Guice singleton scope
Hi all, I wanted to try the @Singleton annotation in guice with sort of data facade. What concerns me is the scope of the created singleton. Javadoc says its a singleton per Injector. So if I create configured InjectorHolder and return Injector in Application's init(), does it mean there is a singleton for the whole application (thus for all sessions)? I would prefer per session based singleton, because the facade construction is not short, I don't want to instantiate it every time it's injected. Have you ever considered this -- any ideas? Regards, -- Marek Šabo - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: Guice singleton scope
That's not a singleton at all. That's a session-scoped bean. On Wed, May 26, 2010 at 12:45 PM, Marek Šabo ms...@buk.cvut.cz wrote: Hi all, I wanted to try the @Singleton annotation in guice with sort of data facade. What concerns me is the scope of the created singleton. Javadoc says its a singleton per Injector. So if I create configured InjectorHolder and return Injector in Application's init(), does it mean there is a singleton for the whole application (thus for all sessions)? I would prefer per session based singleton, because the facade construction is not short, I don't want to instantiate it every time it's injected. Have you ever considered this -- any ideas? Regards, -- Marek Šabo - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: Guice singleton scope
Yes, I gather that is correct term for this. What would be the proper way to implement it? Just put a referrence with @Inject in the custom WebSession? Anyway, ad my first question, I suppose then the singleton would be in the scope of whole application thus needing synchronization. Regards On 05/26/2010 06:48 PM, James Carman wrote: That's not a singleton at all. That's a session-scoped bean. On Wed, May 26, 2010 at 12:45 PM, Marek Šabo ms...@buk.cvut.cz wrote: Hi all, I wanted to try the @Singleton annotation in guice with sort of data facade. What concerns me is the scope of the created singleton. Javadoc says its a singleton per Injector. So if I create configured InjectorHolder and return Injector in Application's init(), does it mean there is a singleton for the whole application (thus for all sessions)? I would prefer per session based singleton, because the facade construction is not short, I don't want to instantiate it every time it's injected. Have you ever considered this -- any ideas? Regards, -- Marek Šabo - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org -- Marek Šabo Server Manager Club SU CVUT Buben Bubenečská Kolej (421) XMPP: zeratul...@gmail.com - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
Re: Guice singleton scope
On Wed, May 26, 2010 at 1:05 PM, Marek Šabo ms...@buk.cvut.cz wrote: Yes, I gather that is correct term for this. What would be the proper way to implement it? Just put a referrence with @Inject in the custom WebSession? Anyway, ad my first question, I suppose then the singleton would be in the scope of whole application thus needing synchronization. There's no problem making your bean @SessionScoped, but that doesn't necessarily guarantee that you only have one thread going through it at a time. Do you need to worry about threading? What kind of bean is it? - To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org
