max-muoto commented on code in PR #750: URL: https://github.com/apache/datafusion-python/pull/750#discussion_r1670771945
########## python/datafusion/record_batch.py: ########## @@ -0,0 +1,52 @@ +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, +# software distributed under the License is distributed on an +# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +# KIND, either express or implied. See the License for the +# specific language governing permissions and limitations +# under the License. + +from __future__ import annotations + +from typing import TYPE_CHECKING + +if TYPE_CHECKING: + import pyarrow + import datafusion._internal as df_internal + + +class RecordBatch: + def __init__(self, record_batch: df_internal.RecordBatch) -> None: + self.record_batch = record_batch + + def to_pyarrow(self) -> pyarrow.RecordBatch: + return self.record_batch.to_pyarrow() + + +class RecordBatchStream: + def __init__(self, record_batch_stream: df_internal.RecordBatchStream) -> None: + self.rbs = record_batch_stream + + def next(self) -> RecordBatch | None: + try: + next_batch = next(self) + except StopIteration: + return None + + return next_batch + + def __next__(self) -> RecordBatch | None: + next_batch = next(self.rbs) + return RecordBatch(next_batch) if next_batch is not None else None + + def __iter__(self) -> RecordBatchStream: Review Comment: `typing_extensions.Self` would be more accurate for the return-type here, if this was sub-classed for example. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: github-unsubscr...@datafusion.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: github-unsubscr...@datafusion.apache.org For additional commands, e-mail: github-h...@datafusion.apache.org
