| /** |
| * Copyright 2011-2015 Quickstep Technologies LLC. |
| * Copyright 2015 Pivotal Software, Inc. |
| * Copyright 2016, Quickstep Research Group, Computer Sciences Department, |
| * University of Wisconsin—Madison. |
| * |
| * Licensed 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/logical/Filter.hpp" |
| |
| #include <string> |
| #include <vector> |
| |
| #include "query_optimizer/OptimizerTree.hpp" |
| #include "query_optimizer/expressions/PatternMatcher.hpp" |
| #include "query_optimizer/expressions/Predicate.hpp" |
| #include "query_optimizer/logical/PatternMatcher.hpp" |
| |
| #include "glog/logging.h" |
| |
| namespace quickstep { |
| namespace optimizer { |
| namespace logical { |
| |
| namespace E = ::quickstep::optimizer::expressions; |
| |
| Filter::Filter(const LogicalPtr &input, |
| const E::PredicatePtr &filter_predicate) { |
| FilterPtr child_filter; |
| LogicalPtr flattened_input; |
| |
| // Flatten the Filer on top of another Filter |
| if (SomeFilter::MatchesWithConditionalCast(input, &child_filter)) { |
| flattened_input = child_filter->input(); |
| filter_predicate_ = E::LogicalAnd::Create( |
| {filter_predicate, child_filter->filter_predicate()} /* operands */); |
| } else { |
| flattened_input = input; |
| filter_predicate_ = filter_predicate; |
| } |
| addChild(flattened_input); |
| addInputExpression(filter_predicate_); |
| } |
| |
| LogicalPtr Filter::copyWithNewInputExpressions( |
| const std::vector<expressions::ExpressionPtr> &input_expressions) const { |
| DCHECK_EQ(1u, input_expressions.size()); |
| |
| E::PredicatePtr new_filter_predicate; |
| E::SomePredicate::MatchesWithConditionalCast(input_expressions[0], &new_filter_predicate); |
| DCHECK(new_filter_predicate != nullptr); |
| |
| return Create(children()[0], new_filter_predicate); |
| } |
| |
| void Filter::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("input"); |
| non_container_child_field_names->push_back("filter_predicate"); |
| |
| non_container_child_fields->push_back(input()); |
| non_container_child_fields->push_back(filter_predicate_); |
| } |
| |
| } // namespace logical |
| } // namespace optimizer |
| } // namespace quickstep |