Code/Resource
Windows Develop
Linux-Unix program
Internet-Socket-Network
Web Server
Browser Client
Ftp Server
Ftp Client
Browser Plugins
Proxy Server
Email Server
Email Client
WEB Mail
Firewall-Security
Telnet Server
Telnet Client
ICQ-IM-Chat
Search Engine
Sniffer Package capture
Remote Control
xml-soap-webservice
P2P
WEB(ASP,PHP,...)
TCP/IP Stack
SNMP
Grid Computing
SilverLight
DNS
Cluster Service
Network Security
Communication-Mobile
Game Program
Editor
Multimedia program
Graph program
Compiler program
Compress-Decompress algrithms
Crypt_Decrypt algrithms
Mathimatics-Numerical algorithms
MultiLanguage
Disk/Storage
Java Develop
assembly language
Applications
Other systems
Database system
Embeded-SCM Develop
FlashMX/Flex
source in ebook
Delphi VCL
OS Develop
MiddleWare
MPI
MacOS develop
LabView
ELanguage
Software/Tools
E-Books
Artical/Document
Code_comp_op.hpp
Package: mysql-4.1.16-win-src.zip [view]
Upload User: romrleung
Upload Date: 2022-05-23
Package Size: 18897k
Code Size: 4k
Category:
MySQL
Development Platform:
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_comp_op_hpp
- #define ODBC_CODEGEN_Code_comp_op_hpp
- #include <common/common.hpp>
- #include <common/DataField.hpp>
- #include "Code_pred.hpp"
- #include "Code_expr.hpp"
- #include "Code_expr_column.hpp"
- /**
- * @class Comp_op
- * @brief Comparison operations
- */
- struct Comp_op {
- enum Opcode {
- Eq = 1, // binary
- Noteq,
- Lt,
- Lteq,
- Gt,
- Gteq,
- Like,
- Notlike,
- Isnull, // unary
- Isnotnull
- };
- Comp_op(Opcode opcode);
- const char* name() const;
- unsigned arity() const;
- Opcode m_opcode;
- };
- inline
- Comp_op::Comp_op(Opcode opcode) :
- m_opcode(opcode)
- {
- }
- /**
- * @class Plan_comp_op
- * @brief Comparison operator node in PlanTree
- */
- class Plan_comp_op : public Plan_pred {
- public:
- Plan_comp_op(Plan_root* root, Comp_op op);
- virtual ~Plan_comp_op();
- void setExpr(unsigned i, Plan_expr* expr);
- Plan_base* analyze(Ctx& ctx, Ctl& ctl);
- Exec_base* codegen(Ctx& ctx, Ctl& ctl);
- void print(Ctx& ctx);
- virtual bool isGroupBy(const Plan_expr_row* row) const;
- protected:
- Comp_op m_op;
- Plan_expr* m_expr[1 + 2];
- Plan_expr_column* m_interpColumn[1 + 2]; // candidates
- };
- inline
- Plan_comp_op::Plan_comp_op(Plan_root* root, Comp_op op) :
- Plan_pred(root, TypeComp),
- m_op(op)
- {
- m_expr[0] = m_expr[1] = m_expr[2] = 0;
- m_interpColumn[0] = m_interpColumn[1] = m_interpColumn[2] = 0;
- }
- inline void
- Plan_comp_op::setExpr(unsigned i, Plan_expr* expr)
- {
- ctx_assert(1 <= i && i <= 2);
- m_expr[i] = expr;
- }
- /**
- * @class Exec_comp_op
- * @brief Comparison operator node in ExecTree
- */
- class Exec_comp_op : public Exec_pred {
- public:
- class Code : public Exec_pred::Code {
- public:
- Code(Comp_op op);
- virtual ~Code();
- protected:
- friend class Plan_comp_op;
- friend class Exec_comp_op;
- Comp_op m_op;
- unsigned m_interpColumn; // 1 or 2 if interpreted column, 0 if both constant
- NdbAttrId m_interpAttrId;
- };
- class Data : public Exec_pred::Data {
- public:
- Data();
- virtual ~Data();
- protected:
- friend class Exec_comp_op;
- };
- Exec_comp_op(Exec_root* root);
- virtual ~Exec_comp_op();
- void alloc(Ctx& ctx, Ctl& ctl);
- void execInterp(Ctx& ctx, Ctl& ctl);
- void evaluate(Ctx& ctx, Ctl& ctl);
- void close(Ctx& ctx);
- void print(Ctx& ctx);
- // children
- const Code& getCode() const;
- Data& getData() const;
- void setExpr(unsigned i, Exec_expr* expr);
- protected:
- Exec_expr* m_expr[1 + 2];
- };
- inline
- Exec_comp_op::Code::Code(Comp_op op) :
- m_op(op),
- m_interpColumn(0),
- m_interpAttrId((NdbAttrId)-1)
- {
- }
- inline
- Exec_comp_op::Data::Data()
- {
- }
- inline
- Exec_comp_op::Exec_comp_op(Exec_root* root) :
- Exec_pred(root)
- {
- m_expr[0] = m_expr[1] = m_expr[2] = 0;
- }
- // children
- inline const Exec_comp_op::Code&
- Exec_comp_op::getCode() const
- {
- const Code* code = static_cast<const Code*>(m_code);
- return *code;
- }
- inline Exec_comp_op::Data&
- Exec_comp_op::getData() const
- {
- Data* data = static_cast<Data*>(m_data);
- return *data;
- }
- inline void
- Exec_comp_op::setExpr(unsigned i, Exec_expr* expr)
- {
- ctx_assert(1 <= i && i <= 2 && m_expr[i] == 0);
- m_expr[i] = expr;
- }
- #endif