--- a/server/repository.py	Wed Jul 27 14:03:09 2011 +0200
+++ b/server/repository.py	Wed Jul 27 14:17:47 2011 +0200
@@ -927,14 +927,16 @@
                 nbclosed += 1
         return nbclosed
 
-    def internal_session(self, cnxprops=None):
-        """return a dbapi like connection/cursor using internal user which
-        have every rights on the repository. You'll *have to* commit/rollback
-        or close (rollback implicitly) the session once the job's done, else
-        you'll leak connections set up to the time where no one is
-        available, causing irremediable freeze...
+    def internal_session(self, cnxprops=None, safe=False):
+        """return a dbapi like connection/cursor using internal user which have
+        every rights on the repository. The `safe` argument is a boolean flag
+        telling if integrity hooks should be activated or not.
+
+        *YOU HAVE TO* commit/rollback or close (rollback implicitly) the
+        session once the job's done, else you'll leak connections set up to the
+        time where no one is available, causing irremediable freeze...
         """
-        session = InternalSession(self, cnxprops)
+        session = InternalSession(self, cnxprops, safe)
         session.set_cnxset()
         return session
 

--- a/server/session.py	Wed Jul 27 14:03:09 2011 +0200
+++ b/server/session.py	Wed Jul 27 14:17:47 2011 +0200
@@ -1276,12 +1276,13 @@
     is_internal_session = True
     running_dbapi_query = False
 
-    def __init__(self, repo, cnxprops=None):
+    def __init__(self, repo, cnxprops=None, safe=False):
         super(InternalSession, self).__init__(InternalManager(), repo, cnxprops,
                                               _id='internal')
         self.user._cw = self # XXX remove when "vreg = user._cw.vreg" hack in entity.py is gone
         self.cnxtype = 'inmemory'
-        self.disable_hook_categories('integrity')
+        if not safe:
+            self.disable_hook_categories('integrity')
 
     @property
     def cnxset(self):