NavigationHandler API faces.config

[Dave <ja...@yahoo.com>]

Is there any way to access faces.config? 
  I need to know the to-view-id(JSP page) given from-view-id and from-outcome. The NavigationHanlder has only one method handle(..), Thanks.
  Dave

		
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Re: NavigationHandler API faces.config

[Laurie Harper <la...@holoweb.net>]

Dave wrote:
> Is there any way to access faces.config? 
>   I need to know the to-view-id(JSP page) given from-view-id and from-outcome. The NavigationHanlder has only one method handle(..), Thanks.
>   Dave

Unfortunately not, short of parsing faces-config yourself and 
re-implementing the algorithm the navigation handler uses.

L.

Re: NavigationHandler API faces.config

[Craig McClanahan <cr...@apache.org>]

On 1/9/06, Andrew Robinson <an...@gmail.com> wrote:
>
> I had wondered that myself for a time, as it would have made something I
> wrote easier. NavigationHandler really needs to change to make it more
> reusable (ability to get the settings from it instead of just that one
> method.
>
> As for the information, it will not be so easy as there is not necessarily
> one faces configuration file. You can have multiple. You may for example,
> have some to setup renders for example in a JSF controls bean. Therefore the
> question is how to get the file that has your navigation code. The best
> thing I can think of is just to have a setting in your web.config with the
> location of the configuration file you wish to use.
>
> Also be careful that if you are making a reusable component that you may
> want to stick to using the jsf resolution rules (supporting wildcards for
> example).


If your intent is to have access to all of the configured navigation rules,
you'd be best served to parse *exactly* the same configuration files that
the JSF runtime does ... that way, you don't care which of the potentially
many configuration file(s) has those definitions.  The JSF spec covers the
details of what's required in Section 10.3.2, but it boils down to
processing (in order):

* Any META-INF/faces-config.xml resources in the ServletContext resource
paths
  for this application (typically packaged inside a JAR file in
/WEB-INF/lib).

* Any configuration resources configured on the context init parameter
  "javax.faces.CONFIG_FILES".

* A resource named "/WEB-INF/faces-config.xml" (if it exists, and if it
  has not already been parsed).

On the other hand, I would also be thinking hard about my motivations for
wanting to do this kind of thing ... it seems like taking a very simple
concept (outcome-driven navigation) and trying to make it something
complicated.  Customizing this will also make it harder for tools to give
your users high quality support, because they are not going to understand
what extra "stuff" you are providing.

Craig

Re: NavigationHandler API faces.config

[Andrew Robinson <an...@gmail.com>]

I had wondered that myself for a time, as it would have made something I
wrote easier. NavigationHandler really needs to change to make it more
reusable (ability to get the settings from it instead of just that one
method.

As for the information, it will not be so easy as there is not necessarily
one faces configuration file. You can have multiple. You may for example,
have some to setup renders for example in a JSF controls bean. Therefore the
question is how to get the file that has your navigation code. The best
thing I can think of is just to have a setting in your web.config with the
location of the configuration file you wish to use.

Also be careful that if you are making a reusable component that you may
want to stick to using the jsf resolution rules (supporting wildcards for
example).

On 1/9/06, Dave <ja...@yahoo.com> wrote:
>
> Is there any way to access faces.config?
> I need to know the to-view-id(JSP page) given from-view-id and
> from-outcome. The NavigationHanlder has only one method handle(..), Thanks.
> Dave
>
> ------------------------------
> Yahoo! Photos
> Ring in the New Year with Photo Calendars<http://us.rd.yahoo.com/mail_us/taglines/photos/*http://pa.yahoo.com/*http://us.rd.yahoo.com/mail_us/taglines/photos/evt=38087/*http://pg.photos.yahoo.com/ph//page?.file=calendar_splash.html&.dir=>.
> Add photos, events, holidays, whatever.
>
>