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Posted to users@myfaces.apache.org by David Brunette <Da...@chordiant.com> on 2007/08/31 17:25:48 UTC
Checking for navigation rule
Hi everybody.
Is there an easy way for an action method to check for the
existence of a navigation rule before returning the outcome String? I
know that the normal functionality is that, if you return an outcome
that does not match to an existing navigation rule, the same view will
be shown again. But I'd like to check for that nav rule before
returning from the action method so I can go do something else instead
of just showing the same page again.
I've done something like the following, but this doesn't seem to be
the most efficient since I'd be creating the ViewRoot once in
handleNavigation() and then again when I return the outcome.
public String actionMethod() {
String outcome = "someOutcome";
UIViewRoot oldView = facesContext.getViewRoot();
facesContext.getApplication().getNavigationHandler().handleNavigation(
facesContext, null, outcome );
if( facesContext.getViewRoot() == oldRoot ) {
// No nav rule found, do something else...
outcome = getOutcomeFromElsewhere();
}
return outcome;
}
Any alternatives? Thanks...
Dave
The information transmitted herewith is sensitive information of Chordiant Software or its customers and is intended only for use to the individual or entity to which it is addressed. If the reader of this message is not the intended recipient, you are hereby notified that any review, retransmission, dissemination, distribution, copying or other use of, or taking of any action in reliance upon, this information is strictly prohibited. If you have received this communication in error, please contact the sender and delete the material from your computer.
Re: Checking for navigation rule
Posted by Andrew Robinson <an...@gmail.com>.
Even though you would have to cast it, I believe these methods are now
public on the NavigationHandlerImpl of myfaces
On 8/31/07, David Brunette <Da...@chordiant.com> wrote:
>
>
>
>
>
>
> Hi everybody.
>
>
>
> Is there an easy way for an action method to check for the existence of
> a navigation rule before returning the outcome String? I know that the
> normal functionality is that, if you return an outcome that does not match
> to an existing navigation rule, the same view will be shown again. But I'd
> like to check for that nav rule before returning from the action method so I
> can go do something else instead of just showing the same page again.
>
>
>
> I've done something like the following, but this doesn't seem to be the
> most efficient since I'd be creating the ViewRoot once in handleNavigation()
> and then again when I return the outcome.
>
>
>
> public String actionMethod() {
>
> String outcome = "someOutcome";
>
> UIViewRoot oldView = facesContext.getViewRoot();
>
>
> facesContext.getApplication().getNavigationHandler().handleNavigation(
> facesContext, null, outcome );
>
> if( facesContext.getViewRoot() == oldRoot ) {
>
> // No nav rule found, do something else…
>
> outcome = getOutcomeFromElsewhere();
>
> }
>
> return outcome;
>
> }
>
>
>
> Any alternatives? Thanks…
>
>
>
> Dave
> The information transmitted herewith is sensitive information of Chordiant
> Software or its customers and is intended only for use to the individual or
> entity to which it is addressed. If the reader of this message is not the
> intended recipient, you are hereby notified that any review, retransmission,
> dissemination, distribution, copying or other use of, or taking of any
> action in reliance upon, this information is strictly prohibited. If you
> have received this communication in error, please contact the sender and
> delete the material from your computer.
RE: Checking for navigation rule
Posted by David Brunette <Da...@chordiant.com>.
It seems as though I'd be looking at having my own extended
NavigationHandler. I was hoping to avoid that... didn't know if there
was something else out there that I was just missing.
Thanks guys.
Dave
-----Original Message-----
From: Mike Kienenberger [mailto:mkienenb@gmail.com]
Sent: Friday, August 31, 2007 11:31 AM
To: MyFaces Discussion
Subject: Re: Checking for navigation rule
This is complete guesswork, but what about extending navigationHandler
and installing a custom navigation handler? You could then make the
default behavior of your navigation handler to get outcomes from
somewhere else, perhaps by setting
navigationHandler.setFallBackOutcomeCallback(Method method), or
perhaps caching the ViewRoot if you query for whether there's an
outcome and reusing it on the "real" invocation.
On 8/31/07, David Brunette <Da...@chordiant.com> wrote:
>
>
>
>
>
>
> Hi everybody.
>
>
>
> Is there an easy way for an action method to check for the
existence of
> a navigation rule before returning the outcome String? I know that
the
> normal functionality is that, if you return an outcome that does not
match
> to an existing navigation rule, the same view will be shown again.
But I'd
> like to check for that nav rule before returning from the action
method so I
> can go do something else instead of just showing the same page again.
>
>
>
> I've done something like the following, but this doesn't seem to
be the
> most efficient since I'd be creating the ViewRoot once in
handleNavigation()
> and then again when I return the outcome.
>
>
>
> public String actionMethod() {
>
> String outcome = "someOutcome";
>
> UIViewRoot oldView = facesContext.getViewRoot();
>
>
> facesContext.getApplication().getNavigationHandler().handleNavigation(
> facesContext, null, outcome );
>
> if( facesContext.getViewRoot() == oldRoot ) {
>
> // No nav rule found, do something else...
>
> outcome = getOutcomeFromElsewhere();
>
> }
>
> return outcome;
>
> }
>
>
>
> Any alternatives? Thanks...
>
>
>
> Dave
> The information transmitted herewith is sensitive information of
Chordiant
> Software or its customers and is intended only for use to the
individual or
> entity to which it is addressed. If the reader of this message is not
the
> intended recipient, you are hereby notified that any review,
retransmission,
> dissemination, distribution, copying or other use of, or taking of any
> action in reliance upon, this information is strictly prohibited. If
you
> have received this communication in error, please contact the sender
and
> delete the material from your computer.
The information transmitted herewith is sensitive information of Chordiant Software or its customers and is intended only for use to the individual or entity to which it is addressed. If the reader of this message is not the intended recipient, you are hereby notified that any review, retransmission, dissemination, distribution, copying or other use of, or taking of any action in reliance upon, this information is strictly prohibited. If you have received this communication in error, please contact the sender and delete the material from your computer.
Re: Checking for navigation rule
Posted by Mike Kienenberger <mk...@gmail.com>.
This is complete guesswork, but what about extending navigationHandler
and installing a custom navigation handler? You could then make the
default behavior of your navigation handler to get outcomes from
somewhere else, perhaps by setting
navigationHandler.setFallBackOutcomeCallback(Method method), or
perhaps caching the ViewRoot if you query for whether there's an
outcome and reusing it on the "real" invocation.
On 8/31/07, David Brunette <Da...@chordiant.com> wrote:
>
>
>
>
>
>
> Hi everybody.
>
>
>
> Is there an easy way for an action method to check for the existence of
> a navigation rule before returning the outcome String? I know that the
> normal functionality is that, if you return an outcome that does not match
> to an existing navigation rule, the same view will be shown again. But I'd
> like to check for that nav rule before returning from the action method so I
> can go do something else instead of just showing the same page again.
>
>
>
> I've done something like the following, but this doesn't seem to be the
> most efficient since I'd be creating the ViewRoot once in handleNavigation()
> and then again when I return the outcome.
>
>
>
> public String actionMethod() {
>
> String outcome = "someOutcome";
>
> UIViewRoot oldView = facesContext.getViewRoot();
>
>
> facesContext.getApplication().getNavigationHandler().handleNavigation(
> facesContext, null, outcome );
>
> if( facesContext.getViewRoot() == oldRoot ) {
>
> // No nav rule found, do something else…
>
> outcome = getOutcomeFromElsewhere();
>
> }
>
> return outcome;
>
> }
>
>
>
> Any alternatives? Thanks…
>
>
>
> Dave
> The information transmitted herewith is sensitive information of Chordiant
> Software or its customers and is intended only for use to the individual or
> entity to which it is addressed. If the reader of this message is not the
> intended recipient, you are hereby notified that any review, retransmission,
> dissemination, distribution, copying or other use of, or taking of any
> action in reliance upon, this information is strictly prohibited. If you
> have received this communication in error, please contact the sender and
> delete the material from your computer.