Fix commit r39141, due to hasty rework before commit.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@39171 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ZSQLCatalog/SQLCatalog.py

@@ -101,12 +101,15 @@ except ImportError:
   def getTransactionalVariable():
     return {}
 
-def generateCatalogCacheId(method_id, self, *args, **kwd):
-  # XXX: getPath is overkill for a unique cache identifier.
+def getInstanceID(instance):
+  # XXX: getPhysicalPath is overkill for a unique cache identifier.
   # What I would like to use instead of it is:
   #   (self._p_jar.db().database_name, self._p_oid)
   # but database_name is not unique in at least ZODB 3.4 (Zope 2.8.8).
-  return str((method_id, self.getCacheSequenceNumber(), self.getPath(),
+  return instance.getPhysicalPath()
+
+def generateCatalogCacheId(method_id, self, *args, **kwd):
+  return str((method_id, self.getCacheSequenceNumber(), getInstanceID(self),
     args, kwd))
 
 class transactional_cache_decorator: