interval_tree_serializer.py

ofrak.service.serialization.serializers.interval_tree_serializer

IntervalTreeSerializer (SerializerInterface)

Serialize and deserialize third-party object IntervalTree into PJSONType.

Implementation: an IntervalTree is a binary lookup tree of intervals, each interval being an Interval object representing a 3-tuple (begin, end, data). As IntervalTree provides a from_tuples constructor, and has an all_intervals attribute, we can simply serialize it as its list of intervals (themselves serialized as tuples).

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/interval_tree_serializer.py

def obj_to_pjson(self, obj: IntervalTree, _type_hint: Any) -> PJSONType:
    return self._service.to_pjson(
        [(interval.begin, interval.end, interval.data) for interval in obj.all_intervals],
        Iterable[IntervalTreeTupleType],
    )

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/interval_tree_serializer.py

def pjson_to_obj(self, pjson_obj: PJSONType, type_hint: Any) -> IntervalTree:
    return IntervalTree.from_tuples(
        self._service.from_pjson(pjson_obj, Iterable[IntervalTreeTupleType])
    )