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.
>
>
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