Add ModelWithFieldAttributes *before* PolyModel, so that everything does not
become a "ModelWithFieldAttributes" in the Datastore.
The way PolyModel works, each Model class hierarchy is stored in the Datastore
as the class that directly inherited from PolyModel. So, we do not want to
insert ModelWithFieldAttributes *after* PolyModel by inheriting *from*
PolyModel, or everything would just be a ModelWithFieldAttributes in the
Datastore, instead of Person, Work, Group, etc.
"Memcached cache backend"
from django.core.cache.backends.base import BaseCache, InvalidCacheBackendError
from django.utils.encoding import smart_unicode, smart_str
try:
import cmemcache as memcache
except ImportError:
try:
import memcache
except:
raise InvalidCacheBackendError("Memcached cache backend requires either the 'memcache' or 'cmemcache' library")
class CacheClass(BaseCache):
def __init__(self, server, params):
BaseCache.__init__(self, params)
self._cache = memcache.Client(server.split(';'))
def add(self, key, value, timeout=0):
self._cache.add(key.encode('ascii', 'ignore'), value, timeout or self.default_timeout)
def get(self, key, default=None):
val = self._cache.get(smart_str(key))
if val is None:
return default
else:
if isinstance(val, basestring):
return smart_unicode(val)
else:
return val
def set(self, key, value, timeout=0):
if isinstance(value, unicode):
value = value.encode('utf-8')
self._cache.set(smart_str(key), value, timeout or self.default_timeout)
def delete(self, key):
self._cache.delete(smart_str(key))
def get_many(self, keys):
return self._cache.get_multi(map(smart_str,keys))