def to_stream(self,
stream_type: AutoStreamType = AUTO,
*args,
**kwargs) -> Stream:
stream_type = arg.acquire(stream_type, self.get_stream_type())
method_suffix = StreamType.of(stream_type).get_method_suffix()
method_name = 'to_{}'.format(method_suffix)
stream_method = self.__getattribute__(method_name)
return stream_method(stream_type, *args, **kwargs)
def stream(self,
data: Iterable,
stream_type: Union[StreamType, Stream, arg.Auto] = arg.AUTO,
ex: OptionalFields = None,
**kwargs) -> Stream:
stream_type = arg.acquire(stream_type, self.get_stream_type())
if isinstance(stream_type, str):
stream_class = StreamType(stream_type).get_class()
elif isclass(stream_type):
stream_class = stream_type
else:
stream_class = stream_type.get_class()
meta = self.get_compatible_meta(stream_class, ex=ex)
meta.update(kwargs)
return StreamType.of(stream_type).stream(data, **meta)
def to_stream(self,
data: Optional[Iterable] = None,
stream_type: AutoStreamType = AUTO,
ex: OptionalFields = None,
**kwargs) -> Union[RegularStream, Native]:
stream_type = Auto.acquire(stream_type, self.get_stream_type())
if data:
stream_class = stream_type.get_class()
meta = self.get_compatible_meta(stream_class, ex=ex)
meta.update(kwargs)
if 'count' not in meta:
meta['count'] = self.get_count()
if 'source' not in meta:
meta['source'] = self.get_source()
return stream_class(data, **meta)
elif stream_type == StreamType.SqlStream:
return self
else:
method_suffix = StreamType.of(stream_type).get_method_suffix()
method_name = 'to_{}'.format(method_suffix)
stream_method = self.__getattribute__(method_name)
return stream_method()
