diff -r 196493bd099c -r 77ebdbe93cf8 entity.py
--- a/entity.py	Fri Aug 21 08:31:01 2009 +0200
+++ b/entity.py	Fri Aug 21 08:31:25 2009 +0200
@@ -825,6 +825,11 @@
             assert role
             self._related_cache.pop('%s_%s' % (rtype, role), None)
 
+    def clear_all_caches(self):
+        self.clear()
+        for rschema, _, role in self.e_schema.relation_definitions():
+            self.clear_related_cache(rschema.type, role)
+
     # raw edition utilities ###################################################
 
     def set_attributes(self, _cw_unsafe=False, **kwargs):