From 6c25c9893d0d936571e0f610207d28a7c9632748 Mon Sep 17 00:00:00 2001
From: ass92 <ass92@440791e1-c2bf-4c1e-ad7c-caf3f8b0ebe8>
Date: Fri, 14 Jan 2011 15:23:14 +0000
Subject: [PATCH] NIHVIVO-1657 improvement on 'subtract models' ingest tool

---
 .../vitro/webapp/controller/jena/JenaIngestController.java   | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/webapp/src/edu/cornell/mannlib/vitro/webapp/controller/jena/JenaIngestController.java b/webapp/src/edu/cornell/mannlib/vitro/webapp/controller/jena/JenaIngestController.java
index f60aaea3e..91a5c51a6 100644
--- a/webapp/src/edu/cornell/mannlib/vitro/webapp/controller/jena/JenaIngestController.java
+++ b/webapp/src/edu/cornell/mannlib/vitro/webapp/controller/jena/JenaIngestController.java
@@ -959,7 +959,10 @@ public class JenaIngestController extends BaseEditController {
 			Model ma = getModel(modela,vreq);
 			Model mb = getModel(modelb,vreq);
 			Model destinationModel = getModel(destination,vreq);
-			destinationModel.add(ma.difference(mb));
+			if(!destination.equals(modela))
+			    destinationModel.add(ma.difference(mb));
+			else
+				ma.remove(mb);
 	}
 	
 	public void doSplitPropertyValues(VitroRequest vreq) {