| /** |
| * 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. |
| **/ |
| |
| #include "query_optimizer/expressions/CommonSubexpression.hpp" |
| |
| #include <memory> |
| #include <string> |
| #include <unordered_map> |
| #include <unordered_set> |
| #include <vector> |
| |
| #include "expressions/scalar/ScalarSharedExpression.hpp" |
| #include "query_optimizer/OptimizerTree.hpp" |
| #include "query_optimizer/expressions/ExprId.hpp" |
| #include "query_optimizer/expressions/Expression.hpp" |
| #include "query_optimizer/expressions/PatternMatcher.hpp" |
| #include "query_optimizer/expressions/Scalar.hpp" |
| |
| #include "glog/logging.h" |
| |
| namespace quickstep { |
| namespace optimizer { |
| namespace expressions { |
| |
| ExpressionPtr CommonSubexpression::copyWithNewChildren( |
| const std::vector<ExpressionPtr> &new_children) const { |
| DCHECK_EQ(new_children.size(), children().size()); |
| DCHECK(SomeScalar::Matches(new_children[0])); |
| return CommonSubexpression::Create( |
| common_subexpression_id_, |
| std::static_pointer_cast<const Scalar>(new_children[0])); |
| } |
| |
| ::quickstep::Scalar* CommonSubexpression::concretize( |
| const std::unordered_map<ExprId, const CatalogAttribute*> &substitution_map, |
| const std::unordered_set<ExprId> &left_expr_ids, |
| const std::unordered_set<ExprId> &right_expr_ids) const { |
| return new ::quickstep::ScalarSharedExpression( |
| static_cast<int>(common_subexpression_id_), |
| operand_->concretize(substitution_map, left_expr_ids, right_expr_ids)); |
| } |
| |
| void CommonSubexpression::getFieldStringItems( |
| std::vector<std::string> *inline_field_names, |
| std::vector<std::string> *inline_field_values, |
| std::vector<std::string> *non_container_child_field_names, |
| std::vector<OptimizerTreeBaseNodePtr> *non_container_child_fields, |
| std::vector<std::string> *container_child_field_names, |
| std::vector<std::vector<OptimizerTreeBaseNodePtr>> *container_child_fields) const { |
| inline_field_names->push_back("common_subexpression_id"); |
| inline_field_values->push_back(std::to_string(common_subexpression_id_)); |
| |
| non_container_child_field_names->push_back("Operand"); |
| non_container_child_fields->push_back(operand_); |
| } |
| |
| } // namespace expressions |
| } // namespace optimizer |
| } // namespace quickstep |