Kontinuation commented on code in PR #555: URL: https://github.com/apache/sedona-db/pull/555#discussion_r2736115479
########## rust/sedona-spatial-join/src/utils/disposable_async_cell.rs: ########## @@ -0,0 +1,194 @@ +// 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. + +use std::fmt; + +use parking_lot::Mutex; +use tokio::sync::Notify; + +/// Error returned when writing to a [`DisposableAsyncCell`] fails. +#[derive(Debug, Clone, PartialEq, Eq)] +pub(crate) enum CellSetError { + /// The cell has already been disposed, so new values are rejected. + Disposed, + + /// The cell already has a value. + AlreadySet, +} + +/// An asynchronous cell that can be set at most once before either being +/// disposed or read by any number of waiters. +/// +/// Awaiters calling [`DisposableAsyncCell::get`] will park until a value is set +/// or the cell is disposed. Once disposed, `get` returns `None` and `set` +/// returns [`CellSetError::Disposed`]. Review Comment: Added comment for how it is used by PartitionedIndexProvider and its role in the partitioned spatial join workflow. -- 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: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
