From 8276d85bf9fad2f271a26452cb46f4f8703173ab Mon Sep 17 00:00:00 2001
From: lempinen <lempinen@ac1ea38d-2e2b-0410-8846-a27921b304fc>
Date: Thu, 11 Oct 2012 06:38:02 +0000
Subject: [PATCH] Changed RelatedOrderedSetElementsAccessor to return an empty
 list if the Element has no statements (i.e. it has been removed). (fixes
 #3771)

git-svn-id: https://www.simantics.org/svn/simantics/sysdyn/trunk@25977 ac1ea38d-2e2b-0410-8846-a27921b304fc
---
 .../rules/domain/RelatedOrderedSetElementsAccessor.java     | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/org.simantics.objmap/src/org/simantics/objmap/rules/domain/RelatedOrderedSetElementsAccessor.java b/org.simantics.objmap/src/org/simantics/objmap/rules/domain/RelatedOrderedSetElementsAccessor.java
index a92d2d27..35c5e3f8 100644
--- a/org.simantics.objmap/src/org/simantics/objmap/rules/domain/RelatedOrderedSetElementsAccessor.java
+++ b/org.simantics.objmap/src/org/simantics/objmap/rules/domain/RelatedOrderedSetElementsAccessor.java
@@ -12,6 +12,7 @@
 package org.simantics.objmap.rules.domain;
 
 import java.util.Collection;
+import java.util.Collections;
 
 import org.apache.log4j.Logger;
 import org.simantics.db.ReadGraph;
@@ -40,7 +41,10 @@ public class RelatedOrderedSetElementsAccessor implements IDomainAccessor<Collec
 	public Collection<Resource> get(ReadGraph g, Resource element) throws MappingException {
 		try {
 		    LOGGER.info("        RelatedOrderedSetElementsAccessor.get");
-			return OrderedSetUtils.toList(g, element);
+		    if(g.hasStatement(element))
+		        return OrderedSetUtils.toList(g, element);
+		    else
+		        return Collections.emptyList();
 		} catch (DatabaseException e) {
 			throw new MappingException(e);
 		}
-- 
2.47.1