstractBeanFactory
designed
> for subclasses to implement "Template Method" design pattern.
>
> Regards,
> Dmitriy.
>
> -----Original Message-----
> From: Rajeev Kaul [mailto:Ra...@cu...]
> Sent: Thursday, November 20, 2003 2:39 PM
> To: spr...@li...
> Subject: Re: [Springframework-developer] AutoProxyCreator problem
>
>
> Dmitry,
>
> How do you get the bean definition from a bean factory?  There does not
seem
> to be any public method for it.
>
> regards,
>
> Rajeev
> ----- Original Message -----
> From: "Kopylenko, Dmitry" <dko...@su...>
> To: "'Rajeev Kaul '" <Ra...@cu...>;
> <spr...@li...>
> Sent: Wednesday, November 19, 2003 5:16 PM
> Subject: RE: [Springframework-developer] AutoProxyCreator problem
>
>
> > As to your first problem, you would need to create a new instance of
> > the BeanFactory Consider the following piece of code (taken from
> > EnterpriseServices.createInvokerInterceptor() ):
> >
> > // Infinite cycle: tries to create the bean if we don't use a
> > different factory ListableBeanFactoryImpl bf2 = new
> > ListableBeanFactoryImpl(); bf2.registerBeanDefinition(beanName,
> > definition); cpii.setBeanFactory(bf2);
> >
> > ...where cpii is the reference of type
> > AbstractPoolingInvokerInterceptor which extends
> > PrototypeInvokerInterceptor
> >
> > I guess this is what you need.
> >
> > Dmitriy.
> >
> > -----Original Message-----
> > From: Rajeev Kaul
> > To: spr...@li...
> > Sent: 11/19/2003 7:33 PM
> > Subject: Re: [Springframework-developer] AutoProxyCreator problem
> >
> > I am thinking of a solution for condensing the verbose configuration
> > (shown below) for prototype business logic beans I am using in my
> > application.  A shared controller instance (singelton) creates the
> > business logic bean.  However the business logic bean must be
> > instantiated per each thread that runs through the shared controller.
> > I have been using the configuration shown below:
> >
> >
> > <bean id="prototypeBean" class="xyz.BusLogicBean" singleton="false">
> >
> > <property name="count"><value>10</value></property>
> >
> > </bean>
> >
> > <bean id="prototypeInvokerInterceptor"
> > class="org.springframework.aop.interceptor.PrototypeInvokerInterceptor
> > ">
> >
> >
> > <property
> > name="targetBeanName"><value>prototypeBean</value></property>
> >
> > </bean>
> >
> > <bean id="prototype"
> > class="org.springframework.aop.framework.ProxyFactoryBean">
> >
> > <property
> > name="interceptorNames"><value>prototypeInvokerInterceptor</value></pr
> > op
> > erty>
> >
> > </bean>
> >
> >
> >
> > As you can see this is very verbose, especially if you have a lot of
> > these business logic beans in your application.  I tried using a
> > derived version of BeanNameAutoProxyCreator to solve this, but ran
> > into problems. I would like to replace this configuration with
> > something shown below:
> >
> >
> >
> > <bean id="prototypeBean" class="xyz.BusLogicBean" singleton="false"
> > proxy="prototype">
> >
> > <property name="count"><value>10</value></property>
> >
> > </bean>
> >
> > This would involve adding a "PROXY" attribute which would specify the
> > type of proxy interceptor desired for the bean.  For example,
> > "prototype" would mean ProxyFactoryBean with
> > PrototypeInvokerInterceptor, "default" would mean ProxyFactoryBean
> > with InvokerInterceptor, etc.  In loadBeanDefinition() method of the
> > XmlBeanFactory class, the supporting proxy classes (ProxyFactoryBean
> > and PrototypeInvokerInterceptor) could be automatically generated and
> > registered.
> >
> > Any suggestions, comments, ...?
> >
> >
> >
> > Rajeev
> >
> > ----- Original Message -----
> > From: Rajeev Kaul <mailto:Ra...@cu...>
> > To: spr...@li...
> > <mailto:spr...@li...>
> > Sent: Tuesday, November 18, 2003 1:29 PM
> > Subject: [Springframework-developer] AutoProxyCreator problem
> >
> >
> > I have been trying to use BeanNameAutoProxyCreator class (I noticed
> > there are no test cases for it) to create proxies for "prototype"
> > business objects. I extended the BeanNameAutoProxyCreator class to use
> > the PrototypeInvokerInterceptor in the "createInvokerInterceptor()"
> > method.  However, this results in an infinite loop, as the
> > PrototypeInvokerInterceptor calls the beanFactory getBean() method
> > which in turn triggers the beanPostProcessor and the cycle repeats
> > endlessly.
> >
> > Any suggestions on getting around this problem?
> >
> > It would have been better, if the BeanNameAutoProxyCreator class was
> > designed to take invokerInterceptor as a property, which could be
> > specified in the configuration, instead of having to subclass it to
> > use other invokerInterceptor(s).
> >
> > Rajeev Kaul
> >
> >
> >
> >
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>
>
>
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