Thanks Javier. This is actually what I ended up doing after doing more research. It seems to be the best approach.
Regards, Benny On Fri, Oct 9, 2009 at 5:28 AM, Javier Molina <jav...@comunicamultimedia.com > wrote: > You might want to contribute to the registry startup and initialize things > there: > > http://tapestry.apache.org/tapestry5/tapestry-ioc/startup.html > > > Benny Law escribió: > > Thanks Ben, this looks reasonably clean to me. Unless somebody else offers >> a >> better idea, I will probably go with this approach. >> >> Benny >> >> On Wed, Oct 7, 2009 at 10:08 AM, Ben Dotte <ben.do...@gmail.com> wrote: >> >> Here's a trick we use for this. We extend TapestryFilter and override >>> init(Registry registry). Since this gets passed the created registry, >>> we then store that in a static variable on our filter and provide a >>> static getRegistry() method to retrieve it. This gets around the >>> problem that TapestryFilter stores the registry in a private instance >>> variable. To use your filter, just specify it in web.xml instead: >>> >>> <filter> >>> <filter-name>t5</filter-name> >>> <filter-class>com.whatever.MyFilter</filter-class> >>> </filter> >>> >>> This still requires that the registry has been created at the point >>> that it is requested, but at least you don't have to have access to >>> the servlet context. >>> >>> Ben >>> >>> On Wed, Oct 7, 2009 at 6:58 AM, Benny Law <benny.mk....@gmail.com> >>> wrote: >>> >>>> Thank you all for your help. This is why I need to do this: >>>> >>>> I have an immutable class called ProjectType, and it has a few >>>> predefined >>>> instances held in public static final fields (ProjectType.GD, >>>> ProjectType.TF, etc.) These instances need to be initialized with data >>>> >>> from >>> >>>> the database, so my approach was to do that inside the static >>>> >>> initializer. >>> >>>> However, I need to access the service that provides the database >>>> >>> operations, >>> >>>> and the service is registered in the IoC container. >>>> >>>> If anyone has a better idea, I will be glad to learn. I believe there >>>> are >>>> rare occasions when the registry is needed outside of normal injection, >>>> >>> so >>> >>>> having a convenient way to get to it in Tapestry would be nice, although >>>> >>> it >>> >>>> may open up opportunities for abuse. >>>> >>>> Benny Law >>>> >>>> On Wed, Oct 7, 2009 at 4:58 AM, Ben Gidley <b...@gidley.co.uk> wrote: >>>> >>>> You can get it from the servlet context - it adds it to a context >>>>> >>>> variable. >>> >>>> Registry registry = (Registry) >>>>> getServletContext().getAttribute(TapestryFilter.REGISTRY_CONTEXT_NAME); >>>>> >>>>> This shouldn't really be used inside another service as it is a bit >>>>> confusing. You may also have to make sure it doesn't get called until >>>>> tapestry-ioc has initialised via the servlet filter otherwise the >>>>> >>>> attribute >>> >>>> won't be there yet. >>>>> >>>>> Ben Gidley >>>>> >>>>> www.gidley.co.uk >>>>> b...@gidley.co.uk >>>>> >>>>> >>>>> On Wed, Oct 7, 2009 at 9:37 AM, Alfie Kirkpatrick < >>>>> alfie.kirkpatr...@ioko.com> wrote: >>>>> >>>>> You can inject ObjectLocator into a service but it doesn't sound like >>>>>> this would work for you as it's still essentially injection in the >>>>>> normal way. >>>>>> >>>>>> For webapps TapestryFilter doesn't put the registry in a static >>>>>> >>>>> anywhere >>> >>>> so there is no way to get the registry from 'outside' the dependency >>>>>> injection framework AFAIK. You could of course copy TapestryFilter, >>>>>> write your own, and put it into a static/threadlocal. >>>>>> >>>>>> Maybe you can explain why you have a static initialiser that needs the >>>>>> registry? It sounds very 'un-tapestry' ;-) >>>>>> >>>>>> Alfie. >>>>>> >>>>>> -----Original Message----- >>>>>> From: Benny Law [mailto:benny.mk....@gmail.com] >>>>>> Sent: 07 October 2009 01:34 >>>>>> To: Tapestry Users >>>>>> Subject: Accessing the T5 IoC Registry >>>>>> >>>>>> Hello, >>>>>> >>>>>> How can I obtain a service from the IoC registry inside a static >>>>>> initializer? Injection doesn't seem to work with static members, so I >>>>>> need >>>>>> to access the registry directly, or is there a better way? >>>>>> >>>>>> Thanks, >>>>>> >>>>>> Benny Law >>>>>> >>>>>> --------------------------------------------------------------------- >>>>>> To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org >>>>>> For additional commands, e-mail: users-h...@tapestry.apache.org >>>>>> >>>>>> >>>>>> --------------------------------------------------------------------- >>> To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org >>> For additional commands, e-mail: users-h...@tapestry.apache.org >>> >>> >>> >> > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org > For additional commands, e-mail: users-h...@tapestry.apache.org > >
