| /** |
| * 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. |
| **/ |
| |
| #ifndef QUICKSTEP_PARSER_PARSE_JOINED_TABLE_REFERENCE_HPP_ |
| #define QUICKSTEP_PARSER_PARSE_JOINED_TABLE_REFERENCE_HPP_ |
| |
| #include <memory> |
| #include <string> |
| #include <vector> |
| |
| #include "parser/ParsePredicate.hpp" |
| #include "parser/ParseTableReference.hpp" |
| #include "utility/Macros.hpp" |
| |
| namespace quickstep { |
| |
| class ParseTreeNode; |
| |
| /** \addtogroup Parser |
| * @{ |
| */ |
| |
| /** |
| * @brief Parsed representation of a joined table. |
| */ |
| class ParseJoinedTableReference : public ParseTableReference { |
| public: |
| enum class JoinType { |
| kInnerJoin = 0, |
| kLeftOuterJoin, |
| kRightOuterJoin, |
| kFullOuterJoin |
| }; |
| |
| /** |
| * @brief Constructor. |
| * |
| * @param line_number The line number of the token "JOIN" in the SQL statement. |
| * @param column_number The column number of the token "JOIN" in the SQL statement. |
| * @param join_type The join type. |
| * @param left_table The left-hand side table. |
| * @param right_table The right-hand side table. |
| * @param join_predicate The join predicate. |
| */ |
| ParseJoinedTableReference(const int line_number, |
| const int column_number, |
| const JoinType join_type, |
| ParseTableReference *left_table, |
| ParseTableReference *right_table, |
| ParsePredicate *join_predicate) |
| : ParseTableReference(line_number, column_number), |
| join_type_(join_type), |
| left_table_(left_table), |
| right_table_(right_table), |
| join_predicate_(join_predicate) { |
| } |
| |
| TableReferenceType getTableReferenceType() const override { |
| return kJoinedTableReference; |
| } |
| |
| std::string getName() const override { return "JoinedTable"; } |
| |
| /** |
| * @return The join type. |
| */ |
| JoinType join_type() const { |
| return join_type_; |
| } |
| |
| /** |
| * @return The left-side table. |
| */ |
| const ParseTableReference* left_table() const { |
| return left_table_.get(); |
| } |
| |
| /** |
| * @return The right-side table. |
| */ |
| const ParseTableReference* right_table() const { |
| return right_table_.get(); |
| } |
| |
| /** |
| * @return The join predicate. |
| */ |
| const ParsePredicate* join_predicate() const { |
| return join_predicate_.get(); |
| } |
| |
| protected: |
| void 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<const ParseTreeNode*> *non_container_child_fields, |
| std::vector<std::string> *container_child_field_names, |
| std::vector<std::vector<const ParseTreeNode*>> *container_child_fields) const override; |
| |
| private: |
| const JoinType join_type_; |
| std::unique_ptr<ParseTableReference> left_table_; |
| std::unique_ptr<ParseTableReference> right_table_; |
| std::unique_ptr<ParsePredicate> join_predicate_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ParseJoinedTableReference); |
| }; |
| |
| /** @} */ |
| |
| } // namespace quickstep |
| |
| #endif /* QUICKSTEP_PARSER_PARSE_JOINED_TABLE_REFERENCE_HPP_ */ |