| /** |
| * 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/rules/CollapseProject.hpp" |
| |
| #include <memory> |
| |
| #include "query_optimizer/expressions/Alias.hpp" |
| #include "query_optimizer/expressions/AttributeReference.hpp" |
| #include "query_optimizer/expressions/BinaryExpression.hpp" |
| #include "query_optimizer/expressions/Expression.hpp" |
| #include "query_optimizer/expressions/ExpressionUtil.hpp" |
| #include "query_optimizer/expressions/NamedExpression.hpp" |
| #include "query_optimizer/expressions/ScalarLiteral.hpp" |
| #include "query_optimizer/logical/Project.hpp" |
| #include "query_optimizer/logical/TableReference.hpp" |
| #include "query_optimizer/rules/tests/LogicalRuleTest.hpp" |
| #include "query_optimizer/rules/tests/RuleTest.hpp" |
| #include "types/operations/binary_operations/BinaryOperation.hpp" |
| #include "types/operations/binary_operations/BinaryOperationFactory.hpp" |
| #include "types/operations/binary_operations/BinaryOperationID.hpp" |
| #include "utility/Macros.hpp" |
| |
| #include "glog/logging.h" |
| #include "gtest/gtest.h" |
| |
| namespace quickstep { |
| namespace optimizer { |
| |
| namespace E = ::quickstep::optimizer::expressions; |
| namespace L = ::quickstep::optimizer::logical; |
| |
| class CollapseProjectTest : public LogicalRuleTest { |
| protected: |
| CollapseProjectTest() {} |
| |
| ~CollapseProjectTest() override {} |
| |
| void setupRule(std::unique_ptr<Rule<L::Logical>> *rule) override { |
| rule->reset(new CollapseProject()); |
| } |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(CollapseProjectTest); |
| }; |
| |
| TEST_F(CollapseProjectTest, Tests) { |
| // Merge three-level Projects into one. |
| const E::ExpressionPtr alias_0_add_literal_0 = E::BinaryExpression::Create( |
| BinaryOperationFactory::GetBinaryOperation(BinaryOperationID::kAdd), |
| E::ToRef(alias_0_), |
| literal_0_); |
| const E::AliasPtr alias_on_alias_0_add_literal_0 = createAlias( |
| alias_0_add_literal_0, |
| "alias_alias_0_add_literal_0" /* attribute_name */, |
| "select_test_relation" /* relation_name */); |
| const L::ProjectPtr second_level_project = L::Project::Create( |
| logical_project_0_ /* first level project */, |
| {alias_on_alias_0_add_literal_0} /* project_expressions */); |
| const E::AliasPtr alias_on_alias_on_alias_0_add_literal_0 = createAlias( |
| E::ToRef(alias_on_alias_0_add_literal_0), |
| "alias_on_alias_on_alias_0_add_literal_0" /* attribute_name */, |
| "select_test_relation" /* relation_name */); |
| // The top level project. |
| input_ = L::Project::Create(second_level_project, |
| {alias_on_alias_on_alias_0_add_literal_0}); |
| |
| const E::ExpressionPtr alias_0_add_literal_0_after_pullup = |
| alias_0_add_literal_0->copyWithNewChildren( |
| {alias_0_->expression(), literal_0_} /* new_children */); |
| const E::AliasPtr alias_on_alias_on_alias_0_add_literal_0_after_pullup = |
| std::static_pointer_cast<const E::Alias>( |
| alias_on_alias_on_alias_0_add_literal_0->copyWithNewChildren( |
| {alias_0_add_literal_0_after_pullup} /* new_children */)); |
| expect_output_ = L::Project::Create( |
| logical_table_reference_0_, |
| {alias_on_alias_on_alias_0_add_literal_0_after_pullup} /* project_expressions */); |
| APPLY_RULE_AND_CHECK_OUTPUT(); |
| } |
| |
| } // namespace optimizer |
| } // namespace quickstep |