--- a/flys-artifacts/src/main/java/de/intevation/flys/artifacts/datacage/templating/FunctionResolver.java	Tue Apr 09 11:53:47 2013 +0200
+++ b/flys-artifacts/src/main/java/de/intevation/flys/artifacts/datacage/templating/FunctionResolver.java	Tue Apr 09 12:00:52 2013 +0200
@@ -1,7 +1,9 @@
 package de.intevation.flys.artifacts.datacage.templating;
 
+import java.text.SimpleDateFormat;
 import java.util.ArrayList;
 import java.util.Collection;
+import java.util.Date;
 import java.util.List;
 import java.util.Map;
 
@@ -90,6 +92,13 @@
                 return FunctionResolver.this.buildHelper.hasResult();
             }
         });
+
+        addFunction("date-format", 2, new XPathFunction() {
+            @Override
+            public Object evaluate(List args) throws XPathFunctionException {
+                return dateFormat(args);
+            }
+        });
     }
 
     /**
@@ -278,5 +287,20 @@
             return haystack;
         }
     }
+
+    public Object dateFormat(List args) throws XPathFunctionException {
+        Object pattern = args.get(0);
+        Object date    = args.get(1);
+        if (pattern instanceof String && date instanceof Date) {
+            try {
+                // TODO: Take locale into account.
+                return new SimpleDateFormat((String)pattern).format((Date)date);
+            }
+            catch (IllegalArgumentException iae) {
+                throw new XPathFunctionException(iae);
+            }
+        }
+        return "";
+    }
 }
 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :