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Diffstat (limited to 'ndb/src/old_files/client/odbc/codegen/Code_query_distinct.hpp')
| -rw-r--r-- | ndb/src/old_files/client/odbc/codegen/Code_query_distinct.hpp | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/ndb/src/old_files/client/odbc/codegen/Code_query_distinct.hpp b/ndb/src/old_files/client/odbc/codegen/Code_query_distinct.hpp deleted file mode 100644 index 62c46bda901..00000000000 --- a/ndb/src/old_files/client/odbc/codegen/Code_query_distinct.hpp +++ /dev/null @@ -1,165 +0,0 @@ -/* 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_distinct_hpp -#define ODBC_CODEGEN_Code_query_distinct_hpp - -#include <functional> -#include <common/common.hpp> -#include "Code_query.hpp" -#include "Code_expr_row.hpp" -#include "Code_pred.hpp" - -/** - * @class Plan_query_distinct - * @brief Group-by node in PlanTree - */ -class Plan_query_distinct : public Plan_query { -public: - Plan_query_distinct(Plan_root* root); - virtual ~Plan_query_distinct(); - Plan_base* analyze(Ctx& ctx, Ctl& ctl); - Exec_base* codegen(Ctx& ctx, Ctl& ctl); - void print(Ctx& ctx); - // children - void setQuery(Plan_query* query); - Plan_expr_row* getRow(); -protected: - Plan_query* m_query; -}; - -inline -Plan_query_distinct::Plan_query_distinct(Plan_root* root) : - Plan_query(root), - m_query(0) -{ -} - -// children - -inline void -Plan_query_distinct::setQuery(Plan_query* query) -{ - ctx_assert(query != 0); - m_query = query; -} - -/** - * Distinct preserves order of input rows so we use 2 data structures: - * map<row> = index and vector<index> = row (index >= 0). - */ - -class Exec_query_distinct; - -struct DistinctLess : std::binary_function<const SqlRow*, const SqlRow*, bool> { - bool operator()(const SqlRow* s1, const SqlRow* s2) const; -}; - -typedef std::map<const SqlRow*, unsigned, DistinctLess> DistinctList; - -typedef std::vector<const SqlRow*> DistinctVector; - -/** - * @class Exec_query_distinct - * @brief Group-by node in ExecTree - */ -class Exec_query_distinct : public Exec_query { -public: - class Code : public Exec_query::Code { - public: - Code(const SqlSpecs& sqlSpecs); - virtual ~Code(); - protected: - friend class Exec_query_distinct; - // sets reference to Sqlspecs from subquery - }; - class Data : public Exec_query::Data { - public: - Data(Exec_query_distinct* node, const SqlSpecs& sqlSpecs); - virtual ~Data(); - protected: - friend class Exec_query_distinct; - SqlRow m_sqlRow; // current row - bool m_grouped; // fetch and group-by done - unsigned m_count; - DistinctList m_groupList; - DistinctVector m_groupVector; - unsigned m_index; - }; - Exec_query_distinct(Exec_root* root); - virtual ~Exec_query_distinct(); - 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); - const Exec_query* getRawQuery() const; -protected: - friend class Exec_query; - Exec_query* m_query; -}; - -inline -Exec_query_distinct::Code::Code(const SqlSpecs& sqlSpecs) : - Exec_query::Code(sqlSpecs) -{ -} - -inline -Exec_query_distinct::Data::Data(Exec_query_distinct* node, const SqlSpecs& sqlSpecs) : - Exec_query::Data(node, m_sqlRow), - m_sqlRow(sqlSpecs), - m_grouped(false), - m_count(0), - m_index(0) -{ -} - -inline -Exec_query_distinct::Exec_query_distinct(Exec_root* root) : - Exec_query(root), - m_query(0) -{ -} - -// children - -inline const Exec_query_distinct::Code& -Exec_query_distinct::getCode() const -{ - const Code* code = static_cast<const Code*>(m_code); - return *code; -} - -inline Exec_query_distinct::Data& -Exec_query_distinct::getData() const -{ - Data* data = static_cast<Data*>(m_data); - return *data; -} - -inline void -Exec_query_distinct::setQuery(Exec_query* query) -{ - ctx_assert(m_query == 0 && query != 0); - m_query = query; -} - -#endif |