AbstractService getService() calling scope

Hi,

i have a few operation Participants (server side) and for reasons like maintenance and easy learning (for me and others developers) i'm trying to create global layers (i.e SCMUtils, WIUtils).

So, when i try to split those operations through diferent classes i found a problem that stopped whole work...

Today my code looks like this:

public class DefaultFolderStructureParticipant extends AbstractService implements 	IOperationParticipant {



	public void run(AdvisableOperation operation,

			IProcessConfigurationElement participantConfig,

			IParticipantInfoCollector collector, IProgressMonitor monitor)

			throws TeamRepositoryException {



		         IRepositoryItemService itemService = getService(IRepositoryItemService.class);

               itemService.doSomething()...

        }



        public void checkSomething() {

             IRepositoryItemService itemService = getService(IRepositoryItemService.class);

               itemService.doSomethingElse()...

        }

}

               ..............	

The first thing i try to do was declaring "IRepositoryItemService itemService" as an instance variable just to avoid redeclaring inside methods...

public class DefaultFolderStructureParticipant extends AbstractService implements 	IOperationParticipant {

   



            IRepositoryItemService itemService = getService(IRepositoryItemService.class);

	

             public void run(AdvisableOperation operation,

			      IProcessConfigurationElement participantConfig,

			      IParticipantInfoCollector collector, IProgressMonitor monitor)

			throws TeamRepositoryException {

		

               itemService.doSomething()...

        }



        public void checkSomething() {

               itemService.doSomethingElse()...

        }

}

This second scenario doesn't work, and the "Check <prerequisites> in plugin.xml" error appears, but my plugin.xml have all the prerequisites because the first code works.. it seems that for architectural/performance reasons, the services i need are only avaiable when the run() method is called.. not at class instantiation..

I would like to know if anyone has a suggestion/solution for this problem, such as a plugin configuration (dependencies, etc..)

tks all!