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+/*
+ * Copyright (C) 2008-2015 TrinityCore <http://www.trinitycore.org/>
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _PREPAREDSTATEMENT_H
+#define _PREPAREDSTATEMENT_H
+
+#include <future>
+#include "SQLOperation.h"
+
+#ifdef __APPLE__
+#undef TYPE_BOOL
+#endif
+
+//- Union for data buffer (upper-level bind -> queue -> lower-level bind)
+union PreparedStatementDataUnion
+{
+ bool boolean;
+ uint8 ui8;
+ int8 i8;
+ uint16 ui16;
+ int16 i16;
+ uint32 ui32;
+ int32 i32;
+ uint64 ui64;
+ int64 i64;
+ float f;
+ double d;
+};
+
+//- This enum helps us differ data held in above union
+enum PreparedStatementValueType
+{
+ TYPE_BOOL,
+ TYPE_UI8,
+ TYPE_UI16,
+ TYPE_UI32,
+ TYPE_UI64,
+ TYPE_I8,
+ TYPE_I16,
+ TYPE_I32,
+ TYPE_I64,
+ TYPE_FLOAT,
+ TYPE_DOUBLE,
+ TYPE_STRING,
+ TYPE_NULL
+};
+
+struct PreparedStatementData
+{
+ PreparedStatementDataUnion data;
+ PreparedStatementValueType type;
+ std::string str;
+};
+
+//- Forward declare
+class MySQLPreparedStatement;
+
+//- Upper-level class that is used in code
+class PreparedStatement
+{
+ friend class PreparedStatementTask;
+ friend class MySQLPreparedStatement;
+ friend class MySQLConnection;
+
+ public:
+ explicit PreparedStatement(uint32 index);
+ ~PreparedStatement();
+
+ void setBool(const uint8 index, const bool value);
+ void setUInt8(const uint8 index, const uint8 value);
+ void setUInt16(const uint8 index, const uint16 value);
+ void setUInt32(const uint8 index, const uint32 value);
+ void setUInt64(const uint8 index, const uint64 value);
+ void setInt8(const uint8 index, const int8 value);
+ void setInt16(const uint8 index, const int16 value);
+ void setInt32(const uint8 index, const int32 value);
+ void setInt64(const uint8 index, const int64 value);
+ void setFloat(const uint8 index, const float value);
+ void setDouble(const uint8 index, const double value);
+ void setString(const uint8 index, const std::string& value);
+ void setNull(const uint8 index);
+
+ protected:
+ void BindParameters();
+
+ protected:
+ MySQLPreparedStatement* m_stmt;
+ uint32 m_index;
+ std::vector<PreparedStatementData> statement_data; //- Buffer of parameters, not tied to MySQL in any way yet
+
+ PreparedStatement(PreparedStatement const& right) = delete;
+ PreparedStatement& operator=(PreparedStatement const& right) = delete;
+};
+
+//- Class of which the instances are unique per MySQLConnection
+//- access to these class objects is only done when a prepared statement task
+//- is executed.
+class MySQLPreparedStatement
+{
+ friend class MySQLConnection;
+ friend class PreparedStatement;
+
+ public:
+ MySQLPreparedStatement(MYSQL_STMT* stmt);
+ ~MySQLPreparedStatement();
+
+ void setBool(const uint8 index, const bool value);
+ void setUInt8(const uint8 index, const uint8 value);
+ void setUInt16(const uint8 index, const uint16 value);
+ void setUInt32(const uint8 index, const uint32 value);
+ void setUInt64(const uint8 index, const uint64 value);
+ void setInt8(const uint8 index, const int8 value);
+ void setInt16(const uint8 index, const int16 value);
+ void setInt32(const uint8 index, const int32 value);
+ void setInt64(const uint8 index, const int64 value);
+ void setFloat(const uint8 index, const float value);
+ void setDouble(const uint8 index, const double value);
+ void setString(const uint8 index, const char* value);
+ void setNull(const uint8 index);
+
+ protected:
+ MYSQL_STMT* GetSTMT() { return m_Mstmt; }
+ MYSQL_BIND* GetBind() { return m_bind; }
+ PreparedStatement* m_stmt;
+ void ClearParameters();
+ bool CheckValidIndex(uint8 index);
+ std::string getQueryString(std::string const& sqlPattern) const;
+
+ private:
+ void setValue(MYSQL_BIND* param, enum_field_types type, const void* value, uint32 len, bool isUnsigned);
+
+ private:
+ MYSQL_STMT* m_Mstmt;
+ uint32 m_paramCount;
+ std::vector<bool> m_paramsSet;
+ MYSQL_BIND* m_bind;
+
+ MySQLPreparedStatement(MySQLPreparedStatement const& right) = delete;
+ MySQLPreparedStatement& operator=(MySQLPreparedStatement const& right) = delete;
+};
+
+typedef std::future<PreparedQueryResult> PreparedQueryResultFuture;
+typedef std::promise<PreparedQueryResult> PreparedQueryResultPromise;
+
+//- Lower-level class, enqueuable operation
+class PreparedStatementTask : public SQLOperation
+{
+ public:
+ PreparedStatementTask(PreparedStatement* stmt, bool async = false);
+ ~PreparedStatementTask();
+
+ bool Execute() override;
+ PreparedQueryResultFuture GetFuture() { return m_result->get_future(); }
+
+ protected:
+ PreparedStatement* m_stmt;
+ bool m_has_result;
+ PreparedQueryResultPromise* m_result;
+};
+#endif