using ${resource} in a separated thread?

I want to perform a simple task ! but dont know if it is possible or not!

I have a groovy class which implements Runnable and it has been running using an ThreadPool! what I want to do in my Runnable class is the following:

    public void run() {
          EventPhoto.withTransaction { status ->

                EventPhoto photo = new EventPhoto(event:eventInstance)

                photo.imageUrl = "${resource(dir:'images/uploads',file:image.name, absolute:true)}"
                photo.thumbnailUrl = "${resource(dir:'images/uploads',file:thumb.name, absolute:true)}"
          }
    }

The thing is, as my thread is not running inside the webrequest I am getting the following error:

java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originall开发者_运维百科y receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet/DispatcherPortlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request.

So Is there anyway to still use $resource() ??

thanks

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Here is some information that will show you how to accomplish what you are trying to do. Also note that it advises that what you are doing is bad design.

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Your background thread does not, by default, have access to the Hibernate session used to persist your Photo. You can use a plugin like Executor to save domain objects in a background thread.