data_service_serializer.py
ofrak.service.serialization.serializers.data_service_serializer
DataRootSerializer (SerializerInterface)
obj_to_pjson(self, obj, type_hint)
Serialize the object to PJSON. Note that the generic self._service.to_pjson
can be used here.
Source code in ofrak/service/serialization/serializers/data_service_serializer.py
def obj_to_pjson(self, obj: _DataRoot, type_hint: Any) -> Dict[str, PJSONType]:
data_root_pjson = {
attr_name: self._service.to_pjson(getattr(obj, attr_name), type_hint)
for attr_name, type_hint in self.data_root_annotations.items()
}
return data_root_pjson
pjson_to_obj(self, pjson_obj, type_hint)
Deserialize PJSON into the object. Note that the generic self._service.from_pjson
can be used here.
Source code in ofrak/service/serialization/serializers/data_service_serializer.py
def pjson_to_obj(self, pjson_obj: Dict[str, PJSONType], type_hint: Any) -> _DataRoot:
root_model = self._service.from_pjson(pjson_obj["model"], DataModel)
data = self._service.from_pjson(pjson_obj["data"], bytes)
children = self._service.from_pjson(pjson_obj["_children"], Dict[DataId, DataModel])
grid_starts_first: _GridXAxisT = []
grid_ends_first: _GridXAxisT = []
for model in children.values():
default_set: Set[DataId] = set()
set1 = _DataRoot._add_to_grid(
grid_starts_first, model.range.start, model.range.end, default_set
)
set2 = _DataRoot._add_to_grid(
grid_ends_first, model.range.end, model.range.start, default_set
)
assert set1 is set2 # These sets should always be the same!
set1.add(model.id)
data_root = _DataRoot(root_model, data)
data_root._children = children
data_root._grid_starts_first = grid_starts_first
data_root._grid_ends_first = grid_ends_first
return data_root
DataServiceSerializer (SerializerInterface)
Serialize and deserialize DataService
into PJSONType
.
The DataService
has some internal data structures which require custom
serialization/deserialization, specifically the _DataRoot and _Waypoint. This is done with
methods of this class, and avoids serializing redundant information.
obj_to_pjson(self, obj, _type_hint)
Serialize the object to PJSON. Note that the generic self._service.to_pjson
can be used here.
Source code in ofrak/service/serialization/serializers/data_service_serializer.py
def obj_to_pjson(self, obj: DataService, _type_hint: Any) -> PJSONType:
return self._service.to_pjson(getattr(obj, "_roots"), Dict[DataId, _DataRoot])
pjson_to_obj(self, pjson_obj, _type_hint)
Deserialize PJSON into the object. Note that the generic self._service.from_pjson
can be used here.
Source code in ofrak/service/serialization/serializers/data_service_serializer.py
def pjson_to_obj(self, pjson_obj: Dict[str, Dict], _type_hint: Any) -> DataService:
model_store = {}
roots = self._service.from_pjson(pjson_obj, Dict[DataId, _DataRoot])
# The DataService assumes that the DataModel instance in the model store is the same
# instance in the _DataRoot.model (and _DataRoot._children). Ensure that this is the case
# before returning the DataService.
for data_id, root_model in roots.items():
model_store[data_id] = root_model.model
for child in root_model.get_children():
model_store[child.id] = child
data_service: DataService = DataService.__new__(DataService)
data_service._model_store = model_store
data_service._roots = roots
return data_service
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