| /** |
| * 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. |
| **/ |
| |
| #ifndef QUICKSTEP_PARSER_PARSE_SUBQUERY_EXPRESSION_HPP_ |
| #define QUICKSTEP_PARSER_PARSE_SUBQUERY_EXPRESSION_HPP_ |
| |
| #include <memory> |
| #include <string> |
| #include <vector> |
| |
| #include "parser/ParseExpression.hpp" |
| #include "parser/ParseSelect.hpp" |
| #include "utility/Macros.hpp" |
| |
| namespace quickstep { |
| |
| class ParseTreeNode; |
| |
| /** \addtogroup Parser |
| * @{ |
| */ |
| |
| /** |
| * @brief Parsed representation of a subquery expression. |
| */ |
| class ParseSubqueryExpression : public ParseExpression { |
| public: |
| /** |
| * @brief Constructor. Takes ownership of \p query. |
| * |
| * @param line_number The line number of the beginning of the subquery expression. |
| * @param column_number The column number of the beginning of the subquery expression. |
| * @param query The SELECT subquery. |
| */ |
| ParseSubqueryExpression(const int line_number, |
| const int column_number, |
| ParseSelect *query) |
| : ParseExpression(line_number, column_number), |
| query_(query) { |
| } |
| |
| ~ParseSubqueryExpression() override { |
| } |
| |
| ExpressionType getExpressionType() const override { |
| return kSubqueryExpression; |
| } |
| |
| /** |
| * @return The SELECT subquery. |
| */ |
| const ParseSelect* query() const { return query_.get(); } |
| |
| std::string getName() const override { return "SubqueryExpression"; } |
| |
| std::string generateName() const override; |
| |
| 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: |
| std::unique_ptr<ParseSelect> query_; |
| DISALLOW_COPY_AND_ASSIGN(ParseSubqueryExpression); |
| }; |
| |
| /** @} */ |
| |
| } // namespace quickstep |
| |
| #endif /* QUICKSTEP_PARSER_PARSE_SUBQUERY_EXPRESSION_HPP_ */ |