arrow/acero/order_by_impl.h

0001 // Licensed to the Apache Software Foundation (ASF) under one
0002 // or more contributor license agreements.  See the NOTICE file
0003 // distributed with this work for additional information
0004 // regarding copyright ownership.  The ASF licenses this file
0005 // to you under the Apache License, Version 2.0 (the
0006 // "License"); you may not use this file except in compliance
0007 // with the License.  You may obtain a copy of the License at
0008 //
0009 //   http://www.apache.org/licenses/LICENSE-2.0
0010 //
0011 // Unless required by applicable law or agreed to in writing,
0012 // software distributed under the License is distributed on an
0013 // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
0014 // KIND, either express or implied.  See the License for the
0015 // specific language governing permissions and limitations
0016 // under the License.
0017
0018 #pragma once
0019
0020 #include <functional>
0021 #include <memory>
0022 #include <vector>
0023
0024 #include "arrow/acero/options.h"
0025 #include "arrow/record_batch.h"
0026 #include "arrow/result.h"
0027 #include "arrow/status.h"
0028 #include "arrow/type.h"
0029
0030 namespace arrow {
0031
0032 using compute::ExecContext;
0033
0034 namespace acero {
0035
0036 class OrderByImpl {
0037  public:
0038   virtual ~OrderByImpl() = default;
0039
0040   virtual void InputReceived(const std::shared_ptr<RecordBatch>& batch) = 0;
0041
0042   virtual Result<Datum> DoFinish() = 0;
0043
0044   virtual std::string ToString() const = 0;
0045
0046   static Result<std::unique_ptr<OrderByImpl>> MakeSort(
0047       ExecContext* ctx, const std::shared_ptr<Schema>& output_schema,
0048       const SortOptions& options);
0049
0050   static Result<std::unique_ptr<OrderByImpl>> MakeSelectK(
0051       ExecContext* ctx, const std::shared_ptr<Schema>& output_schema,
0052       const SelectKOptions& options);
0053 };
0054
0055 }  // namespace acero
0056 }  // namespace arrow