StreamScope and the console

[Susan Cline]

Hi,

I’m trying to do the following:

If a user creates an application using a DevelopmentProvider display the tuples 
in a hover that are flowing through a StreamScope oplet.

I’ve created a servlet that accepts requests when a user hovers over a 
StreamScope oplet and I can get an instance of a StreamScopeMXBean.
But even though I call setEnabled(true) on the StreamScopeMXBean I never get 
any ‘samples’ when I call StreamScopeMXBean.getSamples().

Here is the simple code in the servlet:

                        StreamScopeMXBean sScopeBean = 
StreamScopeUtil.getStreamScope(jobId, opletId, Integer.parseInt(outputPort));
                        if (sScopeBean != null) {                       
                                sScopeBean.setEnabled(true);
                                System.out.println("is streamScopeMXBean 
enabled? " + sScopeBean.isEnabled());
        
                                String sampleScope = sScopeBean.getSamples();
                                System.out.println("sampleScope: " + 
sampleScope);
                                Gson gson = new Gson();
                                response.setContentType("application/json");
                                response.setCharacterEncoding("UTF-8");
                                
response.getWriter().write(gson.toJson(sampleScope));
                        }

The output to the command line is:

is streamScopeMXBean enabled? true
sampleScope: []

What am I missing?  I think that if a DevelopmentProvider is used StreamScope 
oplets are inserted into the graph, and I should not have to do anything else 
to get the sample?

Thanks,

Susan