As a learning/debug helper I am trying to catch events when components are
stored/removed from any context. org.jboss.seam.preSetVariable and the like do
pretty much what I am looking for, but I would like to set this in a more
coarse grained manner. As it is now, to use this I need to create a method for
each event and for each variable I want to catch an event on. I would like to
declare the components I want to catch events on and receive the events on the
same listener.
I could programatically add the observer when I see a component I am interested
in but when the method is called I will not know which component it is for as
there is no parameter passed to these methods.
As an example if I have the following:
| @Name( "personAction" )
| @Scope( ScopeType=PAGE )
| public class PersonAction implements Serializable
| {
| @In( scope=ScopeType.SESSION )
| Person person;
|
| ...
| }
|
And a listener something like:
| public presetVariable( Event someEvent )
| {
| log.debug( "Event variable:" + someEvent.getVariable() );
| log.debug( "Component:" + someEvent.getComponent() );
| log.debug( "Contect type:" + someEvent.getContextType() );
| }
|
If somehow, in a yet determined way, I configure this component as an Observer
for my event. I would like notification of when "personAction" and "person"
have been added to context and removed from context and which context that is.
I am not sure if there is already a means to do this, so any insight is
appreciated.
Thanks.
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