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From "Muhammad Momin Rashid" <mo...@amaana.com>
Subject Re: Form Bean and decions based on Business Logic calls
Date Sun, 25 Jul 2004 15:06:12 GMT
Thank you for your answer, aparently in my persuit for something different I
had overlooked such basic things.  You answer has refreshed my knowledge.
Sometimes we press too hard for answers which are already in front of us.

Once again thanks for your time and effort.  I really appreciate your
guidance.

Regards,
Muhammad Momin Rashid.

"Robert Taylor" <rtaylor@mulework.com> wrote in message
news:OCEBJBKGJIBAILNJEGCKCEPFICAA.rtaylor@mulework.com...
> The information which exists in the query string is just string values.
> The correpsonding parameter names can be defined in the form.
> When invoked, Struts will populate the form and pass it on to the action
> class. The action class extracts the values from the form and passes them
> to the business logic. The business logic does its thing and returns some
> values to the action class. The action class then uses these values to
> decide where to send the user.
>
> robert
>
> > -----Original Message-----
> > From: news [mailto:news@sea.gmane.org]On Behalf Of Muhammad Momin Rashid
> > Sent: Saturday, July 24, 2004 7:54 AM
> > To: user@struts.apache.org
> > Subject: Re: Form Bean and decions based on Business Logic calls
> >
> >
> > Ok, I guess thats fair enough to keep business logic calls limited to
action
> > classes only.
> >
> > How do you suggest I impliemnt the case where the user is supposed to
> > directly land on a URL, and some information from business logic is
> > required.
> >
> > e.g the case where user clicks on a forgot password email sent to
him/her.
> > Here the information embeded in the URL needs to be sent to the Business
> > Logic for processing.  Based on information returned by the Business
Logic
> > the user is allowed to proceed to reset password or not.
> >
> > Regards,
> > Muhammad Momin Rashid
> >
> > "Robert Taylor" <rtaylor@mulework.com> wrote in message
> > news:OCEBJBKGJIBAILNJEGCKMEJGICAA.rtaylor@mulework.com...
> > > As Jim already mentioned, its best to keep the form beans as simple as
> > possible
> > > and void of logic.
> > >
> > > Place calls to business logic or delegates in the action class.
> > >
> > > robert
> > >
> > > > -----Original Message-----
> > > > From: news [mailto:news@sea.gmane.org]On Behalf Of Muhammad Momin
Rashid
> > > > Sent: Thursday, July 22, 2004 12:30 PM
> > > > To: user@struts.apache.org
> > > > Subject: Re: Form Bean and decions based on Business Logic calls
> > > >
> > > >
> > > > Thank you for your quick response.
> > > >
> > > > I do have the appropriate action class with the desired forwards
defined
> > (as
> > > > you have also outlined), but the problem is that the form bean
itself is
> > > > making the business logic calls to get its desired data.  Upon
failure
> > to
> > > > get the desired data, how can I forward to a different page?
Keeping in
> > > > mind that the decision to forward to an failure action is to be done
> > within
> > > > the Form Bean here.
> > > >
> > > > I am also interested in knowing if this is the correct approach to
have
> > the
> > > > form bean make such calls.  If not, then kindly suggest a better
> > > > implementation.
> > > >
> > > > Regards,
> > > > Muhammad Momin Rashid.
> > > >
> > > > "Robert Taylor" <rtaylor@mulework.com> wrote in message
> > > > news:OCEBJBKGJIBAILNJEGCKAEIOICAA.rtaylor@mulework.com...
> > > > > Define success and failure forwards in your struts-config file for
the
> > > > > specified action.
> > > > >
> > > > > In the action class (which should delegate to a business object),
> > > > > retrieve the data. Upon failure, forward to the "failure" forward,
> > > > > else forward to the "success" forward.
> > > > >
> > > > > You could achieve the same using declarative exceptions.
> > > > >
> > > > > If the list of countries doesn't vary between users, you
> > > > > can do this when your application starts up and place the
> > > > > country list in ServletContext. In this fashion, you only
> > > > > have a single database hit for getting the countries.
> > > > >
> > > > > robert
> > > > >
> > > > > > -----Original Message-----
> > > > > > From: news [mailto:news@sea.gmane.org]On Behalf Of Muhammad
Momin
> > Rashid
> > > > > > Sent: Thursday, July 22, 2004 10:38 AM
> > > > > > To: user@struts.apache.org
> > > > > > Subject: Form Bean and decions based on Business Logic calls
> > > > > >
> > > > > >
> > > > > > Hello,
> > > > > >
> > > > > > I have a form bean which needs to retrieve some information
from
the
> > > > > > business logic.  I want to know how I can redirect to different
> > pages on
> > > > the
> > > > > > bases of data retrieved.
> > > > > >
> > > > > > e.g. I need to retrieve and display a list of countries for
the
user
> > to
> > > > > > select from.  In case of failure to retrieve the information
I
would
> > > > like to
> > > > > > take user to a different page to indicate error.
> > > > > >
> > > > > > What would be the best way to accomplish this?  I am using
struts
> > 1.1
> > > > with
> > > > > > Tiles.
> > > > > >
> > > > > > Regards,
> > > > > > Muhammad Momin Rashid
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > >
> > > ---------------------------------------------------------------------
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> > > > > >
> > > >
> > > >
> > > >
> > > >
> > >
> ---------------------------------------------------------------------
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> > > >
> >
> >
> >
> >
> > ---------------------------------------------------------------------
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> >
> >




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