Re: [Springframework-developer] how to determine if a bean exists in registry?

[<jue...@we...>]

Why not use ListableBeanFactory's getBeanDefinitionNames method? If the =
returned String array contains the bean name, then it is available in =
the factory.
=20
It would still make sense to add a containsBean method to BeanFactory, I =
guess, to avoid workarounds like isSingleton or getAliases checks. If =
noone objects, I'll do that - is that OK with you, Darren? Rod, what do =
you think?
=20
Juergen
=20

________________________________

Von: spr...@li... im Auftrag =
von Kopylenko, Dmitry
Gesendet: Mi 19.11.2003 21:46
An: 'spr...@li...'
Betreff: RE: [Springframework-developer] how to determine if a bean =
exists in registry?


If there is a big demand for such a "query" method I could add it to =
BeanFactory or AbstractBeanFactory. What everybody thinks?
=20
Dmitriy.

	-----Original Message-----
	From: Rajeev Kaul [mailto:Ra...@cu...]=20
	Sent: Wednesday, November 19, 2003 3:42 PM
	To: spr...@li...
	Subject: Re: [Springframework-developer] how to determine if a bean =
exists in registry?
=09
=09
	 Although, I would still prefer a simpler method that just returns a =
boolean, but your solution will work for me.
	=20
	Thanks!!!!
	=20
	=20
	----- Original Message -----=20

		From: Dmitriy Kopylenko <mailto:dko...@ru...> =20
		To: spr...@li...=20
		Sent: Wednesday, November 19, 2003 11:15 AM
		Subject: RE: [Springframework-developer] how to determine if a bean =
exists in registry?

		Or better yet use AbstractBeanFactory.getBeanDefinition(String =
beanName) which would throw NoSuchBeanDefinitionException if bean does =
not exist.
		=20
		Regards,
		Dmitriy.

			-----Original Message-----
			From: spr...@li... =
[mailto:spr...@li...] On Behalf =
Of Kopylenko, Dmitry
			Sent: Wednesday, November 19, 2003 2:08 PM
			To: 'spr...@li...'
			Subject: RE: [Springframework-developer] how to determine if a bean =
exists in registry?
		=09
		=09
			Rajeev,
			=20
			you could use String[] getAliases(String name) throws =
NoSuchBeanDefinitionException in BeanFactory and catch =
NoSuchBeanDefinitionException. If caught, then bean does not exist in =
the factory.
			=20
			Dmitriy.

				-----Original Message-----
				From: Rajeev Kaul [mailto:Ra...@cu...]=20
				Sent: Wednesday, November 19, 2003 1:54 PM
				To: spr...@li...
				Subject: [Springframework-developer] how to determine if a bean =
exists in registry?
			=09
			=09
				Is there an easy way to determine if a certain bean exists in the =
beanFactory?  I know one can use the getBean(name) to determine that, =
but it seems an expensive call,  especially, if there are bean post =
processors associated with it.  Don't you think having a function like   =
 boolean containsBean(String beanName) in a beanFactory class would be =
useful here?
				=20
				Rajeev Kaul
			=09