Re: [Springframework-developer] New deferred close mode for OpenSessionInViewFilter/Interceptor

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

Colin,

As I was just discussing the issue with a colleague of mine, and as =
you're known to not like the Open Session in View pattern ;-)

What do you think regarding this "deferred close" mode for =
OpenSessionInViewFilter/Interceptor that I've introduced a while ago? =
That combination of correct transactional semantics plus lazy loading in =
the view is a quite nice way to avoid the drawbacks of the classic =
OpenSessionInViewFilter (what's now called "single session" mode). It =
should never cause side effects but still allow for flexible lazy =
loading.

Juergen


-----Original Message-----
From: spr...@li...
[mailto:spr...@li...]On Behalf
Of j=FCrgen h=F6ller [werk3AT]
Sent: Friday, July 09, 2004 7:39 PM
To: spr...@li...
Subject: [Springframework-developer] New deferred close mode for
OpenSessionInViewFilter/Interceptor


Due to numerous recent requests in that direction, I've implemented a =
new mode for OpenSessionInViewFilter/Interceptor, as alternative to a =
single session per request:=20

Each data access operation respectively transactions uses its own =
Hibernate Session (like when not using Open Session in View). Each of =
those sessions will be registered for deferred close, though, actually =
processed at request completion. This does allow for lazy loading with =
each of those sessions, but you won't get a single first-level cache for =
the entire request, as there can be multiple Sessions.=20

OpenSessionInViewFilter/Interceptor still uses a single session per =
request by default, but allows to activate deferred close mode instead =
by specifying "singleSession"=3D"false" as init-param respectively bean =
property.=20

Juergen
=20


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