- Create a command on the command stack only if necessary (i.e., prevent...

- Create a command on the command stack only if necessary (i.e., prevent models from being marked as dirty although they have not been modified)
refs 2691

org.fortiss.tooling.kernel/trunk/src/org/fortiss/tooling/kernel/internal/storage/eclipse/EclipseResourceStorageService.java

@@ -78,7 +78,7 @@ import org.osgi.framework.Bundle;
  * @author hoelzl
  * @author $Author$
  * @version $Rev$
- * @ConQAT.Rating YELLOW Hash: F4AF7597DFB9BFFDFE70D6F3BB6AD8EE
+ * @ConQAT.Rating YELLOW Hash: D0BD6E6360A96906F01AC8A26BD13C1B
  */
 public class EclipseResourceStorageService implements IEclipseResourceStorageService,
 		IResourceChangeListener, IResourceDeltaVisitor, IStorageProvider,
@@ -238,21 +238,23 @@ public class EclipseResourceStorageService implements IEclipseResourceStorageSer
 								}
 							}
 
-							// Remove resource(s) corresponding to the removed file
-							topLevelElement.runAsCommand(new Runnable() {
-								@Override
-								public void run() {
-									for(Resource resource : toRemove) {
-										List<EObject> contents = new ArrayList<EObject>();
-										contents.addAll(resource.getContents());
-										for(EObject obj : contents) {
-											EcoreUtil.delete(obj);
+							// If required, remove resource(s) corresponding to the removed file
+							if(!toRemove.isEmpty()) {
+								topLevelElement.runAsCommand(new Runnable() {
+									@Override
+									public void run() {
+										for(Resource resource : toRemove) {
+											List<EObject> contents = new ArrayList<EObject>();
+											contents.addAll(resource.getContents());
+											for(EObject obj : contents) {
+												EcoreUtil.delete(obj);
+											}
+											resource.unload();
+											resourceSet.getResources().remove(resource);
 										}
-										resource.unload();
-										resourceSet.getResources().remove(resource);
 									}
-								}
-							});
+								});
+							}
 						}
 					}
 				}