Implementing a service layer to call gateways and DAOs

I am using CF11. In addition to the Datasource component, I created a package of four components ( 1 x Bean, 1 x DAO, 1 x Gateway, 1 x Service) that deals with grapes...

The datasource object and the service object have been persisted in Application.cfc as follows:

<cffunctionname="onApplicationStart"output="false">

  <!--- Instantiate the Datasource object --->

  <cfsetvarobjDatasource = createObject ('component','components.beans.Datasource').init(

  DSName='dns', username='abc',

  password='pass') />

  <!--- Instantiate and persist the Grape service in the application scope  --->

  <cfsetApplication.GrapeSVC = createObject('component','components.dataAccess.GrapeSVC').init(

  datasource = objDatasource) />

</cffunction>

The service object (GrapeSVC.cfc) acts as a façade pattern to the other inner components: a Bean (Grape.cfc), a DAO (GrapeDAO.cfc) and a Gateway (GrapesGW.cfc).

Now, I have below a CFM template that instantiates the above service object (GrapeSVC) to simply call a method - getAllGrapes() from the gateway - that lists all the grapes in the database:

ListGrapes.cfm

<!--- Instantiate the Datasource object --->

  <cfsetobjDatasource = createObject ('component','components.beans.Datasource').init(

  DSName='dns', username='abc',

  password='pass') />

  <!--- Instantiate the Grape service object and pass in the datasource object --->

  <cfsetobjGrapeSVC = createObject('component','components.dataAccess.GrapeSVC').init(

  datasource = objDatasource) />

  <!--- Pull out all grapes from the database --->

  <cfsetqResults = objGrapeSVC.getAllGrapes() /> 

    <!--- Dump the results --->

    <cfdumpvar="#qResults#"label="getAllGrapes results" />

The code above works fine as long as I keep instantiating the datasource object within the above CFM template. If I take it out, the code breaks. This does not make sense to me since I have already persisted the datasource object in Application.cfc above and mostly because the objective is to avoid repeats. My question therefore is:

What is wrong in the above approach and is there a way to NOT re-instantiate the datasource object in every CFM template?