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Diffstat (limited to 'storage/ndb/src/old_files/client/odbc/codegen/Code_comp_op.hpp')
| -rw-r--r-- | storage/ndb/src/old_files/client/odbc/codegen/Code_comp_op.hpp | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/storage/ndb/src/old_files/client/odbc/codegen/Code_comp_op.hpp b/storage/ndb/src/old_files/client/odbc/codegen/Code_comp_op.hpp new file mode 100644 index 00000000000..0585ab1dabf --- /dev/null +++ b/storage/ndb/src/old_files/client/odbc/codegen/Code_comp_op.hpp @@ -0,0 +1,172 @@ +/* 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 |