--- a/flys-artifacts/src/main/java/de/intevation/flys/artifacts/WMSDBArtifact.java	Wed Apr 03 15:59:01 2013 +0200
+++ b/flys-artifacts/src/main/java/de/intevation/flys/artifacts/WMSDBArtifact.java	Wed Apr 03 16:00:21 2013 +0200
@@ -149,17 +149,16 @@
 
         public int getRiverId() {
             if (riverId == 0) {
-                String   ids   = artifact.getDataAsString("ids");
-                String[] parts = ids.split(";");
+                String rid = getIdPart(0);
 
                 try {
-                    riverId = Integer.parseInt(parts[0]);
+                    riverId = Integer.parseInt(rid);
                 }
                 catch (NumberFormatException nfe) {
-                    logger.error("Cannot parse river id from '" + parts[0] + "'");
+                    logger.error("Cannot parse river id from '" +
+                            artifact.getDataAsString("ids") + "'");
                 }
             }
-
             return riverId;
         }
 
@@ -178,18 +177,33 @@
          */
         public String getName() {
             if (name == null) {
-                String ids = artifact.getDataAsString("ids");
-
-                String parts[] = ids != null ? ids.split(";") : null;
-
-                if (parts != null && parts.length >= 2) {
-                    name = parts[1];
-                }
+                name = getIdPart(1);
             }
 
             return name;
         }
 
+        /**
+         * Returns a part of the ID string. This method splits the
+         * 'ids' data string. It is expected, that the 'ids' string is
+         * seperated by ';'.
+         *
+         * @param number the position of the id data string
+         *
+         * @return the part of the id string at position number.
+         *         Null if number was out of bounds.
+         */
+        public String getIdPart(int number) {
+            String ids = artifact.getDataAsString("ids");
+
+            String parts[] = ids != null ? ids.split(";") : null;
+
+            if (parts != null && parts.length >= number + 1) {
+                return parts[number];
+            }
+            return null;
+        }
+
 
         /**
          * Returns the name of the layer (returned by getName()) or the layer