Adam Bien's Weblog
Wednesday Sep 12, 2012
How To Discover All Deployed Beans
import javax.enterprise.inject.Any;
import javax.enterprise.inject.spi.Bean;
import javax.enterprise.inject.spi.BeanManager;
import javax.enterprise.util.AnnotationLiteral;
@Inject
BeanManager beanManager;
Set<Bean<?>> beans = beanManager.getBeans(Object.class,new AnnotationLiteral<Any>() {}));
for (Bean<?> bean : beans) {
System.out.println(bean.getBeanClass().getName());
}
Enjoy discovering!
See you at Upcoming Java EE Workhops at MUC Airport!
Posted at 05:37PM Sep 12, 2012 by Adam Bien in Real World Java EE Patterns - Rethinking Best Practices | Comments[6] | Views/Hits: 3218
NEW Workshop: "JPA, NoSQL, Caching, Grids and Distributed Caches with Java EE 7", May 7th, 2013, Airport Munich
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Cool! BeanManager is new for me. Nice to know. Tnx.
BTW the "private" keyword can be left out ;-) (http://www.adam-bien.com/roller/abien/entry/why_not_private_visibility_for)
Posted by Ivar on September 12, 2012 at 05:47 PM CEST #
I think there is something missing in the beans declaration. Am I wrong?
Posted by frank on September 12, 2012 at 09:17 PM CEST #
Nice one! Is there a recipe for Java EE 5, too?
Posted by Danilo Piazzalunga on September 12, 2012 at 11:18 PM CEST #
Hi Ivar,
sorry for the bloat--I removed "private",
thanks!,
adam
Posted by Adam Bien on September 13, 2012 at 02:12 AM CEST #
@Frank,
you are not wrong--I always forget to escape generics (lesser than, greater than characters) and they are going to be swallowed by the browser.
Not it is fixed!,
adam
Posted by Adam Bien on September 13, 2012 at 02:13 AM CEST #
Adam, how can I get an instance of the bean.getBeanClass()?
I tried:
CreationalContext<?> creationalContext = beanManager.createCreationalContext(bean);
beanManager.getReference(bean, bean.getBeanClass(), creationalContext);
It worked, Is it right?
Thanks.
Posted by Sandro on December 04, 2012 at 10:48 PM CET #