Work on sql framework classes

CMakeLists.txt

@@ -7,6 +7,7 @@ set(FRAMEWORK_SOUND ON)
 set(FRAMEWORK_GRAPHICS ON)
 set(FRAMEWORK_XML ON)
 set(FRAMEWORK_NET ON)
+set(FRAMEWORK_SQL ON)
 include(src/framework/CMakeLists.txt)
 include(src/client/CMakeLists.txt)
 

src/framework/CMakeLists.txt

@@ -3,6 +3,7 @@
 # FRAMEWORK_GRAPHICS
 # FRAMEWORK_NET
 # FRAMEWORK_XML
+# FRAMEWORK_SQL
 
 # CMAKE_CURRENT_LIST_DIR cmake 2.6 compatibility
 if(${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 6)

src/framework/cmake/FindMySQL.cmake

@@ -4,8 +4,14 @@
 #  MYSQL_LIBRARY - the mysql library
 
 FIND_PATH(MYSQL_INCLUDE_DIR NAMES mysql.h PATH_SUFFIXES mysql)
-SET(_MYSQL_STATIC_LIBS libmysqlclient.a libmysqlclient_r.a)
-SET(_MYSQL_SHARED_LIBS libmysqlclient.dll.a libmysqlclient_r.dll.a mysqlclient mysqlclient_r)
+IF(WIN32)
+    SET(_MYSQL_STATIC_LIBS libmysql.a libmysql_r.a)
+    SET(_MYSQL_SHARED_LIBS libmysql.dll.a libmysql_r.dll.a libmysql libmysql_r)
+ELSE()
+    SET(_MYSQL_STATIC_LIBS libmysqlclient.a libmysqlclient_r.a)
+    SET(_MYSQL_SHARED_LIBS libmysqlclient.dll.a libmysqlclient_r.dll.a mysqlclient mysqlclient_r)
+ENDIF()
+
 IF(USE_STATIC_LIBS)
     FIND_LIBRARY(MYSQL_LIBRARY NAMES ${_MYSQL_STATIC_LIBS} ${_MYSQL_SHARED_LIBS})
 ELSE()
@@ -14,3 +20,4 @@ ENDIF()
 INCLUDE(FindPackageHandleStandardArgs)
 FIND_PACKAGE_HANDLE_STANDARD_ARGS(MySQL DEFAULT_MSG MYSQL_LIBRARY MYSQL_INCLUDE_DIR)
 MARK_AS_ADVANCED(MYSQL_LIBRARY MYSQL_INCLUDE_DIR)
+

src/framework/const.h

@@ -288,6 +288,13 @@ namespace Fw
         BackgroundPane = 2,
         BothPanes = 3
     };
+
+#ifdef FW_SQL
+    enum DatabaseEngine {
+        DatabaseNone = 0,
+        DatabaseMySQL
+    };
+#endif
 }
 
 #endif

src/framework/sql/database.cpp

@@ -21,11 +21,69 @@
  */
 
 #include "database.h"
+#include "mysql.h"
 
-Database::Database()
+boost::recursive_mutex DBQuery::databaseLock;
+DatabasePtr Database::m_instance = nullptr;
+
+DatabasePtr Database::getInstance()
+{
+    if(!m_instance)
+        m_instance = (DatabasePtr)DatabaseMySQLPtr(new DatabaseMySQL());
+
+    m_instance->use();
+    return m_instance;
+}
+
+DBResultPtr Database::verifyResult(DBResultPtr result)
+{
+    if(result->next())
+        return result;
+
+    result->free();
+    return nullptr;
+}
+
+void DBInsert::setQuery(const std::string& query)
 {
+    m_query = query;
+    m_buf = "";
+    m_rows = 0;
 }
 
-Database::~Database()
+bool DBInsert::addRow(const std::string& row)
 {
+    ++m_rows;
+    if(m_buf.empty()) {
+        m_buf = "(" + row + ")";
+    }
+    else if(m_buf.length() > 8192)
+    {
+        if(!execute())
+            return false;
+
+        m_buf = "(" + row + ")";
+    }
+    else
+        m_buf += ",(" + row + ")";
+
+    return true;
+}
+
+bool DBInsert::addRow(std::stringstream& row)
+{
+    bool ret = addRow(row.str());
+    row.str("");
+    return ret;
+}
+
+bool DBInsert::execute()
+{
+    if(m_buf.empty() || !m_rows)
+        return true;
+
+    m_rows = 0;
+    bool ret = m_db->executeQuery(m_query + m_buf);
+    m_buf = "";
+    return ret;
 }

src/framework/sql/database.h

@@ -22,16 +22,299 @@
 
 #ifndef DATABASE_H
 #define DATABASE_H
-
 #include "declarations.h"
-#include <framework/global.h>
+
+#include <framework/core/clock.h>
 #include <framework/luaengine/luaobject.h>
 
+#include <boost/thread.hpp>
+#include <ctime>
+
 class Database : public LuaObject
 {
-public:
-    Database();
-    ~Database();
+    public:
+        friend class DBTransaction;
+
+        /**
+        * Singleton implementation.
+        *
+        * Retruns instance of database handler. Don't create database (or drivers) instances in your code - instead of it use Database::getInstance()->
+        * This method stores static instance of connection class internaly to make sure exactly one instance of connection is created for entire system.
+        *
+        * @return database connection handler singleton
+        */
+        static DatabasePtr getInstance();
+
+        /**
+        * Database ...
+        */
+        virtual void use() {m_use = g_clock.millis();}
+
+        /**
+        * Database connector.
+        *
+        * Connects the database to the source host.
+        */
+        virtual void connect(const std::string& host, const std::string& user, const std::string& pass,
+                     const std::string& db, uint16 port, const std::string& unix_socket = "") {}
+
+        /**
+        * Transaction related methods.
+        *
+        * Methods for starting, commiting and rolling back transaction. Each of the returns boolean value.
+        *
+        * @return true on success, false on error
+        * @note#include <ctime>
+        *    If your database system doesn't support transactions you should return true - it's not feature test, code should work without transaction, just will lack integrity.
+        */
+
+        virtual bool beginTransaction() {return false;}
+        virtual bool rollback() {return false;}
+        virtual bool commit() {return false;}
+
+        /**
+        * Executes command.
+        *
+        * Executes query which doesn't generates results (eg. INSERT, UPDATE, DELETE...).
+        *
+        * @param std::string query command
+        * @return true on success, false on error
+        */
+        virtual bool executeQuery(const std::string& query) {return false;}
+
+        /**
+        * Queries database.
+        *
+        * Executes query which generates results (mostly SELECT).
+        *
+        * @param std::string query
+        * @return results object (null on error)
+        */
+        virtual DBResultPtr storeQuery(const std::string& query) {return nullptr;}
+
+        /**
+        * Escapes string for query.
+        *
+        * Prepares string to fit SQL queries including quoting it.
+        *
+        * @param std::string string to be escaped
+        * @return quoted string
+        */
+        virtual std::string escapeString(const std::string&) {return "''";}
+
+        /**
+        * Escapes binary stream for query.
+        *
+        * Prepares binary stream to fit SQL queries.
+        *
+        * @param char* binary stream
+        * @param long stream length
+        * @return quoted string
+        */
+        virtual std::string escapeBlob(const char*, uint32) {return "''";}
+
+        /**
+         * Retrieve id of last inserted row
+         *
+         * @return id on success, 0 if last query did not result on any rows with auto_increment keys
+         */
+        virtual uint64 getLastInsertedRowID() {return 0;}
+
+        /**
+        * Get case insensitive string comparison operator
+        *
+        * @return the case insensitive operator
+        */
+        virtual std::string getStringComparer() {return "= ";}
+        virtual std::string getUpdateLimiter() {return " LIMIT 1;";}
+
+        /**
+        * Get database engine
+        *
+        * @return the database engine type
+        */
+        virtual Fw::DatabaseEngine getDatabaseEngine() {return Fw::DatabaseNone;}
+
+        /**
+        * Database connected.
+        *
+        * Returns whether or not the database is connected.
+        *
+        * @return whether or not the database is connected.
+        */
+        bool isConnected() const {return m_connected;}
+
+        /**
+        * Database set connected.
+        *
+        * Sets the database to know that it is connected.
+        */
+        void setConnected(bool connected) { m_connected = connected; }
+
+    protected:
+        virtual bool handleError() {return false;}
+        virtual bool internalExecuteQuery(const std::string &query) {return false;}
+
+        DBResultPtr verifyResult(DBResultPtr result);
+
+        Database(): m_connected(false) {}
+        virtual ~Database() {m_connected = false;}
+
+        ticks_t m_use;
+        bool m_connected;
+
+    private:
+        static DatabasePtr m_instance;
+};
+
+class DBResult : public LuaObject
+{
+    public:
+        /** Get the Integer value of a field in database
+        *\returns The Integer value of the selected field and row
+        *\param s The name of the field
+        */
+        virtual int32 getDataInt(const std::string&) {return 0;}
+
+        /** Get the Long value of a field in database
+        *\returns The Long value of the selected field and row
+        *\param s The name of the field
+        */
+        virtual int64 getDataLong(const std::string&) {return 0;}
+
+        /** Get the String of a field in database
+        *\returns The String of the selected field and row
+        *\param s The name of the field
+        */
+        virtual std::string getDataString(const std::string&) {return "";}
+
+        /** Get the blob of a field in database
+        *\returns a PropStream that is initiated with the blob data field, if not exist it returns NULL.
+        *\param s The name of the field
+        */
+        virtual const char* getDataStream(const std::string&, uint64&) {return "";}
+
+        /** Result freeing
+        */
+        virtual void free() {}
+
+        /** Moves to next result in set
+        *\returns true if moved, false if there are no more results.
+        */
+        virtual bool next() {return false;}
+
+        /** Returned the number of rows from result
+        *\returns integer value of row amount, 0 if result is empty.
+        */
+        virtual int getRowCount() { return 0; }
+
+    protected:
+        DBResult() {}
+        virtual ~DBResult() {}
+};
+
+/**
+ * Thread locking hack.
+ *
+ * By using this class for your queries you lock and unlock database for threads.
+*/
+class DBQuery : public std::stringstream
+{
+    friend class Database;
+    public:
+        DBQuery() {databaseLock.lock();}
+        ~DBQuery() {databaseLock.unlock();}
+
+    protected:
+        static boost::recursive_mutex databaseLock;
+};
+
+/**
+ * INSERT statement.
+ *
+ * Gives possibility to optimize multiple INSERTs on databases that support multiline INSERTs.
+ */
+class DBInsert
+{
+    public:
+        /**
+        * Associates with given database handler.
+        *
+        * @param Database* database wrapper
+        */
+        DBInsert(DatabasePtr db): m_db(db), m_rows(0) {}
+        ~DBInsert() {}
+
+        /**
+        * Sets query prototype.
+        *
+        * @param std::string& INSERT query
+        */
+        void setQuery(const std::string& query);
+
+        /**
+        * Adds new row to INSERT statement.
+        *
+        * On databases that doesn't support multiline INSERTs it simply execute INSERT for each row.
+        *
+        * @param std::string& row data
+        */
+        bool addRow(const std::string& row);
+        /**
+        * Allows to use addRow() with stringstream as parameter.
+        */
+        bool addRow(std::stringstream& row);
+
+        /**
+        * Executes current buffer.
+        */
+        bool execute();
+
+    protected:
+        DatabasePtr m_db;
+
+        uint32 m_rows;
+        std::string m_query, m_buf;
+};
+
+class DBTransaction
+{
+    public:
+        DBTransaction(DatabasePtr database)
+        {
+            m_db = database;
+            m_state = STATE_FRESH;
+        }
+
+        ~DBTransaction()
+        {
+            if(m_state == STATE_READY)
+                m_db->rollback();
+        }
+
+        bool begin()
+        {
+            m_state = STATE_READY;
+            return m_db->beginTransaction();
+        }
+
+        bool commit()
+        {
+            if(m_state != STATE_READY)
+                return false;
+
+            m_state = STATE_DONE;
+            return m_db->commit();
+        }
+
+    private:
+        DatabasePtr m_db;
+        enum TransactionStates_t
+        {
+            STATE_FRESH,
+            STATE_READY,
+            STATE_DONE
+        } m_state;
 };
 
 #endif

src/framework/sql/declarations.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2010-2013 OTClient <https://github.com/edubart/otclient>
+ * Copyright (c) 2010-2012 TitanCore <https://github.com/edubart/titancore>
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -25,10 +25,16 @@
 
 #include <framework/global.h>
 
+class Database;
 class DBResult;
+
 class DatabaseMySQL;
+class MySQLResult;
 
-typedef stdext::shared_object_ptr<DBResult> DBResultPtr;
+typedef stdext::shared_object_ptr<Database> DatabasePtr;
 typedef stdext::shared_object_ptr<DatabaseMySQL> DatabaseMySQLPtr;
 
+typedef stdext::shared_object_ptr<DBResult> DBResultPtr;
+typedef stdext::shared_object_ptr<MySQLResult> MySQLResultPtr;
+
 #endif

src/framework/sql/mysql.cpp

@@ -20,46 +20,50 @@
  * THE SOFTWARE.
  */
 
-#ifdef WIN32
-#include <winsock2.h>
-#endif
 #include "mysql.h"
+
 #include <mysql/errmsg.h>
-#include <framework/core/clock.h>
+
 #include <framework/core/logger.h>
 
-DatabaseMySQL::DatabaseMySQL() : m_running(false)
+DatabaseMySQL::DatabaseMySQL()
 {
-    if(!mysql_init(&m_mysqlHandle))
+    m_handle = new MYSQL();
+    if(!mysql_init(m_handle)) {
         g_logger.fatal("Failed to initialize MySQL connection handle.");
+    }
 
     my_bool reconnect = true;
-    mysql_options(&m_mysqlHandle, MYSQL_OPT_RECONNECT, &reconnect);
+    mysql_options(m_handle, MYSQL_OPT_RECONNECT, &reconnect);
 }
 
 DatabaseMySQL::~DatabaseMySQL()
 {
-    mysql_close(&m_mysqlHandle);
+    mysql_close(m_handle);
+    delete m_handle;
 }
 
 void DatabaseMySQL::connect(const std::string& host, const std::string& user, const std::string& pass,
-             const std::string& db, uint16_t port, const std::string& unix_socket)
+             const std::string& db, uint16 port, const std::string& unix_socket)
 {
-    if(!mysql_real_connect(&m_mysqlHandle,
+    if(!mysql_real_connect(m_handle,
                            host.c_str(),
                            user.c_str(),
                            pass.c_str(),
                            db.c_str(),
                            port,
                            unix_socket.empty() ? NULL : unix_socket.c_str(), 0)) {
-        g_logger.error(stdext::format("Failed to connect to database. MYSQL ERROR: %s", mysql_error(&m_mysqlHandle)));
+        g_logger.error(stdext::format("Failed to connect to database. MYSQL ERROR: %s", mysql_error(m_handle)));
+    }
+    else {
+        setConnected(true);
     }
 }
 
 bool DatabaseMySQL::handleError()
 {
-    unsigned int error = mysql_errno(&m_mysqlHandle);
-    g_logger.error(stdext::format("MYSQL error code = %d, message: %s", error, mysql_error(&m_mysqlHandle)));
+    unsigned int error = mysql_errno(m_handle);
+    g_logger.error(stdext::format("MYSQL error code = %d, message: %s", error, mysql_error(m_handle)));
 
     if(error == CR_SOCKET_CREATE_ERROR ||
        error == CR_CONNECTION_ERROR ||
@@ -70,18 +74,19 @@ bool DatabaseMySQL::handleError()
        error == CR_SERVER_LOST ||
        error == CR_SERVER_HANDSHAKE_ERR) {
         g_logger.error("MYSQL connection lost, trying to reconnect...");
+        setConnected(false);
 
-        //int64_t startTime = g_clock.millis();
-
-        /*while(true) {
-            bool connected = (mysql_ping(&m_mysqlHandle) == 0);
-            uint32_t diffTime = (mTime() - startTime);
+        ticks_t startTime = g_clock.millis();
+        while(true) {
+            bool connected = (mysql_ping(m_handle) == 0);
+            ticks_t diffTime = (g_clock.millis() - startTime);
             if(connected) {
                 g_logger.info(stdext::format("MySQL reconneted in %d ms", diffTime));
+                setConnected(true);
                 return true;
             }
-            mSleep(100);
-        }*/
+            stdext::millisleep(100);
+        }
     }
 
     return false;
@@ -94,8 +99,8 @@ bool DatabaseMySQL::beginTransaction()
 
 bool DatabaseMySQL::rollback()
 {
-    if(mysql_rollback(&m_mysqlHandle) != 0) {
-        g_logger.error(mysql_error(&m_mysqlHandle));
+    if(mysql_rollback(m_handle)) {
+        g_logger.error(stdext::format("DatabaseMySQL::rollback() ERROR: %s (%s)", mysql_error(m_handle), mysql_errno(m_handle)));
         return false;
     }
 
@@ -104,8 +109,8 @@ bool DatabaseMySQL::rollback()
 
 bool DatabaseMySQL::commit()
 {
-    if(mysql_commit(&m_mysqlHandle) != 0) {
-        g_logger.error(mysql_error(&m_mysqlHandle));
+    if(mysql_commit(m_handle)) {
+        g_logger.error(stdext::format("DatabaseMySQL::commit() ERROR: %s (%s)", mysql_error(m_handle), mysql_errno(m_handle)));
         return false;
     }
 
@@ -114,7 +119,7 @@ bool DatabaseMySQL::commit()
 
 bool DatabaseMySQL::internalExecuteQuery(const std::string &query)
 {
-    while(mysql_real_query(&m_mysqlHandle, query.c_str(), query.length()) != 0) {
+    while(mysql_real_query(m_handle, query.c_str(), query.length()) != 0) {
         if(!handleError()) {
             return false;
         }
@@ -128,11 +133,11 @@ bool DatabaseMySQL::executeQuery(const std::string &query)
     //LOG_ONDELAY(500);
 
     if(internalExecuteQuery(query)) {
-        MYSQL_RES *m_res = mysql_store_result(&m_mysqlHandle);
+        MYSQL_RES* m_res = mysql_store_result(m_handle);
 
         if(m_res) {
             mysql_free_result(m_res);
-        } else if(mysql_errno(&m_mysqlHandle) != 0) {
+        } else if(mysql_errno(m_handle) != 0) {
             handleError();
         }
 
@@ -147,124 +152,132 @@ DBResultPtr DatabaseMySQL::storeQuery(const std::string &query)
     //LOG_ONDELAY(500);
 
     while(internalExecuteQuery(query)) {
-        MYSQL_RES *m_res = mysql_store_result(&m_mysqlHandle);
+        MYSQL_RES* m_res = mysql_store_result(m_handle);
 
         if(m_res) {
-            DBResultPtr res = DBResultPtr(new DBResult(m_res));
-            if(res->next()) {
-                return res;
-            } else {
-                //delete res;
+            DBResultPtr res = (DBResultPtr)MySQLResultPtr(new MySQLResult(m_res));
+            if(!verifyResult(res))
                 break;
-            }
-        } else if(mysql_errno(&m_mysqlHandle) != 0) {
-            if(!handleError()) {
+
+            return res;
+        }
+        else if(mysql_errno(m_handle) != 0) {
+            if(!handleError())
                 break;
-            }
         }
 
         //mSleep(10);
     }
 
-    return NULL;
+    return nullptr;
 }
 
-uint64_t DatabaseMySQL::getLastInsertedRowID()
+uint64 DatabaseMySQL::getLastInsertedRowID()
 {
-    return (uint64_t)mysql_insert_id(&m_mysqlHandle);
+    return (uint64)mysql_insert_id(m_handle);
 }
 
 std::string DatabaseMySQL::escapeString(const std::string &s)
 {
-    return escapeBlob(s.c_str(), s.length());
+    return escapeBlob( s.c_str(), s.length() );
 }
 
-std::string DatabaseMySQL::escapeBlob(const char* s, uint32_t length)
+std::string DatabaseMySQL::escapeBlob(const char* s, uint32 length)
 {
-    if(!s)
-        return std::string("''");
+    if(!s) {
+        return std::string();
+    }
 
     char* output = new char[length * 2 + 1];
+    mysql_real_escape_string(m_handle, output, s, length);
+
+    std::string res = "'";
+    res += output;
+    res += "'";
 
-    mysql_real_escape_string(&m_mysqlHandle, output, s, length);
-    std::string r = "'";
-    r += output;
-    r += "'";
     delete[] output;
-    return r;
+    return res;
 }
 
-void DatabaseMySQL::freeResult(DBResult* res)
+int32 MySQLResult::getDataInt(const std::string& s)
 {
-    delete res;
+    listNames_t::iterator it = m_listNames.find(s);
+    if(it != m_listNames.end())
+        return m_row[it->second] ? atoi(m_row[it->second]) : 0;
+
+    g_logger.error(stdext::format("MySQLResult::getDataInt() Error: %d", s));
+    return 0; // Failed
 }
 
-DBResult::DBResult(MYSQL_RES* res)
+int64 MySQLResult::getDataLong(const std::string& s)
 {
-    m_res = res;
-    m_listNames.clear();
+    listNames_t::iterator it = m_listNames.find(s);
+    if(it != m_listNames.end())
+        return m_row[it->second] ? atoll(m_row[it->second]) : 0;
 
-    MYSQL_FIELD* field;
-    int32_t i = 0;
-    while((field = mysql_fetch_field(m_res))) {
-        m_listNames[field->name] = i;
-        i++;
-    }
+    g_logger.error(stdext::format("MySQLResult::getDataLong() Error: %d", s));
+    return 0; // Failed
 }
 
-DBResult::~DBResult()
+std::string MySQLResult::getDataString(const std::string& s)
 {
-    mysql_free_result(m_res);
+    listNames_t::iterator it = m_listNames.find(s);
+    if(it != m_listNames.end())
+        return m_row[it->second] ? std::string(m_row[it->second]) : std::string();
+
+    g_logger.error(stdext::format("MySQLResult::getDataString() Error: %d", s));
+    return std::string(); // Failed
 }
 
-int32_t DBResult::getDataInt(const std::string &s)
+const char* MySQLResult::getDataStream(const std::string& s, uint64& size)
 {
-    ListNames::iterator it = m_listNames.find(s);
-    if(it != m_listNames.end() ) {
-        if(m_row[it->second] == NULL) {
-            return 0;
-        }
-        else {
-            return atoi(m_row[it->second]);
-        }
+    size = 0;
+    listNames_t::iterator it = m_listNames.find(s);
+    if(it == m_listNames.end()) {
+        g_logger.error(stdext::format("MySQLResult::getDataStream() Error: %d", s));
+        return NULL;
     }
 
-    g_logger.error(stdext::format("error during getDataInt(%s).", s));
-    return 0;
+    if(!m_row[it->second])
+        return NULL;
+
+    size = mysql_fetch_lengths(m_resultHandle)[it->second];
+    return m_row[it->second];
 }
 
-int64_t DBResult::getDataLong(const std::string &s)
+void MySQLResult::free()
 {
-    ListNames::iterator it = m_listNames.find(s);
-    if(it != m_listNames.end()) {
-        if(m_row[it->second] == NULL) {
-            return 0;
-        }
-        else {
-            return atoll(m_row[it->second]);
-        }
+    if(!m_resultHandle) {
+        g_logger.fatal("MySQLResult::free() Error trying to free already freed result");
+        return;
     }
 
-    g_logger.error(stdext::format("error during getDataLong(%s).", s));
-    return 0;
+    mysql_free_result(m_resultHandle);
+
+    delete m_resultHandle;
+    m_resultHandle = NULL;
 }
 
-std::string DBResult::getDataString(const std::string &s)
+bool MySQLResult::next()
 {
-    ListNames::iterator it = m_listNames.find(s);
-    if(it != m_listNames.end() ) {
-        if(m_row[it->second] == NULL)
-            return std::string("");
-        else
-            return std::string(m_row[it->second]);
-    }
+    m_row = mysql_fetch_row(m_resultHandle);
+    return (m_row != NULL);
+}
 
-    g_logger.error(stdext::format("error during getDataString(%s).", s));
-    return std::string("");
+MySQLResult::~MySQLResult()
+{
+    if(m_resultHandle)
+        mysql_free_result(m_resultHandle);
 }
 
-bool DBResult::next()
+MySQLResult::MySQLResult(MYSQL_RES* result)
 {
-    m_row = mysql_fetch_row(m_res);
-    return m_row != NULL;
+    m_resultHandle = result;
+    m_listNames.clear();
+
+    MYSQL_FIELD* field;
+    int32 i = 0;
+    while((field = mysql_fetch_field(m_resultHandle))) {
+        m_listNames[field->name] = i++;
+    }
 }

src/framework/sql/mysql.h

@@ -20,104 +20,70 @@
  * THE SOFTWARE.
  */
 
-#ifndef DATABASEMYSQL_H
-#define DATABASEMYSQL_H
+#ifndef __DATABASE_MYSQL__
+#define __DATABASE_MYSQL__
 
 #include "database.h"
+
 #include <framework/global.h>
-#include <mysql/mysql.h>
 
-class DBResult;
+#ifdef WINDOWS
+    #include <winsock2.h>
+#endif
+
+#include <mysql/mysql.h>
 
 class DatabaseMySQL : public Database
 {
-public:
-    DatabaseMySQL();
-    ~DatabaseMySQL();
+    public:
+        DatabaseMySQL();
+        virtual ~DatabaseMySQL();
 
-    void connect(const std::string& host, const std::string& user, const std::string& pass,
-                 const std::string& db, uint16_t port, const std::string& unix_socket = "");
+        virtual void connect(const std::string& host, const std::string& user, const std::string& pass,
+                     const std::string& db, uint16 port, const std::string& unix_socket = "");
 
-    bool beginTransaction();
-    bool rollback();
-    bool commit();
+        virtual bool beginTransaction();
+        virtual bool rollback();
+        virtual bool commit();
 
-    bool executeQuery(const std::string &query);
-    DBResultPtr storeQuery(const std::string &query);
+        virtual bool executeQuery(const std::string& query);
+        virtual DBResultPtr storeQuery(const std::string& query);
 
-    uint64_t getLastInsertedRowID();
+        virtual std::string escapeString(const std::string &s);
+        virtual std::string escapeBlob(const char* s, uint32 length);
 
-    std::string escapeString(const std::string &s);
-    std::string escapeBlob(const char* s, uint32_t length);
+        virtual uint64 getLastInsertedRowID();
+        virtual Fw::DatabaseEngine getDatabaseEngine() {return Fw::DatabaseMySQL;}
 
-    void freeResult(DBResult *res);
+    protected:
+        bool handleError();
+        bool internalExecuteQuery(const std::string &query);
 
-protected:
-    bool handleError();
-    bool internalExecuteQuery(const std::string &query);
-
-    bool m_running;
-    MYSQL m_mysqlHandle;
+        MYSQL* m_handle;
 };
 
-class DBResult : public LuaObject
+class MySQLResult : public DBResult
 {
-public:
-    DBResult(MYSQL_RES* res);
-     ~DBResult();
-
     friend class DatabaseMySQL;
+    public:
+        virtual int32 getDataInt(const std::string& s);
+        virtual int64 getDataLong(const std::string& s);
+        virtual std::string getDataString(const std::string& s);
+        virtual const char* getDataStream(const std::string& s, uint64& size);
 
-    int32_t getDataInt(const std::string &s);
-    int64_t getDataLong(const std::string &s);
-    std::string getDataString(const std::string &s);
+        virtual void free();
+        virtual bool next();
+        virtual int getRowCount() { return mysql_num_rows(m_resultHandle); }
 
-    bool next();
-    int getRowCount() { return mysql_num_rows(m_res); }
+    protected:
+        MySQLResult(MYSQL_RES* result);
+        virtual ~MySQLResult();
 
-private:
-    typedef std::map<const std::string, uint32_t> ListNames;
-    ListNames m_listNames;
+        typedef std::map<const std::string, uint32> listNames_t;
+        listNames_t m_listNames;
 
-    MYSQL_RES* m_res;
-    MYSQL_ROW m_row;
-};
-
-class DBTransaction
-{
-public:
-    DBTransaction(DatabaseMySQL* database) {
-        m_database = database;
-        m_state = STATE_NO_START;
-    }
-
-    ~DBTransaction() {
-        if(m_state == STATE_START) {
-            m_database->rollback();
-        }
-    }
-
-    bool begin() {
-        m_state = STATE_START;
-        return m_database->beginTransaction();
-    }
-
-    bool commit() {
-        if(m_state == STATE_START) {
-            m_state = STEATE_COMMIT;
-            return m_database->commit();
-        } else {
-            return false;
-        }
-    }
-
-private:
-    enum TransactionStates_t {
-        STATE_NO_START, STATE_START, STEATE_COMMIT
-    };
-
-    TransactionStates_t m_state;
-    DatabaseMySQL* m_database;
+        MYSQL_RES* m_resultHandle;
+        MYSQL_ROW m_row;
 };
 
 #endif