RE: DEPLOYMENT

Hi Rana,

When you deploy a Component description you can deploy a new Application or a new Child. When deploying a new Application, the parent parameter is null.

Now, to deploy a new Application you can use directly the method:
---
sfCreateNewApp (String name, ComponentDescription cmp,Context parms)

Parameters: 
name - name for the new application
cmp - compiled component to deploy and start
parms - parameters for description
---

When using this method you only need to pass a NAME and a valid COMPONENTDescription. "parms" will be null most of the time.

Please, just to understand how the method works, try to deploy a very simple component description with a standard component like Prim or Compound. 

To do this you could for example do:
---
ComponentDescription cd;

cd = ComponentDescription.sfComponentDescription("/org/smartfrog/examples/pong/singlePlayer.sf");

//Inside a Compound
this.sfCreateNewApp("testingPong",cd,null);
---

I have the suspicion that the null pointer is being thrown inside your new component and not in the create/deploy methods. Have you tested your component using a normal description?

Please, if this does not work for you, could you send a short example that we could comment on?

Julio Guijarro


> -----Original Message-----
> From: smartfrog-developer-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org [mailto:smartfrog-
> developer-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org] On Behalf Of Sabharwal, Ritu (STSD)
> Sent: 29 April 2005 12:57
> To: rana dabbu
> Cc: smartfrog-developer-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
> Subject: Re: [Smartfrog-developer] DEPLOYMENT
> 
> Hello Rana,
> 
> As I mentioned in my earlier mail, the parent parameter has to be some
> compound component (itself or some other compound) or some
> processcompound (local or remote rootProcess). In each case, call
> sfDeployComponentDescription() with the appropriate component as parent
> paremeter from sfStart(). Parent parameter points to the component/host
> where you want this component to get deployed so it cannot be null.
> 
> Also, as Julio mentioned please check the similar thread in the lists
> archive:
> 
> http://news.gmane.org/gmane.comp.java.smartfrog.user/cutoff=72
> 
> Title: "Component Deployment."
> 
> Thanks,
> Ritu.
> 
> rana dabbu wrote:
> 
> >hello ,
> >
> >              As per instructions I have tried the following
> >- i have a class extending Compound and used both sfCreateNewApp and
> >sfDeployComponent description( by setting parent to NULL and context
> >obtained by the sfContext() on my description).
> >I am getting Nullpointer and Deployment exception.
> >
> >regards,
> >Rana
> >
> >
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> 
> 
> 
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Take this survey and enter to win a one-year sub to SourceForge.net
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