Listener

[Markus Mehrwald <mm...@gmx.at>]

Hello,

is there a Listener available which tells me when the FacesServlet is 
started? I want to put something in the application object map but if I 
use the javax.servlet.ServletContextListener it is to early and the the 
FacesContext seems not to be created by now.

Thanks,
Markus

Re: Listener

[Markus Mehrwald <mm...@gmx.at>]

Thank you very much for you help.
Yes, this is what I wanted to do. Indeed I tried to set the attribute to 
the FacesContext because I did not know that the servlet context will 
lead to the application context.
Nevertheless it is working now. Thank you again.

Markus


simon schrieb:
> Do you mean that you want code running within a request to be able to
> call
>   FacesContext
>    .getCurrentInstance()
>    .getExternalContext()
>    .getApplicationMap()
>    .get("someKey")
> and get some object that you set up at webapp startup time?
> 
> If so, then that's fairly simple. The getApplicationMap() call above
> just returns all objects that are in the standard servlet application
> scope, ie the values of
>   javax.servlet.ServletContext.getAttribute()
> 
> So just write a ServletContextListener, and call
> ServletContext.setAttribute to store your special object. It is then
> later accessable to jsf as an "application scope" value. Yes, the
> FacesContext doesn't yet exist, but that doesn't matter.
> 
> If you really do need access to the FacesContext for some reason then
> things do get trickier. Matthias' info below is one option; there are a
> couple of others solutions too.
> 
> Regards,
> Simon
> 
> 
> On Sun, 2008-08-24 at 11:49 +0200, Matthias Wessendorf wrote:
>> Even a servlet req listener is to early. Take a look at our  
>> MyFacesServlet how to decorate the FacesServlet.
>>
>> Sent from my iPod.
>>
>> Am 24.08.2008 um 01:34 schrieb Markus Mehrwald <mm...@gmx.at>:
>>
>>> Hello,
>>>
>>> is there a Listener available which tells me when the FacesServlet  
>>> is started? I want to put something in the application object map  
>>> but if I use the javax.servlet.ServletContextListener it is to early  
>>> and the the FacesContext seems not to be created by now.
>>>
>>> Thanks,
>>> Markus
> 

Re: Listener

[simon <sk...@apache.org>]

Do you mean that you want code running within a request to be able to
call
  FacesContext
   .getCurrentInstance()
   .getExternalContext()
   .getApplicationMap()
   .get("someKey")
and get some object that you set up at webapp startup time?

If so, then that's fairly simple. The getApplicationMap() call above
just returns all objects that are in the standard servlet application
scope, ie the values of
  javax.servlet.ServletContext.getAttribute()

So just write a ServletContextListener, and call
ServletContext.setAttribute to store your special object. It is then
later accessable to jsf as an "application scope" value. Yes, the
FacesContext doesn't yet exist, but that doesn't matter.

If you really do need access to the FacesContext for some reason then
things do get trickier. Matthias' info below is one option; there are a
couple of others solutions too.

Regards,
Simon


On Sun, 2008-08-24 at 11:49 +0200, Matthias Wessendorf wrote:
> Even a servlet req listener is to early. Take a look at our  
> MyFacesServlet how to decorate the FacesServlet.
> 
> Sent from my iPod.
> 
> Am 24.08.2008 um 01:34 schrieb Markus Mehrwald <mm...@gmx.at>:
> 
> > Hello,
> >
> > is there a Listener available which tells me when the FacesServlet  
> > is started? I want to put something in the application object map  
> > but if I use the javax.servlet.ServletContextListener it is to early  
> > and the the FacesContext seems not to be created by now.
> >
> > Thanks,
> > Markus

Re: Listener

[Matthias Wessendorf <mw...@gmail.com>]

Even a servlet req listener is to early. Take a look at our  
MyFacesServlet how to decorate the FacesServlet.

Sent from my iPod.

Am 24.08.2008 um 01:34 schrieb Markus Mehrwald <mm...@gmx.at>:

> Hello,
>
> is there a Listener available which tells me when the FacesServlet  
> is started? I want to put something in the application object map  
> but if I use the javax.servlet.ServletContextListener it is to early  
> and the the FacesContext seems not to be created by now.
>
> Thanks,
> Markus

Re: Listener

[Justinas <ta...@gmail.com>]

Markus Mehrwald wrote:
> Hello,
Hi
>
> is there a Listener available which tells me when the FacesServlet is 
> started? I want to put something in the application object map but if 
> I use the javax.servlet.ServletContextListener it is to early and the 
> the FacesContext seems not to be created by now.
try to use PhaseListener
here is pretty example: 
http://www.jsftutorials.net/faces-config/phaseTracker.html
>
> Thanks,
> Markus
>

Justinas