def __normalize_and_convert_keys(cls, keys):
"""Normalize and convert all keys to BlobKey type.
This method is based on datastore.NormalizeAndTypeCheck().
Args:
keys: A single key or a list/tuple of keys. Keys may be a string
or BlobKey
Returns:
Single key or list with all strings replaced by BlobKey instances.
"""
if isinstance(keys, (list, tuple)):
multiple = True
keys = list(keys)
else:
multiple = False
keys = [keys]
for index, key in enumerate(keys):
if not isinstance(key, (basestring, BlobKey)):
raise datastore_errors.BadArgumentError(
'Expected str or BlobKey; received %s (a %s)' % (
key,
datastore.typename(key)))
keys[index] = datastore.Key.from_path(cls.kind(), str(key))
if multiple:
return keys
else:
return keys[0]
def __normalize_and_convert_keys(cls, keys):
"""Normalize and convert all keys to BlobKey type.
This method is based on datastore.NormalizeAndTypeCheck().
Args:
keys: A single key or a list/tuple of keys. Keys may be a string
or BlobKey
Returns:
Single key or list with all strings replaced by BlobKey instances.
"""
if isinstance(keys, (list, tuple)):
multiple = True
keys = list(keys)
else:
multiple = False
keys = [keys]
for index, key in enumerate(keys):
if not isinstance(key, (basestring, BlobKey)):
raise datastore_errors.BadArgumentError(
'Expected str or BlobKey; received %s (a %s)' %
(key, datastore.typename(key)))
keys[index] = datastore.Key.from_path(cls.kind(),
str(key),
namespace='')
if multiple:
return keys
else:
return keys[0]
def _to_mutexes(mutexes_or_keys):
"""Normalizes and type checks the given sequence.
Args:
mutexes_or_keys: sequence of Mutex objects or keys
Returns:
list of Mutexes
"""
mutexes = []
for arg in mutexes_or_keys:
if isinstance(arg, Mutex):
mutexes.append(arg)
elif isinstance(arg, db.Key):
mutexes.append(Mutex.get(arg))
else:
raise db.BadArgumentError(
'Expected a Mutex instance or key; received %s (a %s).' %
(arg, datastore.typename(arg)))
return mutexes
