this may be what you're looking for
ActionContext context = ActionContext.getContext();then use
context.getApplication()
to acquire your Map
http://www.opensymphony.com/webwork/api/com/opensymphony/xwork/ActionContext.html#getApplication()
and to acquire specific keyed value try get(DATABASE_KEY);
Saludos /
Martin
______________________________________________
Disclaimer and confidentiality note
Everything in this e-mail and any attachments relates to the official business
of Sender. This transmission is of a confidential nature and Sender does not
endorse distribution to any party other than intended recipient. Sender does
not necessarily endorse content contained within this transmission.
> Date: Thu, 25 Sep 2008 22:37:05 -0300
> Subject: Re: ApplicationListener issue
> From: [EMAIL PROTECTED]
> To: user@struts.apache.org
> CC: user@struts.apache.org
>
>
>
> Hi RDB,
>
>
>
> Thanks for your answer. I think I'm doing it OK though, let me paste here the
> code of my app:
>
>
>
> import java.util.Map;
>
>
>
> import org.apache.log4j.Logger;
>
> import org.apache.struts2.interceptor.ApplicationAware;
>
>
>
> import database.DBConnector;
>
>
>
> import com.opensymphony.xwork2.ActionSupport;
>
>
>
> public class MyAction extends ActionSupport implements ApplicationAware {
>
>
>
> private static Logger logger =
> Logger.getLogger(MyAction.class);
>
>
>
> private Map application;
>
>
>
>
>
> public void setApplication(Map value) {
>
> application = value;
>
> }
>
>
>
> public static final String DATABASE_KEY =
> "database";
>
>
>
>
>
> public DBConnector getDatabase() {
>
> Map application = getApplication();
>
>
>
> if(application == null) {
>
> logger.error("null
> application context");
>
> return
> null;
>
> }
>
> return
> application.get(DATABASE_KEY);
>
> }
>
>
>
> /**
>
> * <p>Provide application context.</p>
>
> */
>
> public Map getApplication() {
>
> return application;
>
> }
>
> }
>
>
>
> This is the Action and the getApplication call is giving me a null application
> object, what am I doing wrong?
>
>
>
> Thank you,
>
>
>
> Martin
>
>
>
>
>
>
>
> > Not knowing the whole story, I may be off target... However, your code
>
> > below is suspect to me:
>
> >
>
> > public class MyAction extends ActionSupport implements ApplicationAware {
>
> >
>
> > public DBConnector getDatabase() {
>
> >
>
> > Map application = getApplication();
>
> >
>
> > Object db = application.get(DATABASE_KEY);
>
> >
>
> > ....
>
> >
>
> > }
>
> >
>
> > At the top of the class you should have a variable declared called:
>
> >
>
> > private Map application;
>
> >
>
> > You need to implement/override setApplication(...), like so:
>
> >
>
> > public void setApplication(Map map) {
>
> > this.application = map;
>
> > }
>
> >
>
> > When struts enters your class it will set the application variable for
>
> > you. Then inside your method above, you can dispense with:
>
> >
>
> > Map application = getApplication();
>
> >
>
> > As Laurie suggested, make sure you have (1) correct.
>
> >
>
> > If I'm missing the point, ignore my email.
>
> >
>
> > RDB
>
> >
>
> >
>
> > Martín Mauri wrote:
>
> >> Hi Laurie, I've checked all the points that you suggested, and I
>
> >> think that #3 could be a possibility. The thing is that the
>
> >> database object is not null when I do the
>
> >> context.setAttribute(DATABASE_KEY, database); But in the Action
>
> >> that implements the ApplicationAware interface I did the following:
>
> >> Inside the method that gets invoked I did: Map application =
>
> >> getApplication(); and it turned out to be that the application
>
> >> object is null. Am I missing something in the configuration files?
>
> >> Is it required to do an interceptor to transfer this object from
>
> >> the Application Listener to my Action class?
>
> >>
>
> >> I'll appreciate your help,
>
> >>
>
> >> Thank you. Martin
>
> >>
>
> >> ----- Original Message ----- From: "Laurie Harper"
>
> >> <[EMAIL PROTECTED]> To: <user@struts.apache.org> Sent:
> Thursday,
>
> >> September 25, 2008 4:45 AM Subject: Re: ApplicationListener issue
>
> >>
>
> >>
>
> >> Martín Mauri wrote:
>
> >>> Hi all, I'm having an issue while implementing an App Listener
>
> >>> for my App. Thing is that the ApplicationListener appears to be
>
> >>> working fine, as from the logs I can see that the
>
> >>> contextInitialized method is being invoked.
>
> >>>
>
> >>> Inside the method I do this call, same way as the Mailreader
>
> >>> sample app does:
>
> >>>
>
> >>> context.setAttribute(DATABASE_KEY, database); The problem comes
>
> >>> when from my action:
>
> >>>
>
> >>> public class MyAction extends ActionSupport implements
>
> >>> ApplicationAware {
>
> >>>
>
> >>> public DBConnector getDatabase() {
>
> >>>
>
> >>> Map application = getApplication();
>
> >>>
>
> >>> Object db = application.get(DATABASE_KEY);
>
> >>>
>
> >>> ....
>
> >>>
>
> >>> }
>
> >>>
>
> >>> db is returning null, like if the object got lost somewhere...
>
> >>>
>
> >>> here's the fragmen of my web.xml:
>
> >>>
>
> >>> <listener>
>
> >>>
>
> >>> <listener-class>
>
> >>>
>
> >>> myApp.ApplicationListener
>
> >>>
>
> >>> </listener-class>
>
> >>>
>
> >>> </listener>
>
> >>>
>
> >>> Any ideas?
>
> >>
>
> >> 1) there's something wrong in your implementation of
>
> >> ApplicationAware and/or your getApplication() method
>
> >>
>
> >> 2) the 'database' variable was null when you called setAttribute()
>
> >> in your listener
>
> >>
>
> >> 3) you have code somewhere which is overwriting the
>
> >> application-scope property with a null value after the listener
>
> >> initializes it
>
> >>
>
> >> 4) the value of DATABASE_KEY is different in the listener and the
>
> >> action
>
> >>
>
> >> Those are the most obvious places to start. In fact, I can't think
>
> >> of anything else it could be unless there's something very funky
>
> >> going on, in which case I doubt it can be diagnosed through a
>
> >> mailing list...
>
> >>
>
> >> L.
>
> >>
>
> >>
>
> >> ---------------------------------------------------------------------
>
> >> To unsubscribe, e-mail: [EMAIL PROTECTED] For
>
> >> additional commands, e-mail: [EMAIL PROTECTED]
>
> >>
>
> >>
>
> >> __________ Información de NOD32, revisión 3469
> (20080924)
>
> >> __________
>
> >>
>
> >> Este mensaje ha sido analizado con NOD32 antivirus system
>
> >> http://www.nod32.com
>
> >>
>
> >>
>
> >>
>
> >> ---------------------------------------------------------------------
>
> >> To unsubscribe, e-mail: [EMAIL PROTECTED] For
>
> >> additional commands, e-mail: [EMAIL PROTECTED]
>
> >>
>
> >>
>
> >
>
> >
>
> >
>
> > ---------------------------------------------------------------------
>
> > To unsubscribe, e-mail: [EMAIL PROTECTED]
>
> > For additional commands, e-mail: [EMAIL PROTECTED]
>
> >
>
> >
>
_________________________________________________________________
See how Windows connects the people, information, and fun that are part of your
life.
http://clk.atdmt.com/MRT/go/msnnkwxp1020093175mrt/direct/01/
