How to use ServerApplicationContext to do a remote query across multiple entities

Question

Hello everybody,
My data model is like this:
"Case" -> one-to-many -> "Document"
Document has  the fields:
- "IsFinalised" (boolean)
-  File (large binary)
My business rule is: 'a Case is closed if all its documents are finalised'.
I am trying to do a query which returns whether a case is closed using ServerApplicationContext, but I don't want the query to load the large binaries for each Document into memory for given case.
Does this do the job?
int IsCaseClosed(int caseId)
using (var sac = ServerApplicationContext.CreateContext())
var relevantCase = sac.DataWorkspaces.ApplicationData.Cases.FirstOrDefault(c => c.Id = caseId);
return relevantCase.Documents.All(d => d.IsFinalised);

Answer 1

I think what you have is pretty close.  I would probably write it like this:
bool IsCaseClosed(int caseId)
bool isClosed = false;
if caseId > 0
using (var sac = ServerApplicationContext.Current ?? ServerApplicationContext.CreateContext())
isClosed = sac.DataWorkspace.ApplicationData.Cases_Single(caseId).Documents.All(d => d.IsFinalised);
return isClosed;