Code_root.hpp
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上传日期:2022-05-23
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- /* Copyright (C) 2003 MySQL AB
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
- #ifndef ODBC_CODEGEN_Code_root_hpp
- #define ODBC_CODEGEN_Code_root_hpp
- #include <list>
- #include <common/common.hpp>
- #include "Code_base.hpp"
- #include "Code_stmt.hpp"
- class SqlField;
- class ExtField;
- /**
- * @class Plan_root
- * @brief Root node above top level statement node
- */
- class Plan_root : public Plan_base {
- public:
- Plan_root(StmtArea& stmtArea);
- virtual ~Plan_root();
- Plan_base* analyze(Ctx& ctx, Ctl& ctl);
- void describe(Ctx& ctx);
- Exec_base* codegen(Ctx& ctx, Ctl& ctl);
- void print(Ctx& ctx);
- // children
- void setStmt(Plan_stmt* stmt);
- // save and free nodes
- void saveNode(Plan_base* node);
- void freeNodeList();
- private:
- friend class CodeGen;
- friend class Plan_base;
- friend class Plan_expr_param;
- StmtArea& m_stmtArea;
- Plan_stmt* m_stmt;
- ParamVector m_paramList;
- typedef std::list<Plan_base*> NodeList;
- NodeList m_nodeList;
- };
- inline
- Plan_root::Plan_root(StmtArea& stmtArea) :
- Plan_base(this),
- m_stmtArea(stmtArea),
- m_stmt(0)
- {
- }
- inline void
- Plan_root::setStmt(Plan_stmt* stmt)
- {
- ctx_assert(stmt != 0);
- m_stmt = stmt;
- }
- /**
- * @class Exec_root
- * @brief Root node above top level statement node
- */
- class Exec_root : public Exec_base {
- public:
- class Code : public Exec_base::Code {
- public:
- Code();
- virtual ~Code();
- };
- class Data : public Exec_base::Data {
- public:
- Data();
- virtual ~Data();
- };
- Exec_root(StmtArea& stmtArea);
- virtual ~Exec_root();
- StmtArea& stmtArea() const;
- void alloc(Ctx& ctx, Ctl& ctl);
- void bind(Ctx& ctx);
- void execute(Ctx& ctx, Ctl& ctl);
- void fetch(Ctx& ctx, Ctl& ctl);
- void close(Ctx& ctx);
- void print(Ctx& ctx);
- // children
- const Code& getCode() const;
- Data& getData() const;
- void setStmt(Exec_stmt* stmt);
- // save and free nodes
- void saveNode(Exec_base* node);
- void freeNodeList();
- // odbc support
- void sqlGetData(Ctx& ctx, SQLUSMALLINT columnNumber, SQLSMALLINT targetType, SQLPOINTER targetValue, SQLINTEGER bufferLength, SQLINTEGER* strlen_or_Ind);
- void sqlParamData(Ctx& ctx, SQLPOINTER* value);
- void sqlPutData(Ctx& ctx, SQLPOINTER data, SQLINTEGER strlen_or_Ind);
- private:
- friend class Plan_root;
- friend class Exec_base;
- friend class CodeGen;
- StmtArea& m_stmtArea;
- Exec_stmt* m_stmt;
- ParamVector m_paramList;
- unsigned m_paramData; // position of SQLParamData
- typedef std::list<Exec_base*> NodeList;
- NodeList m_nodeList;
- };
- inline
- Exec_root::Code::Code()
- {
- }
- inline
- Exec_root::Data::Data()
- {
- }
- inline
- Exec_root::Exec_root(StmtArea& stmtArea) :
- Exec_base(this),
- m_stmtArea(stmtArea),
- m_stmt(0),
- m_paramData(0)
- {
- }
- // children
- inline const Exec_root::Code&
- Exec_root::getCode() const
- {
- const Code* code = static_cast<const Code*>(m_code);
- return *code;
- }
- inline Exec_root::Data&
- Exec_root::getData() const
- {
- Data* data = static_cast<Data*>(m_data);
- return *data;
- }
- inline void
- Exec_root::setStmt(Exec_stmt* stmt)
- {
- ctx_assert(stmt != 0);
- m_stmt = stmt;
- m_stmt->m_topLevel = true;
- }
- #endif