--- a/flys-artifacts/src/main/java/de/intevation/flys/artifacts/FLYSArtifact.java	Tue Aug 23 07:53:41 2011 +0000
+++ b/flys-artifacts/src/main/java/de/intevation/flys/artifacts/FLYSArtifact.java	Tue Aug 23 11:07:21 2011 +0000
@@ -121,8 +121,9 @@
      *
      * @return the name of the concrete artifact.
      */
-    public abstract String getName();
-
+    public String getName() {
+        return name;
+    }
 
     /**
      * Returns the FLYSContext from context object.
@@ -190,13 +191,52 @@
         filterFacets = buildFilterFacets(data);
     }
 
+    protected List<String> clonePreviousStateIds() {
+        return new ArrayList<String>(previousStateIds);
+    }
+
+    protected Map<String, StateData> cloneData() {
+        Map<String, StateData> copy = new TreeMap<String, StateData>();
+
+        for (Map.Entry<String, StateData> entry: data.entrySet()) {
+            copy.put(entry.getKey(), entry.getValue().deepCopy());
+        }
+
+        return copy;
+    }
+
+    protected Map<String, List<Facet>> cloneFacets() {
+        Map copy = new HashMap<String, List<Facet>>();
+
+        for (Map.Entry<String, List<Facet>> entry: facets.entrySet()) {
+            List<Facet> facets      = entry.getValue();
+            List<Facet> facetCopies = new ArrayList<Facet>(facets.size());
+            for (Facet facet: facets) {
+                facetCopies.add(facet.deepCopy());
+            }
+            copy.put(entry.getKey(), facetCopies);
+        }
+
+        return copy;
+    }
 
     protected void initialize(
         Artifact artifact,
         Object   context,
         CallMeta callMeta)
     {
-        // do nothing here
+        if (!(artifact instanceof FLYSArtifact)) {
+            return;
+        }
+
+        FLYSArtifact flys = (FLYSArtifact)artifact;
+
+        currentStateId   = flys.currentStateId;
+        previousStateIds = flys.clonePreviousStateIds();
+        name             = flys.name;
+        data             = flys.cloneData();
+        facets           = flys.cloneFacets();
+        // Do not clone filter facets!
     }
 
     protected Map<String, List<Facet>> buildFilterFacets(Document document) {