--- a/gnv-artifacts/src/main/java/de/intevation/gnv/utils/InputValidator.java	Tue Mar 30 14:16:07 2010 +0000
+++ b/gnv-artifacts/src/main/java/de/intevation/gnv/utils/InputValidator.java	Tue Mar 30 16:51:20 2010 +0000
@@ -65,8 +65,27 @@
 
     public static boolean isInputValid(String input, String type) {
         log.debug("InputValidator.isInputValid " + input + " " + type);
+
+        // Let's check polygons and linestrings first, because they might 
+        // contain comma. A splitting at comma characters wouldn't be good here.
+        if ("Polygon".equalsIgnoreCase(type) || "Linestring".equalsIgnoreCase(type))
+        {
+            try {
+                WKTReader reader = new WKTReader();
+                reader.read(input);
+
+                return true;
+            }
+            catch (ParseException pe) {
+                log.warn(pe, pe);
+                return false;
+            }
+        }
+
+        // Check all the other input here
         boolean returnValue = false;
         String[] values = input.split(",");
+
         for (int i = 0; i < values.length; i++) {
             boolean valid;