Index: topia/src/java/org/codelutin/topia/TopiaId.java
diff -u topia/src/java/org/codelutin/topia/TopiaId.java:1.4 topia/src/java/org/codelutin/topia/TopiaId.java:1.5
--- topia/src/java/org/codelutin/topia/TopiaId.java:1.4	Fri Aug  6 18:02:38 2004
+++ topia/src/java/org/codelutin/topia/TopiaId.java	Tue Jun 28 14:08:34 2005
@@ -23,9 +23,9 @@
  *
  * @author Benjamin Poussin <poussin@codelutin.com>
  * Copyright Code Lutin
- * @version $Revision: 1.4 $
+ * @version $Revision: 1.5 $
  *
- * Mise a jour: $Date: 2004/08/06 18:02:38 $
+ * Mise a jour: $Date: 2005/06/28 14:08:34 $
  * par : $Author: bpoussin $
  */
 
@@ -68,6 +68,9 @@
     * Cree un topiaId pour une certaine classe
     */
     public static String create(Class clazz){
+        if(!clazz.isInterface()){
+            throw new IllegalArgumentException("Only interface is permit to create id: " + clazz);
+        }
         return clazz.getName()  + "#" + System.currentTimeMillis() + "#" + Math.random();
     }