71 lines
2.3 KiB
C++
71 lines
2.3 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 "arrow/acero/exec_plan.h"
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#include "arrow/compute/api_aggregate.h"
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#include "arrow/engine/substrait/visibility.h"
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#include "arrow/type_fwd.h"
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namespace arrow {
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namespace engine {
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/// Execution information resulting from converting a Substrait relation.
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struct ARROW_ENGINE_EXPORT DeclarationInfo {
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/// The compute declaration produced thus far.
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acero::Declaration declaration;
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std::shared_ptr<Schema> output_schema;
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};
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/// Information resulting from converting a Substrait plan
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struct ARROW_ENGINE_EXPORT PlanInfo {
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/// The root declaration.
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///
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/// Only plans containing a single top-level relation are supported and so this will
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/// represent that relation.
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///
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/// This should technically be a RelRoot but some producers use a simple Rel here and so
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/// Acero currently supports that case.
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DeclarationInfo root;
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/// The names of the output fields
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///
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/// If `root` was created from a simple Rel then this will be empty
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std::vector<std::string> names;
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};
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/// An expression whose output has a name
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struct ARROW_ENGINE_EXPORT NamedExpression {
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/// An expression
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compute::Expression expression;
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// An optional name to assign to the output, may be the empty string
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std::string name;
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};
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/// A collection of expressions bound to a common schema
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struct ARROW_ENGINE_EXPORT BoundExpressions {
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/// The expressions
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std::vector<NamedExpression> named_expressions;
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/// The schema that all the expressions are bound to
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std::shared_ptr<Schema> schema;
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};
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} // namespace engine
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} // namespace arrow
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