arrow/acero/asof_join_node.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 #include <vector>
0019
0020 #include "arrow/acero/options.h"
0021 #include "arrow/acero/visibility.h"
0022 #include "arrow/compute/exec.h"
0023 #include "arrow/type.h"
0024
0025 namespace arrow {
0026 namespace acero {
0027 namespace asofjoin {
0028
0029 using AsofJoinKeys = AsofJoinNodeOptions::Keys;
0030
0031 /// \brief Make the output schema of an as-of-join node
0032 ///
0033 /// \param[in] input_schema the schema of each input to the node
0034 /// \param[in] input_keys the key of each input to the node
0035 ARROW_ACERO_EXPORT Result<std::shared_ptr<Schema>> MakeOutputSchema(
0036     const std::vector<std::shared_ptr<Schema>>& input_schema,
0037     const std::vector<AsofJoinKeys>& input_keys);
0038
0039 }  // namespace asofjoin
0040 }  // namespace acero
0041 }  // namespace arrow