| /** |
| * 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/ComparisonExpression.hpp" |
| |
| #include <string> |
| #include <unordered_map> |
| #include <vector> |
| |
| #include "expressions/predicate/ComparisonPredicate.hpp" |
| #include "query_optimizer/OptimizerTree.hpp" |
| #include "query_optimizer/expressions/AttributeReference.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 "types/operations/comparisons/Comparison.hpp" |
| #include "types/operations/comparisons/ComparisonID.hpp" |
| |
| #include "glog/logging.h" |
| |
| namespace quickstep { |
| namespace optimizer { |
| namespace expressions { |
| |
| ComparisonExpression::ComparisonExpression(const Comparison &comparison, |
| const ScalarPtr &left, |
| const ScalarPtr &right) |
| : comparison_(comparison), left_(left), right_(right) { |
| DCHECK(comparison_.canCompareTypes(left->getValueType(), |
| right->getValueType())); |
| addChild(left_); |
| addChild(right_); |
| } |
| |
| std::string ComparisonExpression::getName() const { |
| return comparison_.getName(); |
| } |
| |
| bool ComparisonExpression::isEqualityComparisonPredicate() const { |
| return comparison_.getComparisonID() == ComparisonID::kEqual; |
| } |
| |
| ExpressionPtr ComparisonExpression::copyWithNewChildren( |
| const std::vector<ExpressionPtr> &new_children) const { |
| DCHECK_EQ(new_children.size(), children().size()); |
| ScalarPtr left_operand; |
| ScalarPtr right_operand; |
| CHECK(SomeScalar::MatchesWithConditionalCast(new_children[0], &left_operand)); |
| CHECK(SomeScalar::MatchesWithConditionalCast(new_children[1], &right_operand)); |
| return ComparisonExpression::Create(comparison_, left_operand, right_operand); |
| } |
| |
| std::vector<AttributeReferencePtr> |
| ComparisonExpression::getReferencedAttributes() const { |
| std::vector<AttributeReferencePtr> referenced_attributes = |
| left_->getReferencedAttributes(); |
| const std::vector<AttributeReferencePtr> referenced_attributes_by_right_operand = |
| right_->getReferencedAttributes(); |
| referenced_attributes.insert(referenced_attributes.end(), |
| referenced_attributes_by_right_operand.begin(), |
| referenced_attributes_by_right_operand.end()); |
| return referenced_attributes; |
| } |
| |
| ::quickstep::Predicate* ComparisonExpression::concretize( |
| const std::unordered_map<ExprId, const CatalogAttribute*> &substitution_map) const { |
| return new ::quickstep::ComparisonPredicate( |
| comparison_, |
| left_->concretize(substitution_map), |
| right_->concretize(substitution_map)); |
| } |
| |
| void ComparisonExpression::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 { |
| non_container_child_field_names->push_back(""); |
| non_container_child_field_names->push_back(""); |
| non_container_child_fields->push_back(left_); |
| non_container_child_fields->push_back(right_); |
| } |
| |
| } // namespace expressions |
| } // namespace optimizer |
| } // namespace quickstep |