Initial revision of NDB Cluster files

1 files changed, 155 insertions, 0 deletions

diff --git a/ndb/src/client/odbc/codegen/Code_query.hpp b/ndb/src/client/odbc/codegen/Code_query.hpp
new file mode 100644
index 00000000000..97f98f859ff
--- /dev/null
+++ b/ndb/src/client/odbc/codegen/Code_query.hpp
@@ -0,0 +1,155 @@
+/* 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_hpp
+#define ODBC_CODEGEN_Code_query_hpp
+
+#include <common/common.hpp>
+#include <common/DataRow.hpp>
+#include <common/ResultArea.hpp>
+#include "Code_stmt.hpp"
+
+class Plan_expr_row;
+class Plan_table;
+class Exec_expr_row;
+
+/**
+ * @class Plan_query
+ * @brief Base class for queries in PlanTree
+ */
+class Plan_query : public Plan_stmt {
+public:
+    Plan_query(Plan_root* root);
+    virtual ~Plan_query() = 0;
+    void describe(Ctx& ctx);
+    virtual Plan_expr_row* getRow();
+};
+
+inline
+Plan_query::Plan_query(Plan_root* root) :
+    Plan_stmt(root)
+{
+}
+
+/**
+ * @class Exec_query
+ * @brief Base class for executable queries.
+ *
+ * Executable queriable statement.
+ */
+class Exec_query : public Exec_stmt {
+public:
+    class Code : public Exec_stmt::Code {
+    public:
+	Code(const SqlSpecs& sqlSpecs);
+	virtual ~Code() = 0;
+	const SqlSpecs& sqlSpecs() const;
+    protected:
+	friend class Exec_query;
+	const SqlSpecs& m_sqlSpecs;	// subclass must contain
+    };
+    class Data : public Exec_stmt::Data, public ResultSet {
+    public:
+	Data(Exec_query* node, const SqlRow& sqlRow);
+	virtual ~Data() = 0;
+	const SqlRow& sqlRow() const;
+	ExtRow* extRow() const;
+	bool fetchImpl(Ctx& ctx, Ctl& ctl);
+    protected:
+	friend class Exec_query;
+	Exec_query* const m_node;
+	ExtRow* m_extRow;		// output bindings
+	int* m_extPos;			// positions for SQLGetData
+    };
+    Exec_query(Exec_root* root);
+    virtual ~Exec_query() = 0;
+    void bind(Ctx& ctx);
+    void execute(Ctx& ctx, Ctl& ctl);
+    bool fetch(Ctx& ctx, Ctl& ctl);
+    // children
+    const Code& getCode() const;
+    Data& getData() const;
+    virtual const Exec_query* getRawQuery() const;
+    // odbc support
+    void sqlGetData(Ctx& ctx, SQLUSMALLINT columnNumber, SQLSMALLINT targetType, SQLPOINTER targetValue, SQLINTEGER bufferLength, SQLINTEGER* strlen_or_Ind);
+protected:
+    friend class Data;
+    virtual void execImpl(Ctx& ctx, Ctl& ctl) = 0;
+    virtual bool fetchImpl(Ctx& ctx, Ctl& ctl) = 0;
+};
+
+inline
+Exec_query::Code::Code(const SqlSpecs& sqlSpecs) :
+    m_sqlSpecs(sqlSpecs)
+{
+}
+
+inline const SqlSpecs&
+Exec_query::Code::sqlSpecs() const
+{
+    return m_sqlSpecs;
+}
+
+inline
+Exec_query::Data::Data(Exec_query* node, const SqlRow& sqlRow) :
+    ResultSet(sqlRow),
+    m_node(node),
+    m_extRow(0),
+    m_extPos(0)
+{
+}
+
+inline const SqlRow&
+Exec_query::Data::sqlRow() const
+{
+    return static_cast<const SqlRow&>(m_dataRow);
+}
+
+inline ExtRow*
+Exec_query::Data::extRow() const
+{
+    return m_extRow;
+}
+
+inline bool
+Exec_query::Data::fetchImpl(Ctx& ctx, Ctl& ctl)
+{
+    return m_node->fetchImpl(ctx, ctl);
+}
+
+inline
+Exec_query::Exec_query(Exec_root* root) :
+    Exec_stmt(root)
+{
+}
+
+// children
+
+inline const Exec_query::Code&
+Exec_query::getCode() const
+{
+    const Code* code = static_cast<const Code*>(m_code);
+    return *code;
+}
+
+inline Exec_query::Data&
+Exec_query::getData() const
+{
+    Data* data = static_cast<Data*>(m_data);
+    return *data;
+}
+
+#endif