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Diffstat (limited to 'ndb/src/client/odbc/codegen/Code_query_range.hpp')
| -rw-r--r-- | ndb/src/client/odbc/codegen/Code_query_range.hpp | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/ndb/src/client/odbc/codegen/Code_query_range.hpp b/ndb/src/client/odbc/codegen/Code_query_range.hpp new file mode 100644 index 00000000000..4438189522c --- /dev/null +++ b/ndb/src/client/odbc/codegen/Code_query_range.hpp @@ -0,0 +1,186 @@ +/* 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_range_hpp +#define ODBC_CODEGEN_Code_query_range_hpp + +#include <common/common.hpp> +#include "Code_query.hpp" +#include "Code_table.hpp" +#include "Code_pred.hpp" + +class Ctx; +class StmtArea; +class NdbConnection; +class NdbOperation; +class NdbRecAttr; + +/* + * Range scan via ordered index. We implement only the case of equality + * on an initial sequence of index keys. + */ + +class Plan_query_range : public Plan_query { +public: + Plan_query_range(Plan_root* root); + virtual ~Plan_query_range(); + Plan_base* analyze(Ctx& ctx, Ctl& ctl); + Exec_base* codegen(Ctx& ctx, Ctl& ctl); + void print(Ctx& ctx); + void setTable(Plan_table* table, Plan_table::Index* index); + void setInterp(Plan_pred* interp); + void setExclusive(); +protected: + Plan_table* m_table; + Plan_table::Index* m_index; + Plan_pred* m_interp; + bool m_exclusive; +}; + +inline +Plan_query_range::Plan_query_range(Plan_root* root) : + Plan_query(root), + m_table(0), + m_index(0), + m_interp(0), + m_exclusive(false) +{ +} + +inline void +Plan_query_range::setTable(Plan_table* table, Plan_table::Index* index) +{ + ctx_assert(table != 0 && index != 0 && index == &table->m_indexList[index->m_pos] && index->m_pos != 0); + m_table = table; + m_index = index; +} + +inline void +Plan_query_range::setInterp(Plan_pred* interp) +{ + ctx_assert(interp != 0); + m_interp = interp; +} + +inline void +Plan_query_range::setExclusive() +{ + m_exclusive = true; +} + +class Exec_query_range : public Exec_query { +public: + class Code : public Exec_query::Code { + public: + Code(unsigned keyCount, unsigned attrCount); + virtual ~Code(); + protected: + friend class Plan_query_range; + friend class Exec_query_range; + const char* m_tableName; + const char* m_indexName; + unsigned m_keyCount; + SqlSpecs m_keySpecs; // key types + NdbAttrId* m_keyId; + Exec_expr** m_keyMatch; // XXX pointers for now + unsigned m_attrCount; + SqlSpecs m_sqlSpecs; + NdbAttrId* m_attrId; + bool m_exclusive; + }; + class Data : public Exec_query::Data { + public: + Data(Exec_query_range* node, const SqlSpecs& sqlSpecs); + virtual ~Data(); + protected: + friend class Exec_query_range; + SqlRow m_sqlRow; + NdbConnection* m_con; + NdbOperation* m_op; + NdbRecAttr** m_recAttr; + unsigned m_parallel; + bool m_done; // if no match possible due to range + }; + Exec_query_range(Exec_root* root); + virtual ~Exec_query_range(); + 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); + const Code& getCode() const; + Data& getData() const; + void setInterp(Exec_pred* interp); +protected: + Exec_pred* m_interp; +}; + +inline +Exec_query_range::Code::Code(unsigned keyCount, unsigned attrCount) : + Exec_query::Code(m_sqlSpecs), + m_tableName(0), + m_indexName(0), + m_keyCount(keyCount), + m_keySpecs(keyCount), + m_keyId(0), + m_attrCount(attrCount), + m_sqlSpecs(attrCount), + m_attrId(0), + m_exclusive(false) +{ +} + +inline +Exec_query_range::Data::Data(Exec_query_range* node, const SqlSpecs& sqlSpecs) : + Exec_query::Data(node, m_sqlRow), + m_sqlRow(sqlSpecs), + m_con(0), + m_op(0), + m_recAttr(0), + m_parallel(1), + m_done(false) +{ +} + +inline +Exec_query_range::Exec_query_range(Exec_root* root) : + Exec_query(root), + m_interp(0) +{ +} + +inline const Exec_query_range::Code& +Exec_query_range::getCode() const +{ + const Code* code = static_cast<const Code*>(m_code); + return *code; +} + +inline Exec_query_range::Data& +Exec_query_range::getData() const +{ + Data* data = static_cast<Data*>(m_data); + return *data; +} + +inline void +Exec_query_range::setInterp(Exec_pred* interp) +{ + ctx_assert(interp != 0); + m_interp = interp; +} + +#endif |