next try to fix change detection

jastadd-mquat-eris/src/main/java/de/tudresden/inf/st/mquat/eris/coupling/ERISConnector.java

@@ -369,6 +369,8 @@ public class ERISConnector {
         logger.debug("        -> algorithm '1' says config has changed for living partition {}: {}", livingPartition, configHasChanged);
 
         // figure out if the config has changed by comparing the new and old config by access path and attributes
+
+        // check if all new configs are in oldconfig
         configHasChanged = false;
         outer:
         for (ERISLPConfiguration newConfig : configsToUse) {
@@ -380,6 +382,30 @@ public class ERISConnector {
           configHasChanged = true;
           break;
         }
+        if (!configHasChanged) {
+          outer:
+          for (ERISLPConfiguration oldConfig : livingPartition.getConfigurations()) {
+            // skip default ap
+            if (oldConfig.getAttributesAndKeys().isEmpty()) continue;
+
+            // if the old config contains only linkage attributes, continue
+            boolean linkageOnly = true;
+            for (ERISAttribute attribute : oldConfig.getAttributesAndKeys()) {
+              if (!attribute.isLinkage()) {
+                linkageOnly = false;
+              }
+            }
+            if (linkageOnly) continue;
+
+            for (ERISLPConfiguration newConfig : configsToUse) {
+              if (oldConfig.getAccessPath() == newConfig.getAccessPath() && oldConfig.getAttributesAndKeys().containsAll(newConfig.getAttributesAndKeys())) {
+                continue outer;
+              }
+            }
+            configHasChanged = true;
+            break;
+          }
+        }
 
 
         logger.debug("        -> algorithm '2' (the one that decides) says config has changed for living partition {}: {}", livingPartition, configHasChanged);