--- a/flys-client/src/main/java/de/intevation/flys/client/server/CollectionHelper.java	Thu Oct 13 10:22:39 2011 +0000
+++ b/flys-client/src/main/java/de/intevation/flys/client/server/CollectionHelper.java	Thu Oct 13 12:25:07 2011 +0000
@@ -267,7 +267,7 @@
 
 
     /**
-     * This method takes the DESCRIBE document of the Collections describe()
+     * Take the DESCRIBE document of the Collections describe()
      * operation and extracts the information about the collection itself and
      * the collection items.
      *
@@ -299,8 +299,13 @@
             "art:artifact-collection/@art:name",
             ArtifactNamespaceContext.INSTANCE);
 
-        if (uuid.length() == 0 || ttlStr.length() == 0) {
-            System.err.println("Found an invalid Collection!");
+        if (uuid.length() == 0) {
+            System.err.println("Found an invalid (zero length uuid) Collection!");
+            return null;
+        }
+
+        if (ttlStr.length() == 0) {
+            System.err.println("Found an invalid Collectioni (zero length ttl)!");
             return null;
         }
 
@@ -611,6 +616,11 @@
     }
 
 
+    /**
+     * Add an artifact to a collection.
+     * @param collection Collection to add artifact to.
+     * @param artifact   Artifact to add to collection
+     */
     public static Collection addArtifact(
         Collection collection,
         Artifact   artifact,