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53 lines
1.8 KiB
C++
53 lines
1.8 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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#pragma once
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#include <memory>
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#include <vector>
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#include "arrow/compute/type_fwd.h"
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#include "arrow/util/visibility.h"
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namespace arrow {
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class Status;
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namespace compute {
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/// \brief An operation is a node in a computation graph, taking input data
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/// expression dependencies and emitting an output expression
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class ARROW_EXPORT Operation : public std::enable_shared_from_this<Operation> {
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public:
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virtual ~Operation() = default;
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/// \brief Check input expression arguments and output the type of resulting
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/// expression that this operation produces. If the input arguments are
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/// invalid, error Status is returned
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/// \param[out] out the returned well-typed expression
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/// \return success or failure
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virtual Status ToExpr(ExprPtr* out) const = 0;
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/// \brief Return the input expressions used to instantiate the
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/// operation. The default implementation returns an empty vector
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/// \return a vector of expressions
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virtual std::vector<ExprPtr> input_args() const;
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};
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} // namespace compute
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} // namespace arrow
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