def to_bundle(self, prefix=''):
""" Turns an object into a serialized bundle.
Args:
prefix: The prefix to prepend to the keys corresponding to the
instance variable names
Returns:
A serialized bundle that can be unbundled into the same object.
"""
bnd = Bundle()
metacount = 0
bnd.set_value(prefix + '.type', self.__class__.__name__)
for key, val in self.__dict__.iteritems():
if isinstance(val, Bundleable):
# take care of nested bundleables
bnd.assimilate(val.to_bundle(prefix='%s.%s' % (prefix, key)))
arg_type = val.__module__ + '.' + val.__class__.__name__
meta = BundleableMetadata(key, arg_type,
'%s.%s' % (prefix, key))
bnd.assimilate(
meta.to_bundle('%s.meta.%d' % (prefix, metacount)))
metacount += 1
elif isinstance(val, list):
# take care of a list
if val:
if isinstance(val[0], Bundleable):
# list of bundleables
bnd.assimilate(
self.encode_list(val,
prefix='%s.%s' % (prefix, key)))
arg_type = val[0].__module__ + '.' + val[
0].__class__.__name__
meta = ListMetadata(key, arg_type,
'%s.%s' % (prefix, key), len(val))
bnd.assimilate(
meta.to_bundle('%s.meta.%d' % (prefix, metacount)))
metacount += 1
else:
# list of primitives - anything that can be converted to/from a string
for i, obj in enumerate(val):
bnd.set_value('%s.%s.%d' % (prefix, key, i), obj)
#TODO the line below only works if val is not empty
meta = ListMetadata(
key, 'prim.' + str(type(val[0]).__name__),
'%s.%s' % (prefix, key), len(val))
bnd.assimilate(
meta.to_bundle('%s.meta.%d' % (prefix, metacount)))
metacount += 1
else:
# empty list
bnd.set_value('%s.%s' % (prefix, key), val)
else:
bnd.set_value(prefix + "." + key, self.__dict__[key])
return bnd
def encode_list(item_list, prefix=''):
bnd = Bundle()
for i, item in enumerate(item_list):
bnd.assimilate(item.to_bundle('%s.%d' % (prefix, i)))
return bnd
