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+/* 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