will there be a performance gain to use singleton to remove references to the service object in models?

Hi all, Although I am using spring-wicket to prevent the whole spring being serialized, It still brothers me to see the references in the model object, for example: Instead of using this: public class MyViewObjectProvider extends SortableDataProvider{ @SpringBean("daoService") pr

Re: will there be a performance gain to use singleton to remove references to the service object in models?

Hi Jason I dont have a performance comparison, but i cannot see why you should gain better performance. All spring beans are as default singleton, so you will just forward a singleton using a singleton. /Murat 2009/7/28 Jason Wang : > Hi all, > > Although I am using spring-wicket to prevent the

Re: will there be a performance gain to use singleton to remove references to the service object in models?

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Re: will there be a performance gain to use singleton to remove references to the service object in models?

It might give you a very slight edge to use a singleton as you (or the annotation processor in this case) don't have to introspect and work through a proxy. If you're not bothered by singletons (I, for one typically are): go for it. However, keep that famous 'premature optimization is the root of a

Re: will there be a performance gain to use singleton to remove references to the service object in models?

Actually, thinking about it, if you're very tight on memory, it will save you a reference, particularly when the page gets serialized. So if you are worrying about efficiency *and* are ok with this code style, it's an option. :-) Eelco On Tue, Jul 28, 2009 at 12:47 AM, Eelco Hillenius wrote: > It

Re: will there be a performance gain to use singleton to remove references to the service object in models?

There's the risk of keeping the retrieved service as a reference somewhere, e.g. by declaring it final and using it inside an anon inner class, negating any and all gains you've done by using the static lookup. The @SpringBean annotated references are safe to pass around (as they are implemented as

Re: will there be a performance gain to use singleton to remove references to the service object in models?

also safe to do with salve because it removes the field and rewrites field reads with lookups. wicket-spring and salve were created for a reason - to make it easy to work with services in an environment where objects are often serialized. salve doesnt have the memory overhead of wicket's @SpringB

Re: will there be a performance gain to use singleton to remove references to the service object in models?

Don't guess, profile it. 2009/7/28 Jason Wang : > Hi all, > > Although I am using spring-wicket to prevent the whole spring being > serialized, It still brothers me to  see the  references in the model > object, for example: > > Instead of using this: > > public class MyViewObjectProvider extends

Re: will there be a performance gain to use singleton to remove references to the service object in models?

Hi Martijin, Thats a very good point. I definitely overlooked that risk before. Thank you for pointing it out! Thanks, Jason Wang Martijn Dashorst wrote: There's the risk of keeping the retrieved service as a reference somewhere, e.g. by declaring it final and using it inside an anon inner