| /** |
| * 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/LogicalOr.hpp" |
| |
| #include <memory> |
| #include <string> |
| #include <unordered_map> |
| #include <vector> |
| |
| #include "expressions/predicate/DisjunctionPredicate.hpp" |
| #include "expressions/predicate/TrivialPredicates.hpp" |
| #include "query_optimizer/expressions/ExprId.hpp" |
| #include "query_optimizer/expressions/PatternMatcher.hpp" |
| #include "query_optimizer/expressions/Predicate.hpp" |
| #include "query_optimizer/expressions/PredicateLiteral.hpp" |
| #include "utility/Cast.hpp" |
| |
| #include "glog/logging.h" |
| |
| namespace quickstep { |
| namespace optimizer { |
| namespace expressions { |
| |
| LogicalOr::LogicalOr(const std::vector<PredicatePtr> &operands) { |
| // Flatten the predicate tree. |
| operands_.reserve(operands.size()); |
| for (const PredicatePtr &operand : operands) { |
| LogicalOrPtr logical_or; |
| PredicateLiteralPtr literal; |
| if (SomeLogicalOr::MatchesWithConditionalCast(operand, &logical_or)) { |
| operands_.insert(operands_.end(), |
| logical_or->operands().begin(), |
| logical_or->operands().end()); |
| } else if (!SomePredicateLiteral::MatchesWithConditionalCast(operand, &literal) || |
| !literal->is_true()) { |
| operands_.push_back(operand); |
| } |
| } |
| |
| for (const PredicatePtr &operand : operands_) { |
| addChild(operand); |
| } |
| } |
| |
| ExpressionPtr LogicalOr::copyWithNewChildren( |
| const std::vector<ExpressionPtr> &new_children) const { |
| DCHECK_EQ(getNumChildren(), new_children.size()); |
| std::vector<PredicatePtr> operands; |
| for (const ExpressionPtr &expression : new_children) { |
| PredicatePtr new_expression; |
| CHECK(SomePredicate::MatchesWithConditionalCast(expression, &new_expression)); |
| operands.push_back(new_expression); |
| } |
| return LogicalOr::Create(operands); |
| } |
| |
| std::vector<AttributeReferencePtr> LogicalOr::getReferencedAttributes() const { |
| std::vector<AttributeReferencePtr> referenced_attributes; |
| for (const PredicatePtr &operand : operands()) { |
| const std::vector<AttributeReferencePtr> referenced_attributes_in_operand = |
| operand->getReferencedAttributes(); |
| referenced_attributes.insert(referenced_attributes.end(), |
| referenced_attributes_in_operand.begin(), |
| referenced_attributes_in_operand.end()); |
| } |
| return referenced_attributes; |
| } |
| |
| ::quickstep::Predicate* LogicalOr::concretize( |
| const std::unordered_map<ExprId, const CatalogAttribute*> &substitution_map) const { |
| if (operands_.empty()) { |
| return new FalsePredicate(); |
| } |
| |
| if (operands_.size() == 1u) { |
| return operands_[0]->concretize(substitution_map); |
| } |
| |
| std::unique_ptr<::quickstep::DisjunctionPredicate> concretized_predicate; |
| concretized_predicate.reset(new ::quickstep::DisjunctionPredicate()); |
| |
| for (const PredicatePtr &operand : operands_) { |
| concretized_predicate->addPredicate( |
| operand->concretize(substitution_map)); |
| } |
| |
| return concretized_predicate.release(); |
| } |
| |
| void LogicalOr::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 { |
| if (!operands_.empty()) { |
| container_child_field_names->push_back(""); |
| container_child_fields->emplace_back(CastSharedPtrVector<OptimizerTreeBase>(operands_)); |
| } else { |
| inline_field_names->push_back("static_value"); |
| inline_field_values->push_back("false"); |
| } |
| } |
| |
| } // namespace expressions |
| } // namespace optimizer |
| } // namespace quickstep |