Added databasefactory to create database connections

cli/databasefactory.cpp

@@ -0,0 +1,39 @@
+#include <QThread>
+#include "databasefactory.h"
+#include "logger.h"
+DatabaseFactory::DatabaseFactory(QString connectionString)
+{
+    this->connectionString = connectionString;
+}
+static QThreadStorage<QSqlDatabase> dbStore;
+
+//TODO: not threadsafe
+QSqlDatabase DatabaseFactory::createNew()
+{
+    static int counter = 0;
+    QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE", "QSS" + QString::number(counter++));
+    db.setDatabaseName(this->connectionString);
+    if(!db.open())
+    {
+        Logger::error() << "Failed to open the database: " << this->connectionString << endl;
+        throw QSSGeneralException("Failed to create open new connection");
+    }
+    return db;
+}
+
+QSqlDatabase DatabaseFactory::forCurrentThread()
+{
+    if(dbStore.hasLocalData())
+    {
+        return dbStore.localData();
+    }
+    QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE", "QSS" + QString::number((quint64)QThread::currentThread(), 16));
+    db.setDatabaseName(this->connectionString);
+    if(!db.open())
+    {
+        Logger::error() << "Failed to open the database: " << this->connectionString << endl;
+        throw QSSGeneralException("Failed to create open new connection");
+    }
+    dbStore.setLocalData(db);
+    return db;
+}

cli/databasefactory.h

@@ -0,0 +1,16 @@
+#ifndef DATABASEFACTORY_H
+#define DATABASEFACTORY_H
+#include <QSqlDatabase>
+#include <QThreadStorage>
+#include "utils.h"
+class DatabaseFactory
+{
+private:
+    QString connectionString;
+public:
+    DatabaseFactory(QString connectionString);
+    QSqlDatabase createNew();
+    QSqlDatabase forCurrentThread();
+};
+
+#endif // DATABASEFACTORY_H