Some chars are not allowed by memcached to build the key, so clean them up

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@28902 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/CachePlugins/DistributedRamCache.py

@@ -36,6 +36,7 @@ from BaseCache import BaseCache
 from BaseCache import CacheEntry
 from Products.ERP5Type import interfaces
 import zope.interface
+import string
 
 try:
   import memcache
@@ -105,6 +106,8 @@ class DistributedRamCache(BaseCache):
     ## such behaviour when constructing cache_id we add scope in front
     cache_id = "%s%s%s%s" % (self._key_prefix, self._cache_plugin_path,
                              scope, cache_id)
+    #Some chars are not allowed by memcached to build the key
+    cache_id = cache_id.translate(string.maketrans('', ''), '[]()<>\'", ')
     if self._server_max_key_length != 0:
       ## memcached will fail to store cache_id longer than MEMCACHED_SERVER_MAX_KEY_LENGTH.
       return cache_id[:self._server_max_key_length]