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JSF web app example (CDI, bean validation)

 
Karsten Wutzke
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Hello,

I've stumbled across this:

http://docs.jboss.org/weld/reference/latest/en-US/html_single/#example

It shows how to implement a login with JavaEE 6/CDI.

1. Why is the Credentials bean request-scoped and not session-scoped?
2. What's the purpose of the custom annotations @LoggedIn and @UserDatabase ("custom qualifier annotations"). Can anybody point me to good document explaining the principle behind this and why this programming model is necessary/desirable?

It seems to be core CDI, but unfortunately I'm short in time reading a lot documentation.

Thanks
Karsten
 
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