# HG changeset patch
# User Sverre Rabbelier <srabbelier@gmail.com>
# Date 1252711163 -7200
# Node ID bf17c6a843dda8389a4fd03e10b724a4f27c2d58
# Parent  23e00d707255d5d8ac4cca7d0c1e0a3b40ede0c0
Add ValueStoreMiddleware

Based on the view decorator.

diff -r 23e00d707255 -r bf17c6a843dd app/soc/middleware/value_store.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/app/soc/middleware/value_store.py	Sat Sep 12 01:19:23 2009 +0200
@@ -0,0 +1,60 @@
+#!/usr/bin/python2.5
+#
+# Copyright 2009 the Melange authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Middleware to set up and empty the value store.
+"""
+
+__authors__ = [
+  '"Sverre Rabbelier" <sverre@rabbelier.nl>',
+  ]
+
+
+from soc.modules import callback
+
+
+class ValueStoreMiddleware(object):
+  """Middleware class to set up and empty the value store.
+  """
+
+  def start(self, request):
+    """Sets up the value store.
+
+    Args:
+      request: a Django HttpRequest object
+    """
+
+    core = callback.getCore()
+    core.startNewRequest(request)
+
+  def end(self, request):
+    """Empties the value store.
+
+    Args:
+      request: a Django HttpRequest object
+    """
+
+    core = callback.getCore()
+    core.endRequest(request)
+
+  def process_request(self, request):
+    self.start(request)
+
+  def process_response(self, request, response):
+    self.end(request)
+    return response
+
+  def process_exception(self, request, exception):
+    self.end(request)