--- a/flys-artifacts/src/main/java/de/intevation/flys/artifacts/FLYSArtifact.java	Thu Oct 18 20:14:48 2012 +0200
+++ b/flys-artifacts/src/main/java/de/intevation/flys/artifacts/FLYSArtifact.java	Mon Oct 22 07:34:45 2012 +0200
@@ -249,6 +249,7 @@
     }
 
 
+    /** Clone the internal map of map of state-name to state-data. */
     protected Map<String, StateData> cloneData() {
         Map<String, StateData> copy = new TreeMap<String, StateData>();
 
@@ -518,7 +519,7 @@
             String.valueOf(context.isInBackground()),
             true);
 
-        CalculationMessage  message  = (CalculationMessage) messages.getLast();
+        CalculationMessage message = (CalculationMessage) messages.getLast();
         cr.addAttr(
             inBackground,
             "steps",
@@ -743,6 +744,7 @@
     }
 
 
+    /** Remove and return statedata associated to name. */
     protected StateData removeData(String name) {
         return this.data.remove(name);
     }
@@ -760,6 +762,7 @@
         return data.get(name);
     }
 
+
     /**
      * A derived Artifact class can use this method to set the data
      */
@@ -767,6 +770,7 @@
         this.data = data;
     }
 
+
     /** Return named data item, null if not found. */
     public String getDataAsString(String name) {
         StateData data = getData(name);
@@ -887,9 +891,11 @@
     }
 
 
+    /** Return all produced facets. */
     public List<Facet> getFacets() {
         List<Facet> all = new ArrayList<Facet>();
 
+        // Iterate over facets of each state.
         for (List<Facet> fs: facets.values()) {
             all.addAll(fs);
         }
@@ -1488,6 +1494,7 @@
     }
 
 
+    /** Destroy and clean up state with given id. */
     protected void destroyState(String id, Object context) {
         State s = getState(context, id);
         s.endOfLife(this, context);