-none- 2007-09-01 - By Jeromy Evans
Back
Hi Hayrol,
I'm currently involved with a a). S2 project that doesn't use any IOC
framework, b). one that uses S2+Guice, c). another with S2+Spring and
other d). with S2+EJB3 (all with JPA/Hibernate3)
a) If you don't use an IOC framework you'll find you have to provide
services to your actions anyway either by injection from your own S2
interceptor, via the servlet context, a service locator or singletons.
For a project of any reasonable size it quickly gets out of hand, but
you can get survive. You will need to write your own Session-in-view
interceptor for Hibernate if you need that.
b). Guice integrates easily with S2 and is very elegant and simple to
use. You'll be able to inject dependencies into your actions and use
the basics of AOP. It's pleasant to use if all you want is @(protected)
You'll need to write your own session-in-view interceptor for Hibernate
if you need that. It doesn't provide anything else, which is nice in
some regards. I definitely recommend it over a).
c). Spring integrates easily with S2 and simplifies integration with
most other things you may need (web services, JMS, mail, AOP etc). It's
a massive time-saver, but if you don't really know what you're doing, or
don't really understand how spring works it's easy to stuff things up or
simply get confused. Most of the criticism spring receives is because
programmers have used and abused it (ie. they end-up coding in XML
instead of java due to their own/teams poor design and don't understand
spring errors). Its inevitable you'll have to learn Spring at some
point because it's everywhere and not about to go away. I definitely
recommend it over a).
d). Although EJB3 is a massive simplification compared to prior
versions, it's not a productivity-focused framework like b. or c.. It
doesn't integrate with S2 at all (eg. can't inject into actions without
providing your own mechanism) and I find it's better to use b. or. c. to
access EJB3 services. The benefit of EJB3 is that it forces you to
focus on aspects of the architecture that are important for large-scale
projects (such as ensuring services can pooled, distributed, passivated
and a constant focus on transactions and security), but this is
irrelevant for most web projects. I wouldn't recommend it unless you had
a lot of prior experience and a genuine need (eg. consider it if you're
considering distributed transactions).
Hope that's helpful. I won't ever get into an argument about the
benefit of b). vs. c). vs. d). because they're all useful under certain
circumstances and most Java forums already contain a useless thread on
the topic.
cheers,
Jeromy Evans
Hayrol Reyes Mej?a wrote:
> Ok, thanks guys.
>
> But it's not completely clear for me why to use: Struts2 + Spring2 +
Hibernate3 ... if I can do the same with Struts2 + Hibernate3 avoiding a layer
of possible problems. Maybe it's because I think of a MVC framework that
provide me all the necessary to build the View of the application with JSP the
controler with Actions and Mappings and the interface model with Hibernate
without the need to look away for other solutions parts.
>
> Any way, I'll have to give a look to Spring sections that "rocks" and try it
according to documentations I found.
>
> Best Regards,
>
> Hayrol
>
>
>
>
>> Date: Fri, 31 Aug 2007 22:40:48 -0400> From: musachy@(protected)> To: user
@(protected)> Subject: Re: Struts 2 !!!OK!!! cannot we live without Spring
?> > Plus, if you haven't used Spring, you should give it a try, it rocks,>
except the MVC, IMO (but I'm biased anyway :) )> > musachy> > > > On 8/31/07,
Dave Newton <newton.dave@(protected)> wrote:> > --- Hayrol Reyes Mej?a <hayrolr
@(protected)> wrote:> > > why I have found several documentation, tutorials,> >
> etc, that always include Spring? ... It's supposed> > > that we need to live
with Spring for the rest of> > > the live?> >> > You don't need to use Spring
if you don't want to.> >> > Spring consists of many independent parts; you do
not> > need to use all of it -- the primary use in S2> > applications is
primarily dependency injection, which> > is very simple to set up and maintain.
> >> > I suspect many of us also use it for database access,> > but that's
certainly not required (although it's a> > pretty good idea, in my opinion).> >
> > d.> >> >> > -- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ------
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