def __setstate__(self, state):
""" See IPersistent.
"""
if isinstance(state,tuple):
inst_dict, slots = state
else:
inst_dict, slots = state, ()
idict = getattr(self, '__dict__', None)
if inst_dict is not None:
if idict is None:
raise TypeError('No instance dict')
idict.clear()
for k, v in inst_dict.items():
idict[intern(k)] = v
slotnames = self._slotnames()
if slotnames:
for k, v in slots.items():
setattr(self, k, v)
def __setstate__(self, state):
""" See IPersistent.
"""
if isinstance(state, tuple):
inst_dict, slots = state
else:
inst_dict, slots = state, ()
idict = getattr(self, '__dict__', None)
if inst_dict is not None:
if idict is None:
raise TypeError('No instance dict')
idict.clear()
for k, v in inst_dict.items():
idict[intern(k)] = v
slotnames = self._slotnames()
if slotnames:
for k, v in slots.items():
setattr(self, k, v)
def __setstate__(self, state):
""" See IPersistent.
"""
if isinstance(state, tuple):
inst_dict, slots = state
else:
inst_dict, slots = state, ()
idict = getattr(self, '__dict__', None)
if inst_dict is not None:
if idict is None:
raise TypeError('No instance dict')
idict.clear()
for k, v in inst_dict.items():
# Normally the keys for instance attributes are interned.
# Do that here, but only if it is possible to do so.
idict[intern(k) if type(k) is str else k] = v
slotnames = self._slotnames()
if slotnames:
for k, v in slots.items():
setattr(self, k, v)
def __setstate__(self, state):
""" See IPersistent.
"""
if isinstance(state,tuple):
inst_dict, slots = state
else:
inst_dict, slots = state, ()
idict = getattr(self, '__dict__', None)
if inst_dict is not None:
if idict is None:
raise TypeError('No instance dict')
idict.clear()
for k, v in inst_dict.items():
# Normally the keys for instance attributes are interned.
# Do that here, but only if it is possible to do so.
idict[intern(k) if type(k) is str else k] = v
slotnames = self._slotnames()
if slotnames:
for k, v in slots.items():
setattr(self, k, v)
# The KeyError arises in ZODB: ZODB.serialize.ObjectWriter
# can assign a jar and an oid to newly seen persistent objects,
# but because they are newly created, they aren't in the
# pickle cache yet. There doesn't seem to be a way to distinguish
# that at this level, all we can do is catch it.
# The AttributeError arises in ZODB test cases
try:
jar._cache.mru(oid)
except (AttributeError, KeyError):
pass
def _p_is_in_cache(self, jar=None):
oid = _OGA(self, '_Persistent__oid')
if not oid:
return False
jar = jar or _OGA(self, '_Persistent__jar')
cache = getattr(jar, '_cache', None)
if cache is not None:
return cache.get(oid) is self
def _estimated_size_in_24_bits(value):
if value > 1073741696:
return 16777215
return (value // 64) + 1
_SPECIAL_NAMES.update(
[intern('_Persistent' + x) for x in Persistent.__slots__])
# The KeyError arises in ZODB: ZODB.serialize.ObjectWriter
# can assign a jar and an oid to newly seen persistent objects,
# but because they are newly created, they aren't in the
# pickle cache yet. There doesn't seem to be a way to distinguish
# that at this level, all we can do is catch it.
# The AttributeError arises in ZODB test cases
try:
jar._cache.mru(oid)
except (AttributeError,KeyError):
pass
def _p_is_in_cache(self, jar=None):
oid = _OGA(self, '_Persistent__oid')
if not oid:
return False
jar = jar or _OGA(self, '_Persistent__jar')
cache = getattr(jar, '_cache', None)
if cache is not None:
return cache.get(oid) is self
def _estimated_size_in_24_bits(value):
if value > 1073741696:
return 16777215
return (value//64) + 1
_SPECIAL_NAMES.update([intern('_Persistent' + x) for x in Persistent.__slots__])
# And this is an implementation detail of this class; it holds
# the standard names plus the slot names, allowing for just one
# check in __getattribute__
_SPECIAL_NAMES = set(SPECIAL_NAMES)
# __ring is for use by PickleCachePy and is opaque to us.
_SLOTS = (
'__jar',
'__oid',
'__serial',
'__flags',
'__size',
'__ring',
)
_SPECIAL_NAMES.update([intern('_Persistent' + x) for x in _SLOTS])
# Represent 8-byte OIDs as hex integer, just like
# ZODB does.
_OID_STRUCT = struct.Struct('>Q')
_OID_UNPACK = _OID_STRUCT.unpack
@use_c_impl
@implementer(interfaces.IPersistent)
class Persistent(object):
""" Pure Python implmentation of Persistent base class
"""
__slots__ = _SLOTS
def __new__(cls, *args, **kw):
