Merge branch 'sql'

CMakeLists.txt

@@ -3,10 +3,12 @@ project(otclient)
 
 set(VERSION "0.6.2")
 
-set(FRAMEWORK_SOUND ON)
-set(FRAMEWORK_GRAPHICS ON)
-set(FRAMEWORK_XML ON)
-set(FRAMEWORK_NET ON)
+option(FRAMEWORK_SOUND "Use SOUND " ON)
+option(FRAMEWORK_GRAPHICS "Use GRAPHICS " ON)
+option(FRAMEWORK_XML "Use XML " ON)
+option(FRAMEWORK_NET "Use NET " ON)
+option(FRAMEWORK_SQL "Use SQL" OFF)
+
 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)
@@ -233,11 +234,10 @@ set(framework_LIBRARIES ${framework_LIBRARIES}
 
 set(framework_INCLUDE_DIRS ${framework_INCLUDE_DIRS}
     ${Boost_INCLUDE_DIRS}
-    ${OPENGL_INCLUDE_DIR}
     ${LUA_INCLUDE_DIR}
     ${PHYSFS_INCLUDE_DIR}
     ${OpenSSL_INCLUDE_DIR}
-    ${ZLIB_INCLUDE_DIR}
+    ${framework_INCLUDE_DIRS} 
 )
 
 if(CMAKE_BUILD_TYPE STREQUAL "Debug" OR CMAKE_BUILD_TYPE STREQUAL "RelWithDebInfo")
@@ -279,10 +279,10 @@ else()
     else()
         set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pthread")
         set(CMAKE_CXX_LINK_FLAGS "${CMAKE_CXX_LINK_FLAGS} -rdynamic -Wl,-rpath,./libs") # rdynamic is needed by backtrace.h used in crash handler
-        set(SYSTEM_LIBRARIES dl)
+        set(SYSTEM_LIBRARIES dl rt)
     endif()
-    set(framework_LIBRARIES ${framework_LIBRARIES} ${SYSTEM_LIBRARIES})
 endif()
+set(framework_LIBRARIES ${framework_LIBRARIES} ${SYSTEM_LIBRARIES})
 
 if(FRAMEWORK_THREAD_SAFE)
     set(framework_DEFINITIONS ${framework_DEFINITIONS} -DTHREAD_SAFE)
@@ -462,14 +462,12 @@ if(FRAMEWORK_SOUND)
     find_package(Ogg REQUIRED)
 
     set(framework_INCLUDE_DIRS ${framework_INCLUDE_DIRS} ${OPENAL_INCLUDE_DIR} ${VORBISFILE_INCLUDE_DIR})
-    set(framework_LIBRARIES ${framework_LIBRARIES} ${OPENAL_LIBRARY} ${VORBISFILE_LIBRARY} ${VORBIS_LIBRARY} ${OGG_LIBRARY})
+    set(framework_LIBRARIES ${OPENAL_LIBRARY} ${VORBISFILE_LIBRARY} ${VORBIS_LIBRARY} ${OGG_LIBRARY} ${framework_LIBRARIES})
 
     if(WIN32)
         set(framework_LIBRARIES ${framework_LIBRARIES} winmm)
     elseif(APPLE)
         set(framework_LIBRARIES ${framework_LIBRARIES} System)
-    else()
-        set(framework_LIBRARIES ${framework_LIBRARIES} rt)
     endif()
 
     set(framework_SOURCES ${framework_SOURCES}
@@ -536,7 +534,7 @@ if(FRAMEWORK_SQL)
     find_package(MySQL REQUIRED)
 
     set(framework_INCLUDE_DIRS ${framework_INCLUDE_DIRS} ${MYSQL_INCLUDE_DIR})
-    set(framework_LIBRARIES ${framework_LIBRARIES} ${MYSQL_LIBRARY})
+    set(framework_LIBRARIES ${MYSQL_LIBRARY} ${framework_LIBRARIES})
 
     set(framework_SOURCES ${framework_SOURCES}
         ${CMAKE_CURRENT_LIST_DIR}/sql/declarations.h

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/luafunctions.cpp

@@ -840,22 +840,50 @@ void Application::registerLuaFunctions()
 #ifdef FW_SQL
     // Database
     g_lua.registerClass<Database>();
+    g_lua.bindClassMemberFunction<Database>("getDatabaseEngine", &Database::getDatabaseEngine);
+    g_lua.bindClassMemberFunction<Database>("isConnected", &Database::isConnected);
+    g_lua.bindClassMemberFunction<Database>("getStringComparer", &Database::getStringComparer);
+    g_lua.bindClassMemberFunction<Database>("getUpdateLimiter", &Database::getUpdateLimiter);
+    g_lua.bindClassMemberFunction<Database>("getLastInsertedRowID", &Database::getLastInsertedRowID);
+    g_lua.bindClassMemberFunction<Database>("escapeString", &Database::escapeString);
+    //g_lua.bindClassMemberFunction<Database>("escapeBlob", &Database::escapeBlob); // need to write a cast for this type to work (if needed)
+
+    // DBQuery
+    /* (not sure if this class will work as a luafunction)
+    g_lua.registerClass<DBQuery>();
+    g_lua.bindClassStaticFunction<DBQuery>("create", []{ return DBQuery(); });
+    g_lua.bindClassMemberFunction<DBQuery>("append", &DBQuery::append);
+    g_lua.bindClassMemberFunction<DBQuery>("set", &DBQuery::set);
+    */
 
     // DBResult
     g_lua.registerClass<DBResult>();
     g_lua.bindClassMemberFunction<DBResult>("getDataInt", &DBResult::getDataInt);
     g_lua.bindClassMemberFunction<DBResult>("getDataLong", &DBResult::getDataLong);
     g_lua.bindClassMemberFunction<DBResult>("getDataString", &DBResult::getDataString);
+    //g_lua.bindClassMemberFunction<DBResult>("getDataStream", &DBResult::getDataStream); // need to write a cast for this type to work (if needed)
     g_lua.bindClassMemberFunction<DBResult>("getRowCount", &DBResult::getRowCount);
+    g_lua.bindClassMemberFunction<DBResult>("free", &DBResult::free);
     g_lua.bindClassMemberFunction<DBResult>("next", &DBResult::next);
 
-
-    // Mysql
+    // MySQL
     g_lua.registerClass<DatabaseMySQL, Database>();
     g_lua.bindClassStaticFunction<DatabaseMySQL>("create", []{ return DatabaseMySQLPtr(new DatabaseMySQL); });
     g_lua.bindClassMemberFunction<DatabaseMySQL>("connect", &DatabaseMySQL::connect);
+    g_lua.bindClassMemberFunction<DatabaseMySQL>("beginTransaction", &DatabaseMySQL::beginTransaction);
+    g_lua.bindClassMemberFunction<DatabaseMySQL>("rollback", &DatabaseMySQL::rollback);
+    g_lua.bindClassMemberFunction<DatabaseMySQL>("commit", &DatabaseMySQL::commit);
     g_lua.bindClassMemberFunction<DatabaseMySQL>("executeQuery", &DatabaseMySQL::executeQuery);
     g_lua.bindClassMemberFunction<DatabaseMySQL>("storeQuery", &DatabaseMySQL::storeQuery);
-    g_lua.bindClassMemberFunction<DatabaseMySQL>("escapeString", &DatabaseMySQL::escapeString);
+
+    // MySQLResult
+    g_lua.registerClass<MySQLResult>();
+    g_lua.bindClassMemberFunction<MySQLResult>("getDataInt", &MySQLResult::getDataInt);
+    g_lua.bindClassMemberFunction<MySQLResult>("getDataLong", &MySQLResult::getDataLong);
+    g_lua.bindClassMemberFunction<MySQLResult>("getDataString", &MySQLResult::getDataString);
+    //g_lua.bindClassMemberFunction<MySQLResult>("getDataStream", &MySQLResult::getDataStream); // need to write a cast for this type to work (if needed)
+    g_lua.bindClassMemberFunction<MySQLResult>("getRowCount", &MySQLResult::getRowCount);
+    g_lua.bindClassMemberFunction<MySQLResult>("free", &MySQLResult::free);
+    g_lua.bindClassMemberFunction<MySQLResult>("next", &MySQLResult::next);
 #endif
 }

src/framework/sql/database.cpp

@@ -22,10 +22,57 @@
 
 #include "database.h"
 
-Database::Database()
+boost::recursive_mutex DBQuery::databaseLock;
+
+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;
+}
+
+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;
 }
 
-Database::~Database()
+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 +22,286 @@
 
 #ifndef DATABASE_H
 #define DATABASE_H
-
 #include "declarations.h"
-#include <framework/global.h>
+
 #include <framework/luaengine/luaobject.h>
 
+#include <boost/thread.hpp>
+
 class Database : public LuaObject
 {
 public:
-    Database();
-    ~Database();
+    friend class DBTransaction;
+
+    Database(): m_connected(false) {}
+    virtual ~Database() { m_connected = false; }
+
+    /**
+    * 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() { return m_connected; }
+
+protected:
+    /**
+    * Database set connected.
+    *
+    * Sets the database to know that it is connected.
+    */
+    void setConnected(bool connected) { m_connected = connected; }
+
+    virtual bool handleError() { return false; }
+    virtual bool internalExecuteQuery(const std::string &query) { return false; }
+
+    DBResultPtr verifyResult(DBResultPtr result);
+
+    ticks_t m_use;
+    bool m_connected;
+
+private:
+    static DatabasePtr m_instance;
+};
+
+class DBResult : public LuaObject
+{
+public:
+    DBResult() {}
+    virtual ~DBResult() {}
+
+    /** 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; }
+};
+
+/**
+ * Thread locking hack.
+ *
+ * By using this class for your queries you lock and unlock database for threads.
+*/
+class DBQuery : public std::stringstream, public LuaObject
+{
+friend class Database;
+public:
+    DBQuery() { databaseLock.lock(); }
+    ~DBQuery() { databaseLock.unlock(); }
+
+    void set(std::string& query) { str(query); }
+    void append(char query) { putback(query); }
+
+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 DatabasePtr database wrapper
+    */
+    DBInsert(const 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;
+    std::string 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

@@ -25,10 +25,17 @@
 
 #include <framework/global.h>
 
+class Database;
 class DBResult;
-class DatabaseMySQL;
 
+typedef stdext::shared_object_ptr<Database> DatabasePtr;
 typedef stdext::shared_object_ptr<DBResult> DBResultPtr;
+
+// MySQL
+class DatabaseMySQL;
+class MySQLResult;
+
 typedef stdext::shared_object_ptr<DatabaseMySQL> DatabaseMySQLPtr;
+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 = stdext::millis();
+        while(true) {
+            bool connected = (mysql_ping(m_handle) == 0);
+            ticks_t diffTime = (stdext::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;
         }
@@ -125,14 +130,12 @@ bool DatabaseMySQL::internalExecuteQuery(const std::string &query)
 
 bool DatabaseMySQL::executeQuery(const std::string &query)
 {
-    //LOG_ONDELAY(500);
-
     if(internalExecuteQuery(query)) {
-        MYSQL_RES *m_res = mysql_store_result(&m_mysqlHandle);
+        MYSQL_RES* res = mysql_store_result(m_handle);
 
-        if(m_res) {
-            mysql_free_result(m_res);
-        } else if(mysql_errno(&m_mysqlHandle) != 0) {
+        if(res) {
+            mysql_free_result(res);
+        } else if(mysql_errno(m_handle) != 0) {
             handleError();
         }
 
@@ -142,129 +145,133 @@ bool DatabaseMySQL::executeQuery(const std::string &query)
     return false;
 }
 
-DBResultPtr DatabaseMySQL::storeQuery(const std::string &query)
+DBResultPtr DatabaseMySQL::storeQuery(const std::string& query)
 {
-    //LOG_ONDELAY(500);
-
     while(internalExecuteQuery(query)) {
-        MYSQL_RES *m_res = mysql_store_result(&m_mysqlHandle);
-
-        if(m_res) {
-            DBResultPtr res = DBResultPtr(new DBResult(m_res));
-            if(res->next()) {
-                return res;
-            } else {
-                //delete res;
+        MYSQL_RES* res = mysql_store_result(m_handle);
+
+        if(res) {
+            DBResultPtr result = (DBResultPtr)MySQLResultPtr(new MySQLResult(res));
+            if(!verifyResult(result))
                 break;
-            }
-        } else if(mysql_errno(&m_mysqlHandle) != 0) {
-            if(!handleError()) {
+
+            return result;
+        }
+        else if(mysql_errno(m_handle) != 0) {
+            if(!handleError())
                 break;
-            }
         }
 
-        //mSleep(10);
+        stdext::millisleep(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;
+    RowNames_t::iterator it = m_names.find(s);
+    if(it != m_names.end())
+        return m_row[it->second] ? atoi(m_row[it->second]) : 0;
+
+    g_logger.error(stdext::format("[MySQLResult::getDataInt] Error: %d", s));
+    return 0;
 }
 
-DBResult::DBResult(MYSQL_RES* res)
+int64 MySQLResult::getDataLong(const std::string& s)
 {
-    m_res = res;
-    m_listNames.clear();
+    RowNames_t::iterator it = m_names.find(s);
+    if(it != m_names.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;
 }
 
-DBResult::~DBResult()
+std::string MySQLResult::getDataString(const std::string& s)
 {
-    mysql_free_result(m_res);
+    RowNames_t::iterator it = m_names.find(s);
+    if(it != m_names.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();
 }
 
-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;
+    RowNames_t::iterator it = m_names.find(s);
+    if(it == m_names.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_result)[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_result) {
+        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_result);
+    m_result = 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_result);
+    return (m_row != NULL);
+}
 
-    g_logger.error(stdext::format("error during getDataString(%s).", s));
-    return std::string("");
+MySQLResult::~MySQLResult()
+{
+    if(m_result)
+        mysql_free_result(m_result);
 }
 
-bool DBResult::next()
+MySQLResult::MySQLResult(MYSQL_RES* result)
 {
-    m_row = mysql_fetch_row(m_res);
-    return m_row != NULL;
+    m_result = result;
+    m_names.clear();
+
+    MYSQL_FIELD* field;
+    int32 i = 0;
+    while((field = mysql_fetch_field(m_result))) {
+        m_names[field->name] = i++;
+    }
 }

src/framework/sql/mysql.h

@@ -24,100 +24,68 @@
 #define DATABASEMYSQL_H
 
 #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();
-
-    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 ~DatabaseMySQL();
 
-    bool beginTransaction();
-    bool rollback();
-    bool commit();
+    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 executeQuery(const std::string &query);
-    DBResultPtr storeQuery(const std::string &query);
+    virtual bool beginTransaction();
+    virtual bool rollback();
+    virtual bool commit();
 
-    uint64_t getLastInsertedRowID();
+    virtual bool executeQuery(const std::string& query);
+    virtual DBResultPtr storeQuery(const std::string& query);
 
-    std::string escapeString(const std::string &s);
-    std::string escapeBlob(const char* s, uint32_t length);
+    virtual std::string escapeString(const std::string &s);
+    virtual std::string escapeBlob(const char* s, uint32 length);
 
-    void freeResult(DBResult *res);
+    virtual uint64 getLastInsertedRowID();
+    virtual Fw::DatabaseEngine getDatabaseEngine() {return Fw::DatabaseMySQL;}
 
 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;
+friend class DatabaseMySQL;
 
-    int32_t getDataInt(const std::string &s);
-    int64_t getDataLong(const std::string &s);
-    std::string getDataString(const std::string &s);
+public:
+    MySQLResult(MYSQL_RES* result);
+    virtual ~MySQLResult();
 
-    bool next();
-    int getRowCount() { return mysql_num_rows(m_res); }
+    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);
 
-private:
-    typedef std::map<const std::string, uint32_t> ListNames;
-    ListNames m_listNames;
+    virtual void free();
+    virtual bool next();
+    virtual int getRowCount() { return mysql_num_rows(m_result); }
 
-    MYSQL_RES* m_res;
-    MYSQL_ROW m_row;
-};
+protected:
+    typedef std::map<const std::string, uint32> RowNames_t;
+    RowNames_t m_names;
 
-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_result;
+    MYSQL_ROW m_row;
 };
 
 #endif