def _parse_map_entry(self, messages_with_map, map_field_name, keys_needed):
parsed_map_submessage = struct2tensor_ops.parse_message_level(
tf.constant([m.SerializeToString() for m in messages_with_map]),
test_map_pb2.MessageWithMap.DESCRIPTOR, [map_field_name])[0]
return struct2tensor_ops.parse_proto_map(
parsed_map_submessage.value, parsed_map_submessage.index,
parsed_map_submessage.field_descriptor.message_type, keys_needed)
def test_corrupted_message(self):
with self.assertRaises(tf.errors.DataLossError):
self.evaluate(
struct2tensor_ops.parse_proto_map(
tf.constant(["corrupted message"]),
tf.constant([0], dtype=tf.int64),
test_map_pb2.MessageWithMap.DESCRIPTOR.
fields_by_name["int32_string_map"].message_type, ["0"]))
def _get_map_parsed_fields(
desc: descriptor.Descriptor,
regular_fields: Mapping[StrStep, struct2tensor_ops._ParsedField],
field_names: Set[StrStep],
backing_str_tensor: Optional[tf.Tensor] = None
) -> Mapping[StrStep, struct2tensor_ops._ParsedField]:
"""Gets the map proto ParsedFields.
field_names includes all the fields: map fields, any fields, and
regular fields.
Args:
desc: the descriptor of the parent proto.
regular_fields: the fields that are parsed directly from the proto.
field_names: all fields needed: map fields, any fields, and regular fields.
backing_str_tensor: a string tensor representing the root serialized proto.
This is passed to keep string_views of the tensor valid for all children
of the root expression
Returns:
A map from field names to ParsedFields, only for the field names of the form
foo[bar].
"""
maps_to_parse = collections.defaultdict(dict)
for x in field_names:
if path.is_map_indexing_step(x):
map_field_name, key = path.parse_map_indexing_step(x)
maps_to_parse[map_field_name][key] = x
result_as_list = []
for map_field_name, v in maps_to_parse.items():
parsed_map_field = regular_fields[map_field_name]
keys_needed = list(v.keys())
map_field_value = parsed_map_field.value
map_field_index = parsed_map_field.index
map_field_desc = desc.fields_by_name[map_field_name].message_type
values_and_parent_indices = struct2tensor_ops.parse_proto_map(
map_field_value, map_field_index, map_field_desc, keys_needed,
backing_str_tensor)
for map_key, [value, parent_index] in zip(keys_needed,
values_and_parent_indices):
result_as_list.append(
struct2tensor_ops._ParsedField(field_name=v[map_key],
field_descriptor=None,
index=parent_index,
value=value))
return {x.field_name: x for x in result_as_list}
def _get_map_parsed_fields(desc, regular_fields, field_names):
"""Gets the map proto ParsedFields.
field_names includes all the fields: map fields, any fields, and
regular fields.
Args:
desc: the descriptor of the parent proto.
regular_fields: the fields that are parsed directly from the proto.
field_names: all fields needed: map fields, any fields, and regular fields.
Returns:
A map from field names to ParsedFields, only for the field names of the form
foo[bar].
"""
maps_to_parse = collections.defaultdict(dict)
for x in field_names:
if path.is_map_indexing_step(x):
map_field_name, key = path.parse_map_indexing_step(x)
maps_to_parse[map_field_name][key] = x
result_as_list = []
for map_field_name, v in maps_to_parse.items():
parsed_map_field = regular_fields[map_field_name]
keys_needed = list(v.keys())
map_field_value = parsed_map_field.value
map_field_index = parsed_map_field.index
map_field_desc = desc.fields_by_name[map_field_name].message_type
values_and_parent_indices = struct2tensor_ops.parse_proto_map(
map_field_value, map_field_index, map_field_desc, keys_needed)
for map_key, [value, parent_index] in zip(keys_needed,
values_and_parent_indices):
result_as_list.append(
struct2tensor_ops._ParsedField(field_name=v[map_key],
field_descriptor=None,
index=parent_index,
value=value))
return {x.field_name: x for x in result_as_list}