A Filter is passed a FilterConfig object where you can call
getServletContext() and get the ServletContext. So the availability
shouldn't be a problem. I rather believe that it doesn't get set in
ApplicationGlobals until a certain point which is after building the
SymbolSource...
Uli
Am Mo, 22.09.2008, 16:01, schrieb Peter Stavrinides:
> Just a wild guess, but it sounds like an 'order of things' type problem,
> Tapestry being a filter and not essentially a servlet, the context might
> not be available at that point.
>
> ----- Original Message -----
> From: "Ulrich Stärk" <[EMAIL PROTECTED]>
> To: "Tapestry users" <users@tapestry.apache.org>
> Sent: Monday, 22 September, 2008 4:51:23 PM GMT +02:00 Athens, Beirut,
> Bucharest, Istanbul
> Subject: NPE when trying to contribute ServletContextSymbolProvider to
> SymbolSource (WAS: Re: Page pool hard limit and page instance usage)
>
> The problem seems to be, that the ServletContext provided by
> ApplicationGlobals is null when Tapestry tries to contribute the
> ServletContextSymbolProvider to the SymbolSource service. I don't know why
> this is the case. Maybe someone else can shed some light on this.
>
> Uli
>
> Am Mo, 22.09.2008, 08:08, schrieb 9902468:
>>
>> Hi again,
>>
>> I'm hitting my head to wall here with ServletContextSymbolProvider. It
>> is
>> configured like this:
>>
>> public static void
>> contributeSymbolSource(OrderedConfiguration<SymbolProvider>
>> configuration,
>> @InjectService("ServletContextSymbolProvider") SymbolProvider
>> servletContextSymbolProvider)
>> {
>> configuration.add("ServletContextSymbolProvider" ,
>> servletContextSymbolProvider, "after:SystemProperties",
>> "before:ApplicationDefaults");
>> }
>>
>> public static ServletContextSymbolProvider
>> buildServletContextSymbolProvider(ApplicationGlobals globals){
>> return new
>> ServletContextSymbolProvider(globals.getServletContext());
>> }
>>
>> And it always ends to this error:
>> java.lang.RuntimeException: Unable to instantiate class
>> org.apache.tapestry5.services.TapestryModule as a module builder:
>> Exception
>> constructing service 'Alias': Error invoking service builder method
>> org.apache.tapestry5.services.TapestryModule.buildAlias(Logger, String,
>> AliasManager, Collection) (at TapestryModule.java:217) (for service
>> 'Alias'): Exception constructing service 'SymbolSource': Error invoking
>> constructor
>> o
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