CurtHagenlocher commented on code in PR #260: URL: https://github.com/apache/arrow-dotnet/pull/260#discussion_r2838617314
########## src/Apache.Arrow/Arrays/RunEndEncodedArray.cs: ########## @@ -0,0 +1,222 @@ +// 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. + +using System; +using Apache.Arrow.Types; + +namespace Apache.Arrow; + +/// <summary> +/// Represents a run-end encoded array. +/// A run-end encoded array stores consecutive runs of the same value more efficiently. +/// It contains two child arrays: run_ends (Int16/Int32/Int64) and values (any type). +/// The run_ends array stores the cumulative end positions of each run. +/// </summary> +public class RunEndEncodedArray : Array Review Comment: I was thinking something similar for dictionary-encoded values but hadn't yet gotten to the point of playing with implementation ideas. Ideally, a consumer ought to be able to say e.g "give me an `IReadOnlyList<DateTimeOffset>` for this column" and be able to get one whether it's straight values or encoded as a dictionary or as REE. -- 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]
