From 5b3aec2b904a2eb7478240dac2f56d8928fc2362 Mon Sep 17 00:00:00 2001 From: "magnus@neptunus.(none)" <> Date: Wed, 14 Apr 2004 10:53:21 +0200 Subject: Initial revision of NDB Cluster files --- ndb/src/client/odbc/codegen/Code_expr_conv.hpp | 141 +++++++++++++++++++++++++ 1 file changed, 141 insertions(+) create mode 100644 ndb/src/client/odbc/codegen/Code_expr_conv.hpp (limited to 'ndb/src/client/odbc/codegen/Code_expr_conv.hpp') diff --git a/ndb/src/client/odbc/codegen/Code_expr_conv.hpp b/ndb/src/client/odbc/codegen/Code_expr_conv.hpp new file mode 100644 index 00000000000..3294960c7b3 --- /dev/null +++ b/ndb/src/client/odbc/codegen/Code_expr_conv.hpp @@ -0,0 +1,141 @@ +/* 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_expr_conv_hpp +#define ODBC_CODEGEN_Code_expr_conv_hpp + +#include +#include +#include "Code_expr.hpp" + +/** + * @class Plan_expr_conv + * @brief Data type conversion in PlanTree + * + * Inserted to convert value to another compatible type. + */ +class Plan_expr_conv : public Plan_expr { +public: + Plan_expr_conv(Plan_root* root, const SqlType& sqlType); + virtual ~Plan_expr_conv(); + Plan_base* analyze(Ctx& ctx, Ctl& ctl); + Exec_base* codegen(Ctx& ctx, Ctl& ctl); + void print(Ctx& ctx); + bool isEqual(const Plan_expr* expr) const; + bool isGroupBy(const Plan_expr_row* row) const; + // children + void setExpr(Plan_expr* expr); +protected: + Plan_expr* m_expr; +}; + +inline +Plan_expr_conv::Plan_expr_conv(Plan_root* root, const SqlType& sqlType) : + Plan_expr(root, TypeConv), + m_expr(0) +{ + ctx_assert(sqlType.type() != SqlType::Undef); + m_sqlType = sqlType; +} + +inline void +Plan_expr_conv::setExpr(Plan_expr* expr) +{ + ctx_assert(expr != 0); + m_expr = expr; +} + +/** + * @class Exec_expr_conv + * @brief Data type conversion in ExecTree + */ +class Exec_expr_conv : public Exec_expr { +public: + class Code : public Exec_expr::Code { + public: + Code(const SqlSpec& spec); + virtual ~Code(); + protected: + friend class Exec_expr_conv; + const SqlSpec m_sqlSpec; + }; + class Data : public Exec_expr::Data { + public: + Data(const SqlField& sqlField); + virtual ~Data(); + protected: + friend class Exec_expr_conv; + SqlField m_sqlField; + }; + Exec_expr_conv(Exec_root* root); + virtual ~Exec_expr_conv(); + void alloc(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(Exec_expr* expr); +protected: + Exec_expr* m_expr; +}; + +inline +Exec_expr_conv::Code::Code(const SqlSpec& sqlSpec) : + Exec_expr::Code(m_sqlSpec), + m_sqlSpec(sqlSpec) +{ +} + +inline +Exec_expr_conv::Data::Data(const SqlField& sqlField) : + Exec_expr::Data(m_sqlField), + m_sqlField(sqlField) +{ +} + +inline +Exec_expr_conv::Exec_expr_conv(Exec_root* root) : + Exec_expr(root), + m_expr(0) +{ +} + +// children + +inline const Exec_expr_conv::Code& +Exec_expr_conv::getCode() const +{ + const Code* code = static_cast(m_code); + return *code; +} + +inline Exec_expr_conv::Data& +Exec_expr_conv::getData() const +{ + Data* data = static_cast(m_data); + return *data; +} + +inline void +Exec_expr_conv::setExpr(Exec_expr* expr) +{ + ctx_assert(m_expr == 0 && expr != 0); + m_expr = expr; +} + +#endif -- cgit v1.2.1