PhaseListener

[Mike Duffy <md...@yahoo.com>]

Is it possible to implement a PhaseListener on a backing bean?  I tried to do this but could not
get it to work.

I'd like to be able to trace the phases as a page loads.  Is there some standard way to know what
phase of the component life cycle has been activated?

Thx.

Mike

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Re: PhaseListener

[Simon Kitching <sk...@apache.org>]

On Wed, 2006-01-18 at 10:04 -0800, Mike Duffy wrote:
> Is it possible to implement a PhaseListener on a backing bean?  I tried to do this but could not
> get it to work.
> 
> I'd like to be able to trace the phases as a page loads.  Is there some standard way to know what
> phase of the component life cycle has been activated?
> 

I do this by implementing an independent class as the phase listener.
When a phase callback occurs, it stores the current phase in a static
ThreadLocal variable. A single HTTP request is always serviced in a
single thread, so this works nicely. A static method is then provided
for any code that wants to query the current phase (for the current
thread):
  String phaseId = PhaseTracker.getCurrentPhase();

Regards,

Simon

Re: PhaseListener

[Aleksei Valikov <va...@gmx.net>]

Hi.

> Is it possible to implement a PhaseListener on a backing bean?  I tried to do this but could not
> get it to work.
> 
> I'd like to be able to trace the phases as a page loads.  Is there some standard way to know what
> phase of the component life cycle has been activated?

What I did was implementing a small PhaseListener which dispatches phase 
events among session attributes. Works fine for me. I simply implement 
PhaseListener in my session-scoped bean and it gets notified about 
phases. The same could be done for page and application context, I only 
needed that for the session context.

Source code attached.

Bye.
/lexi