[Zope3-checkins] SVN: Zope3/trunk/src/zope/app/recorder/__init__.py It's less error-prone to use instance attributes instead of class attributes

[Dmitry Vasiliev]

Log message for revision 29608:
  It's less error-prone to use instance attributes instead of class attributes
  for mutable types even for singletons.
  

Changed:
  U   Zope3/trunk/src/zope/app/recorder/__init__.py

-=-
Modified: Zope3/trunk/src/zope/app/recorder/__init__.py
===================================================================
--- Zope3/trunk/src/zope/app/recorder/__init__.py	2005-03-21 02:26:41 UTC (rev 29607)
+++ Zope3/trunk/src/zope/app/recorder/__init__.py	2005-03-21 10:49:58 UTC (rev 29608)
@@ -161,8 +161,9 @@
     'add' needs extra locking.
     """
 
-    _requests = {}
-    _lock = threading.Lock()
+    def __init__(self):
+        self._requests = {}
+        self._lock = threading.Lock()
 
     def add(self, rr):
         """Add a RecordedRequest to the list."""
@@ -212,11 +213,13 @@
           the problem, or remove this class.
     """
 
-    _ram_storage = ZODB.MappingStorage.MappingStorage()
-    _ram_db = ZODB.DB(_ram_storage)
-    _conns = {}
     _key = 'RequestStorage'
 
+    def __init__(self):
+        self._ram_storage = ZODB.MappingStorage.MappingStorage()
+        self._ram_db = ZODB.DB(self._ram_storage)
+        self._conns = {}
+
     def _getData(self):
         """Get the shared data container from the mapping storage."""
         # This method closely mimics RAMSessionDataContainer._getData