From 81733d305d8b6bf5e5b4f808317a826df8104cea Mon Sep 17 00:00:00 2001
From: Jim Blake <jeb228@cornell.edu>
Date: Fri, 13 Jun 2014 10:24:21 -0400
Subject: [PATCH] VIVO-773 Add a Context to RDFServiceDatasetGraph.

Every attempt at SPARQL Update fails because RDFServiceDatasetGraph.getContext() returns null.
I see that DatasetGraphBase just creates an empty Context on instantiation, so now RDFServiceDatasetGraph
does the same, and the problem goes away.
---
 .../vitro/webapp/dao/jena/RDFServiceDatasetGraph.java        | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/webapp/src/edu/cornell/mannlib/vitro/webapp/dao/jena/RDFServiceDatasetGraph.java b/webapp/src/edu/cornell/mannlib/vitro/webapp/dao/jena/RDFServiceDatasetGraph.java
index 6ed046a0d..d0f477651 100644
--- a/webapp/src/edu/cornell/mannlib/vitro/webapp/dao/jena/RDFServiceDatasetGraph.java
+++ b/webapp/src/edu/cornell/mannlib/vitro/webapp/dao/jena/RDFServiceDatasetGraph.java
@@ -28,7 +28,8 @@ public class RDFServiceDatasetGraph implements DatasetGraph {
 
     private RDFService rdfService;
     private Lock lock = new LockMRSW();
-    
+    private Context context = new Context() ;
+
     public RDFServiceDatasetGraph(RDFService rdfService) {
         this.rdfService = rdfService;
     }
@@ -163,7 +164,7 @@ public class RDFServiceDatasetGraph implements DatasetGraph {
 
     @Override
     public Context getContext() {
-        return null;
+        return context;
     }
 
     @Override