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From "Michael Jouravlev" <jmi...@gmail.com>
Subject Re: Strategy for Controlling the Session Size
Date Wed, 22 Mar 2006 18:00:56 GMT
On 3/22/06, Mark Lowe <melowe@gmail.com> wrote:
> On 3/22/06, Michael Jouravlev <jmikus@gmail.com> wrote:
> > On 3/22/06, Mark Lowe <melowe@gmail.com> wrote:
> > > For data you need to store across lots of requests, you can create a
> > > simple javaclass to hold the data you need. Something like a StateBean
> > > or even a hashmap, the point is that if you have one object that your
> > > storing things in you know where to look if and when you find you need
> > > to address session size. If you have folk adding the world into the
> > > session all over the place, its going to be harder to address any
> > > issues later in the day. e.g. Map state = (Map)
> > > session.getAttribute("state")
> >
> > Such holder class is already provided by Struts for every action. It
> > is called ActionForm ;) I stick all my action-related... I mean,
> > webresource-related :) stuff into corresponding ActionForm.
>
> If its the from you want in the session, you wont hear any arguements
> from me there. But its also possible that the data you need to store
> isn't really a form, you may need to populate a form with some session
> scoped data (yes it could well be an action form). You may want to
> reset a form but not the session scoped gubbins. One example i can
> think of is maintaining the state of a gui, selected items and such
> like. I never have a real need to have this data mapped to an action.

This data is not mapped to an action, it belongs to a web resource. An
action (or several actions) handle requests to a web resource, while
ActionForm holds state of a web resorce. Instead of fixating on
actions try to concentrate on an ActionForm ;) If Struts had Action
and ActionForm as one class, things would be easier.

I don't care that ActionForm was originally intended to hold request
values. I use it as a web resource state holder and stick all kind of
resource-related stuff into it. Works great for me, all in one place,
accessible. I can also make use of Struts automatic population of
nested properties.

Michael.

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