Implement basic functionality of the DatabaseManager. Also made MysqlConnection inherint from Database, and it's now possible to create instances from it.

core/database_manager.cpp

@@ -1,11 +1,54 @@
 #include "database_manager.h"
 
 void DatabaseManager::load() {
-    //go thourgh settings, and create all the defined db backends
+	//go thourgh settings, and create all the defined db backends
+}
+
+uint32_t DatabaseManager::create_database(const std::string &name) {
+    Database *db = _create_database(name);
+
+    if (!db) {
+		printf("create_database: %s, returned db is null!", name.c_str());
+        return -1;
+	}
+
+    databases.push_back(db);
+
+    return databases.size() - 1;
 }
 
 DatabaseManager *DatabaseManager::get_singleton() {
-    return _instance;
+	return _instance;
+}
+
+void DatabaseManager::_register_db_creation_func(const std::string &name, std::function<Database *()> func) {
+	if (!func) {
+		printf("_register_db_creation_func: %s, func is wrong!", name.c_str());
+        return;
+	}
+
+	_db_creation_func_map[name] = func;
+}
+
+void DatabaseManager::_unregister_db_creation_func(const std::string &name) {
+	_db_creation_func_map.erase(name);
+}
+
+Database *DatabaseManager::_create_database(const std::string &name) {
+	std::function<Database *()> func = _db_creation_func_map[name];
+
+	if (!func) {
+		printf("_create_database: %s, func is wrong!", name.c_str());
+        return nullptr;
+	}
+
+    Database *db = func();
+
+    if (!db) {
+		printf("_create_database: %s, returned db is null!", name.c_str());
+	}
+
+    return db;
 }
 
 DatabaseManager::DatabaseManager() {
@@ -15,9 +58,11 @@ DatabaseManager::DatabaseManager() {
 DatabaseManager::~DatabaseManager() {
 	_instance = nullptr;
 
-    for (uint32_t i = 0; i < databases.size(); ++i) {
-        delete databases[i];
-    }
+	for (uint32_t i = 0; i < databases.size(); ++i) {
+		delete databases[i];
+	}
 }
 
-DatabaseManager *DatabaseManager::_instance = nullptr;
+DatabaseManager *DatabaseManager::_instance = nullptr;
+
+std::map<std::string, std::function<Database *()> > DatabaseManager::_db_creation_func_map;

core/database_manager.h

@@ -2,6 +2,8 @@
 #define DATABASE_MANAGER_H
 
 #include <vector>
+#include <map>
+#include <functional>
 
 #include "database.h"
 
@@ -11,13 +13,23 @@ public:
 
     void load();
 
-    DatabaseManager *get_singleton();
+    static DatabaseManager *get_singleton();
+
+    //note: not threadsafe, create these at the start of your program!
+    uint32_t create_database(const std::string &name);
+
+    static void _register_db_creation_func(const std::string &name, std::function<Database*()> func);
+    static void _unregister_db_creation_func(const std::string &name);
+
+    static Database *_create_database(const std::string &name);
 
     DatabaseManager();
     ~DatabaseManager();
 
 private:
     static DatabaseManager * _instance;
+
+    static std::map<std::string, std::function<Database *()> > _db_creation_func_map;
 };
 
 #endif

database/mysql/mysql_connection.h

@@ -1,6 +1,9 @@
 #ifndef MYSQL_CONNECTION
 #define MYSQL_CONNECTION
 
+#include "core/database.h"
+#include "core/database_manager.h"
+
 //Brynet has it aswell, and because of using namespace it is defined here aswell
 //later this will be fixed better
 #ifdef IS_NUM
@@ -9,17 +12,28 @@
 
 #include <mysql.h>
 
-class MysqlConnection {
-  public:
-    MysqlConnection() {
-        mysql = new MYSQL();
-    }
-    ~MysqlConnection()
-    {
-        delete mysql;
-    }
-    
-    MYSQL *mysql;
+class MysqlConnection : public Database {
+public:
+	static Database *_creation_func() {
+		return new MysqlConnection();
+	}
+
+	static void _register() {
+		DatabaseManager::_register_db_creation_func("mysql", MysqlConnection::_creation_func);
+	}
+
+	static void _unregister() {
+		DatabaseManager::_unregister_db_creation_func("mysql");
+	}
+
+	MysqlConnection() {
+		mysql = new MYSQL();
+	}
+	~MysqlConnection() {
+		delete mysql;
+	}
+
+	MYSQL *mysql;
 };
 
 #undef IS_NUM

main.cpp

@@ -9,12 +9,16 @@
 
 #include "modules/message_page/message_page.h"
 
+#include "database/mysql/mysql_connection.h"
+
 #define MAIN_CLASS RDNApplication
 
 int main(int argc, char **argv) {
 
 #if MYSQL_PRESENT
 	printf("mysql present\n");
+
+	MysqlConnection::_register();
 #endif
 
 #if PGSQL_PRESENT
@@ -29,6 +33,9 @@ int main(int argc, char **argv) {
 	file_cache->wwwroot = "./www";
 	file_cache->wwwroot_refresh_cache();
 
+	DatabaseManager *dbm = new DatabaseManager();
+	//dbm->create_database("mysql");
+
 	Application *app = new MAIN_CLASS();
 
 	app->setup_routes();
@@ -46,8 +53,10 @@ int main(int argc, char **argv) {
 
 	delete server;
 	delete app;
+	delete dbm;
 	delete file_cache;
 	delete mp;
+	
 
 	return 0;
 }