| /** |
| * 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_TABLE_REFERENCE_HPP_ |
| #define QUICKSTEP_PARSER_PARSE_TABLE_REFERENCE_HPP_ |
| |
| #include <memory> |
| #include <string> |
| #include <vector> |
| |
| #include "parser/ParseString.hpp" |
| #include "parser/ParseTreeNode.hpp" |
| #include "utility/Macros.hpp" |
| #include "utility/PtrList.hpp" |
| |
| namespace quickstep { |
| |
| /** \addtogroup Parser |
| * @{ |
| */ |
| |
| /** |
| * @brief A table signature for a derived or base table that represents |
| * the table alias (correlation name) and derived |
| * column alias list. |
| */ |
| class ParseTableReferenceSignature : public ParseTreeNode { |
| public: |
| /** |
| * @brief Constructor. Takes ownership of all pointers. |
| * |
| * @param line_number The line number of the first token of this node in the SQL statement. |
| * @param column_number The column number of the first token of this node in the SQL statement. |
| * @param table_alias The table alias. |
| * @param column_aliases The column names for the table. |
| */ |
| ParseTableReferenceSignature(const int line_number, |
| const int column_number, |
| ParseString *table_alias, |
| PtrList<ParseString> *column_aliases = nullptr) |
| : ParseTreeNode(line_number, column_number), |
| table_alias_(table_alias), |
| column_aliases_(column_aliases) { |
| } |
| |
| /** |
| * @brief Destructor. |
| */ |
| ~ParseTableReferenceSignature() override {} |
| |
| /** |
| * @return The table alias. |
| */ |
| const ParseString* table_alias() const { return table_alias_.get(); } |
| |
| /** |
| * @return The column aliases. |
| */ |
| const PtrList<ParseString>* column_aliases() const { return column_aliases_.get(); } |
| |
| std::string getName() const override { return "TableSignature"; } |
| |
| 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<ParseString> table_alias_; |
| std::unique_ptr<PtrList<ParseString>> column_aliases_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ParseTableReferenceSignature); |
| }; |
| |
| /** |
| * @brief Base class for a FROM-list table item, which may be a subquery expression or a simple table reference. |
| */ |
| class ParseTableReference : public ParseTreeNode { |
| public: |
| enum TableReferenceType { |
| kGeneratorTableReference, |
| kJoinedTableReference, |
| kSimpleTableReference, |
| kSubqueryTableReference |
| }; |
| |
| /** |
| * @brief Destructor. |
| */ |
| ~ParseTableReference() override {} |
| |
| /** |
| * @return The TableReferenceType of this table reference. |
| */ |
| virtual TableReferenceType getTableReferenceType() const = 0; |
| |
| /** |
| * @brief Sets the table reference signature which gives the table name and table column names that can be used |
| * to reference the table. |
| * @note Takes ownership of \p table_reference_signature. |
| * |
| * @param table_reference_signature The table reference signature. |
| */ |
| void set_table_reference_signature(ParseTableReferenceSignature* table_reference_signature) { |
| table_reference_signature_.reset(table_reference_signature); |
| } |
| |
| /** |
| * @return The table reference signature. |
| */ |
| const ParseTableReferenceSignature* table_reference_signature() const { |
| return table_reference_signature_.get(); |
| } |
| |
| protected: |
| ParseTableReference(const int line_number, const int column_number) |
| : ParseTreeNode(line_number, column_number) { |
| } |
| |
| 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<ParseTableReferenceSignature> table_reference_signature_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ParseTableReference); |
| }; |
| |
| /** @} */ |
| |
| } // namespace quickstep |
| |
| #endif // QUICKSTEP_PARSER_PARSE_TABLE_REFERENCE_HPP_ |