Code_query_filter.hpp
上传用户:romrleung
上传日期:2022-05-23
资源大小:18897k
文件大小:4k
源码类别:
MySQL数据库
开发平台:
Visual C++
- /* 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_query_filter_hpp
- #define ODBC_CODEGEN_Code_query_filter_hpp
- #include <common/common.hpp>
- #include "Code_query.hpp"
- #include "Code_table_list.hpp"
- #include "Code_pred.hpp"
- /**
- * @class Plan_query_filter
- * @brief Filter node in PlanTree
- */
- class Plan_query_filter : public Plan_query {
- public:
- Plan_query_filter(Plan_root* root);
- virtual ~Plan_query_filter();
- Plan_base* analyze(Ctx& ctx, Ctl& ctl);
- Exec_base* codegen(Ctx& ctx, Ctl& ctl);
- void print(Ctx& ctx);
- // children
- void setQuery(Plan_query* query);
- void setPred(Plan_pred* pred);
- protected:
- friend class Plan_select;
- friend class Plan_update;
- friend class Plan_delete;
- Plan_query* m_query;
- Plan_pred* m_pred;
- Plan_table* m_topTable; // top level table for interpreted progs
- };
- inline
- Plan_query_filter::Plan_query_filter(Plan_root* root) :
- Plan_query(root),
- m_query(0),
- m_pred(0),
- m_topTable(0)
- {
- }
- // children
- inline void
- Plan_query_filter::setQuery(Plan_query* query)
- {
- ctx_assert(query != 0);
- m_query = query;
- }
- inline void
- Plan_query_filter::setPred(Plan_pred* pred)
- {
- ctx_assert(pred != 0);
- m_pred = pred;
- }
- /**
- * @class Exec_query_filter
- * @brief Filter node in ExecTree
- */
- class Exec_query_filter : public Exec_query {
- public:
- class Code : public Exec_query::Code {
- public:
- Code(const SqlSpecs& sqlSpecs);
- virtual ~Code();
- protected:
- friend class Exec_query_filter;
- // sets reference to SqlSpecs from subquery
- };
- class Data : public Exec_query::Data {
- public:
- Data(Exec_query_filter* node, const SqlRow& sqlRow);
- virtual ~Data();
- protected:
- friend class Exec_query_filter;
- // sets reference to SqlRow from subquery
- };
- Exec_query_filter(Exec_root* root);
- virtual ~Exec_query_filter();
- void alloc(Ctx& ctx, Ctl& ctl);
- void execImpl(Ctx& ctx, Ctl& ctl);
- bool fetchImpl(Ctx& ctx, Ctl& ctl);
- void close(Ctx& ctx);
- void print(Ctx& ctx);
- // children
- const Code& getCode() const;
- Data& getData() const;
- void setQuery(Exec_query* query);
- void setPred(Exec_pred* pred);
- protected:
- Exec_query* m_query;
- Exec_pred* m_pred;
- };
- inline
- Exec_query_filter::Code::Code(const SqlSpecs& sqlSpecs) :
- Exec_query::Code(sqlSpecs)
- {
- }
- inline
- Exec_query_filter::Data::Data(Exec_query_filter* node, const SqlRow& sqlRow) :
- Exec_query::Data(node, sqlRow)
- {
- }
- inline
- Exec_query_filter::Exec_query_filter(Exec_root* root) :
- Exec_query(root),
- m_query(0),
- m_pred(0)
- {
- }
- // children
- inline const Exec_query_filter::Code&
- Exec_query_filter::getCode() const
- {
- const Code* code = static_cast<const Code*>(m_code);
- return *code;
- }
- inline Exec_query_filter::Data&
- Exec_query_filter::getData() const
- {
- Data* data = static_cast<Data*>(m_data);
- return *data;
- }
- inline void
- Exec_query_filter::setQuery(Exec_query* query)
- {
- ctx_assert(query != 0);
- m_query = query;
- }
- inline void
- Exec_query_filter::setPred(Exec_pred* pred)
- {
- ctx_assert(pred != 0);
- m_pred = pred;
- }
- #endif