Модуль DataBaseLMS рефакторинг

DataBaseLMS/databaselms.h

@@ -15,13 +15,13 @@
 class DataBaseSettings
 {
 public:
-    QString dbName = "DataBaseLMS";
+    QString dbName = "";
-    QString dbType = "QPSQL";
+    QString dbType = "";
-    QString connectionName = "Connection";
+    QString connectionName = "";
-    QString dbUserName = "postgres";
+    QString dbUserName = "";
-    QString dbPassword = "12345678";
+    QString dbPassword = "";
     QString dbHostName = "";
-    int dbPort = 5432;
+    int dbPort = 0;
 };
 
 class DataBaseLMS : public QObject

DataBaseLMS/interfacedatabaselms.cpp

@@ -6,7 +6,6 @@
 #include "interfacedatabaselms.h"
 
 InterfaceDataBaseLMS::InterfaceDataBaseLMS(QWidget *ownerWidget, QObject *parent):
-    //QObject(parent),
     DataBaseLMS(ownerWidget, parent),
     ownerWidget(ownerWidget)
 {
@@ -15,7 +14,6 @@ InterfaceDataBaseLMS::InterfaceDataBaseLMS(QWidget *ownerWidget, QObject *parent
 
 bool InterfaceDataBaseLMS::connectionToDB()
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     if(!createConnection())
     {
         QMessageBox::critical(ownerWidget, dbSettings.dbName, tr("Connection error") /*+ db->lastError().text()*/);
@@ -30,7 +28,6 @@ bool InterfaceDataBaseLMS::connectionToDB()
 
 bool InterfaceDataBaseLMS::disConnectionFromDB()
 {    
-    //QMutexLocker mtxLocker(&mtxAccess);
     deleteConnection();
     //QMessageBox::information(ownerWidget, dbName, tr("Disconnection is successful!"));
     return true;
@@ -38,7 +35,6 @@ bool InterfaceDataBaseLMS::disConnectionFromDB()
 
 bool InterfaceDataBaseLMS::DBisConnected()
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return isConnected();
 }
 
@@ -47,8 +43,6 @@ bool InterfaceDataBaseLMS::DBisConnected()
 
 bool InterfaceDataBaseLMS::authorizationInstructor(QString login, QString password)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
-
     if(int id = selectUserID(DataBaseLMS::TypeUserDBInstructor, login, password))
     {
         if(selectUserArchived(DataBaseLMS::TypeUserDBInstructor, id) || selectUserLoggedIn(DataBaseLMS::TypeUserDBInstructor, id))
@@ -62,8 +56,6 @@ bool InterfaceDataBaseLMS::authorizationInstructor(QString login, QString passwo
 
 bool InterfaceDataBaseLMS::deAuthorizationInstructor(QString login)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
-
     if(int id = selectUserID(DataBaseLMS::TypeUserDBInstructor, login))
     {
         if(updateUserLoggedIn(DataBaseLMS::TypeUserDBInstructor, id, false))
@@ -74,67 +66,56 @@ bool InterfaceDataBaseLMS::deAuthorizationInstructor(QString login)
 
 bool InterfaceDataBaseLMS::deAuthorizationAllInstructors()
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return updateAllUsersLoggedIn(DataBaseLMS::TypeUserDBInstructor, false);
 }
 
 QString InterfaceDataBaseLMS::getNameInstructorByLogin(QString login)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return selectUserNameByLogin(DataBaseLMS::TypeUserDBInstructor, login);
 }
 
 int InterfaceDataBaseLMS::getIdInstructorByLogin(QString login)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return selectUserID(DataBaseLMS::TypeUserDBInstructor, login);
 }
 
 QList<Instructor> InterfaceDataBaseLMS::getListInstructors()
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return selectAllInstructors();
 }
 
 Instructor InterfaceDataBaseLMS::getInstructor(int id)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return selectInstructor(id);
 }
 
 int InterfaceDataBaseLMS::newInstructor()
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return insertInstructor();
 }
 
 int InterfaceDataBaseLMS::delInstructor(int id)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return deleteInstructor(id);
 }
 
 int InterfaceDataBaseLMS::editInstructor(Instructor instructor)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return updateInstructor(instructor);
 }
 
 bool InterfaceDataBaseLMS::isAdminInstructor(int id)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return selectInstructorIsAdmin(id);
 }
 
 bool InterfaceDataBaseLMS::isArchivedInstructor(int id)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return selectUserArchived(DataBaseLMS::TypeUserDBInstructor, id);
 }
 
 bool InterfaceDataBaseLMS::isLoggedInInstructor(int id)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return selectUserLoggedIn(DataBaseLMS::TypeUserDBInstructor, id);
 }
 
@@ -143,8 +124,6 @@ bool InterfaceDataBaseLMS::isLoggedInInstructor(int id)
 
 bool InterfaceDataBaseLMS::authorizationTrainee(QString login, QString password, QString classroom_name, QString computer_name)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
-
     if(int id = selectUserID(DataBaseLMS::TypeUserDBTrainee, login, password))
     {
         if(selectUserArchived(DataBaseLMS::TypeUserDBTrainee, id) || selectUserLoggedIn(DataBaseLMS::TypeUserDBTrainee, id))
@@ -158,8 +137,6 @@ bool InterfaceDataBaseLMS::authorizationTrainee(QString login, QString password,
 
 bool InterfaceDataBaseLMS::deAuthorizationTrainee(QString login)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
-
     if(int id = selectUserID(DataBaseLMS::TypeUserDBTrainee, login))
     {
         if(updateUserLoggedIn(DataBaseLMS::TypeUserDBTrainee, id, false))
@@ -170,14 +147,11 @@ bool InterfaceDataBaseLMS::deAuthorizationTrainee(QString login)
 
 bool InterfaceDataBaseLMS::deAuthorizationAllTrainees()
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return updateAllUsersLoggedIn(DataBaseLMS::TypeUserDBTrainee, false);
 }
 
 int InterfaceDataBaseLMS::entryTraineeOnSimulator(int id_trainee)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
-
     TimingOfTrainee timing(id_trainee);
 
     timing = selectTimingTrainee(id_trainee);
@@ -198,8 +172,6 @@ int InterfaceDataBaseLMS::entryTraineeOnSimulator(int id_trainee)
 
 int InterfaceDataBaseLMS::exitTraineeFromSimulator(int id_trainee)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
-
     TimingOfTrainee timing(id_trainee);
 
     timing = selectTimingTrainee(id_trainee);
@@ -220,180 +192,150 @@ int InterfaceDataBaseLMS::exitTraineeFromSimulator(int id_trainee)
 
 QString InterfaceDataBaseLMS::getNameTraineeOnComputer(QString computer_name)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return selectTraineeNameOnComputer(computer_name);
 }
 
 Trainee InterfaceDataBaseLMS::getTraineeOnComputer(QString computer_name)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return selectTraineeOnComputer(computer_name);
 }
 
 QString InterfaceDataBaseLMS::getNameTraineeByLogin(QString login)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return selectUserNameByLogin(DataBaseLMS::TypeUserDBTrainee, login);
 }
 
 int InterfaceDataBaseLMS::getIdTraineeByLogin(QString login)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return selectUserID(DataBaseLMS::TypeUserDBTrainee, login);
 }
 
 QList<Trainee> InterfaceDataBaseLMS::getListTraineesInGroup(int id)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return selectAllTraineesInGroup(id);
 }
 
 QList<Group> InterfaceDataBaseLMS::getListGroups()
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return selectAllGroups();
 }
 
 QList<Trainee> InterfaceDataBaseLMS::getListTrainees()
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return selectAllTrainees();
 }
 
 Trainee InterfaceDataBaseLMS::getTrainee(int id)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return selectTrainee(id);
 }
 
 Group InterfaceDataBaseLMS::getGroup(int id)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return selectGroup(id);
 }
 
 int InterfaceDataBaseLMS::newGroup()
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return insertGroup();
 }
 
 int InterfaceDataBaseLMS::delGroup(int id)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return deleteGroup(id);
 }
 
 int InterfaceDataBaseLMS::editGroup(Group group)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return updateGroup(group);
 }
 
 int InterfaceDataBaseLMS::newTaskAMM(TaskAmmFim task, int id_trainee)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return insertTaskAMM(task, id_trainee);
 }
 
 int InterfaceDataBaseLMS::delTaskAMM(int id)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return deleteTaskAMM(id);
 }
 
 int InterfaceDataBaseLMS::editTaskAMM(TaskAmmFim task)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return updateTaskAMM(task);
 }
 
 QList<TaskAmmFim> InterfaceDataBaseLMS::getListTasksAMMofTrainee(int id_trainee)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return selectTasksAMMofTrainee(id_trainee);
 }
 
 QList<TaskAmmFim> InterfaceDataBaseLMS::getListTasksFIMofTrainee(int id_trainee)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return selectTasksFIMofTrainee(id_trainee);
 }
 
 TaskAmmFim InterfaceDataBaseLMS::getTaskAMMbyID(int id_task)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return selectTaskAMMbyID(id_task);
 }
 
 TaskAmmFim InterfaceDataBaseLMS::getTaskFIMbyID(int id_task)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return selectTaskFIMbyID(id_task);
 }
 
 int InterfaceDataBaseLMS::newTaskFIM(TaskAmmFim task, int id_trainee)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return insertTaskFIM(task, id_trainee);
 }
 
 int InterfaceDataBaseLMS::delTaskFIM(int id)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return deleteTaskFIM(id);
 }
 
 int InterfaceDataBaseLMS::editTaskFIM(TaskAmmFim task)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return updateTaskFIM(task);
 }
 
 int InterfaceDataBaseLMS::replaceReportFIM(TaskAmmFim task)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return updateReportFIMforTask(task);
 }
 
 int InterfaceDataBaseLMS::changeStatusTaskFIM(int id_task, QString status)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return updateStatusTaskFIM(id_task, status);
 }
 
 int InterfaceDataBaseLMS::changeStatusTaskAMM(int id_task, QString status)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return updateStatusTaskAMM(id_task, status);
 }
 
 int InterfaceDataBaseLMS::newTrainee(int id_group)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return insertTrainee(id_group);
 }
 
 int InterfaceDataBaseLMS::delTrainee(int id)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return deleteTrainee(id);
 }
 
 int InterfaceDataBaseLMS::editTrainee(Trainee trainee)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return updateTrainee(trainee);
 }
 
 bool InterfaceDataBaseLMS::isArchivedTrainee(int id)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return selectUserArchived(DataBaseLMS::TypeUserDBTrainee, id);
 }
 
 bool InterfaceDataBaseLMS::isLoggedInTrainee(int id)
 {
-    //QMutexLocker mtxLocker(&mtxAccess);
     return selectUserLoggedIn(DataBaseLMS::TypeUserDBTrainee, id);
 }

DataBaseLMS/interfacedatabaselms.h

@@ -8,10 +8,8 @@
 #include "DataBaseLMS_global.h"
 #include "databaselms.h"
 
-class DATABASELMS_EXPORT InterfaceDataBaseLMS : public /*QObject,*/  DataBaseLMS
+class DATABASELMS_EXPORT InterfaceDataBaseLMS : public DataBaseLMS
 {
-    //Q_OBJECT
-
 public:
     InterfaceDataBaseLMS(QWidget *ownerWidget, QObject *parent = nullptr);
 
@@ -49,10 +47,6 @@ public:
     bool deAuthorizationTrainee(QString login);
     bool deAuthorizationAllTrainees();    
 
-    //Регистрация тайминга Обучаемого
-    int entryTraineeOnSimulator(int id_trainee);
-    int exitTraineeFromSimulator(int id_trainee);
-
     QString getNameTraineeOnComputer(QString computer_name);
     Trainee getTraineeOnComputer(QString computer_name);
 
@@ -71,6 +65,10 @@ public:
     bool isArchivedTrainee(int id);
     bool isLoggedInTrainee(int id);
 
+    //Регистрация тайминга Обучаемого
+    int entryTraineeOnSimulator(int id_trainee);
+    int exitTraineeFromSimulator(int id_trainee);
+
 
     //Группы
 
@@ -101,7 +99,6 @@ public:
 
 private:    
     QWidget* ownerWidget;
-    //QMutex mtxAccess;
 };
 
 #endif // INTERFACEDATABASELMS_H

ServerLMS/providerdblms.cpp

@@ -9,7 +9,6 @@ ProviderDBLMS::ProviderDBLMS(QWidget *parentWidget, QObject *parent) :
     parentWidget(parentWidget)
 {
     dbLMS = new InterfaceDataBaseLMS(parentWidget);
-    //ConnectionToDB();
 }
 
 ProviderDBLMS::~ProviderDBLMS()
@@ -25,7 +24,6 @@ void ProviderDBLMS::ConnectionToDB()
        if(dbLMS->connectionToDB())
        {
            Q_EMIT signal_BlockAutorization(false);
-           //Q_EMIT signal_NeedUpdateUI(true, true);
        }
    }
    mtxAccess.unlock();
@@ -39,8 +37,6 @@ void ProviderDBLMS::DisConnectionFromDB()
         Q_EMIT signal_BlockAutorization(true);
 
         dbLMS->disConnectionFromDB();
-
-        //Q_EMIT signal_NeedUpdateUI(true, true);
     }
     mtxAccess.unlock();
 }
@@ -54,11 +50,7 @@ QString ProviderDBLMS::getMainInstructorName()
         mtxAccess.unlock();
         return QStringLiteral("");
     }
-
-    //QString res = dbLMS->getNameInstructorByLogin(loginInstructorLoggedInLocal);
-
     mtxAccess.unlock();
-    //return res;
     return QStringLiteral("");
 }
 
@@ -78,9 +70,6 @@ bool ProviderDBLMS::authorizationTrainee(QString login, QString password, QStrin
 
     Q_EMIT signal_BlockAutorization(false);
 
-    //if(res)
-        //Q_EMIT signal_NeedUpdateUI(false, true);
-
      mtxAccess.unlock();
      return res;
 }
@@ -101,9 +90,6 @@ bool ProviderDBLMS::deAuthorizationTrainee(QString login)
 
     Q_EMIT signal_BlockAutorization(false);
 
-    //if(res)
-        //Q_EMIT signal_NeedUpdateUI(false, true);
-
     mtxAccess.unlock();
     return res;
 }
@@ -140,9 +126,6 @@ bool ProviderDBLMS::authorizationInstructor(QString login, QString password)
 
     Q_EMIT signal_BlockAutorization(false);
 
-    //if(res)
-        //Q_EMIT signal_NeedUpdateUI(true, false);
-
     mtxAccess.unlock();
     return res;
 }
@@ -163,26 +146,6 @@ bool ProviderDBLMS::deAuthorizationInstructor(QString login)
 
     Q_EMIT signal_BlockAutorization(false);
 
-    /*
-    if(res)
-    {
-        if(loginInstructorLoggedInLocal == login)
-        {
-            loginInstructorLoggedInLocal = QStringLiteral("");
-            adminMode = false;
-
-            viewerInstructors->setAdminMode(adminMode);
-            viewerTrainees->setAdminMode(adminMode);
-            viewerInstructors->setAuthComplited(false);
-            viewerTrainees->setAuthComplited(false);
-
-            Q_EMIT signal_NeedUpdateUI(true, false);
-        }
-        else
-            Q_EMIT signal_NeedUpdateUI(true, false);
-
-    }*/
-
     mtxAccess.unlock();
     return res;
 }
@@ -227,6 +190,13 @@ bool ProviderDBLMS::deAuthorizationAll()
 bool ProviderDBLMS::entryTraineeOnSimulator(int id_trainee)
 {
     mtxAccess.lock();
+
+    if(! dbLMS->DBisConnected())
+    {
+        mtxAccess.unlock();
+        return false;
+    }
+
     if(dbLMS->entryTraineeOnSimulator(id_trainee))
     {
         mtxAccess.unlock();
@@ -242,6 +212,13 @@ bool ProviderDBLMS::entryTraineeOnSimulator(int id_trainee)
 bool ProviderDBLMS::exitTraineeFromSimulator(int id_trainee)
 {
     mtxAccess.lock();
+
+    if(! dbLMS->DBisConnected())
+    {
+        mtxAccess.unlock();
+        return false;
+    }
+
     if(dbLMS->exitTraineeFromSimulator(id_trainee))
     {
         mtxAccess.unlock();
@@ -257,7 +234,7 @@ bool ProviderDBLMS::exitTraineeFromSimulator(int id_trainee)
 int ProviderDBLMS::getIdTraineeByLogin(QString login)
 {
     int id_trainee = 0;
-    qDebug() << "ProviderDBLMS " << QThread::currentThreadId();
+
     mtxAccess.lock();
 
     if(! dbLMS->DBisConnected())
@@ -275,7 +252,7 @@ int ProviderDBLMS::getIdTraineeByLogin(QString login)
 int ProviderDBLMS::getIdInstructorByLogin(QString login)
 {
     int id_instructor = 0;
-    qDebug() << "ProviderDBLMS " << QThread::currentThreadId();
+
     mtxAccess.lock();
 
     if(! dbLMS->DBisConnected())
@@ -293,7 +270,7 @@ int ProviderDBLMS::getIdInstructorByLogin(QString login)
 QString ProviderDBLMS::getLoginTraineeById(int id_trainee)
 {
     QString login = "";
-    qDebug() << "ProviderDBLMS " << QThread::currentThreadId();
+
     mtxAccess.lock();
 
     if(! dbLMS->DBisConnected())
@@ -311,7 +288,7 @@ QString ProviderDBLMS::getLoginTraineeById(int id_trainee)
 QList<Instructor> ProviderDBLMS::GetListAllInstructors()
 {
     QList<Instructor> listInstructors;
-    qDebug() << "ProviderDBLMS " << QThread::currentThreadId();
+
     mtxAccess.lock();
 
     if(! dbLMS->DBisConnected())
@@ -366,6 +343,11 @@ int ProviderDBLMS::newInstructor()
 {
     int res = 0;
     mtxAccess.lock();
+    if(! dbLMS->DBisConnected())
+    {
+        mtxAccess.unlock();
+        return res;
+    }
     res = dbLMS->newInstructor();
     mtxAccess.unlock();
     return res;
@@ -375,6 +357,11 @@ int ProviderDBLMS::delInstructor(int id)
 {
     int res = 0;
     mtxAccess.lock();
+    if(! dbLMS->DBisConnected())
+    {
+        mtxAccess.unlock();
+        return res;
+    }
     res = dbLMS->delInstructor(id);
     mtxAccess.unlock();
     return res;
@@ -384,6 +371,11 @@ int ProviderDBLMS::editInstructor(Instructor instructor)
 {
     int res = 0;
     mtxAccess.lock();
+    if(! dbLMS->DBisConnected())
+    {
+        mtxAccess.unlock();
+        return res;
+    }
     res = dbLMS->editInstructor(instructor);
     mtxAccess.unlock();
     return res;
@@ -393,6 +385,11 @@ int ProviderDBLMS::newTrainee(int id_group)
 {
     int res = 0;
     mtxAccess.lock();
+    if(! dbLMS->DBisConnected())
+    {
+        mtxAccess.unlock();
+        return res;
+    }
     res = dbLMS->newTrainee(id_group);
     mtxAccess.unlock();
     return res;
@@ -402,6 +399,11 @@ int ProviderDBLMS::delTrainee(int id)
 {
     int res = 0;
     mtxAccess.lock();
+    if(! dbLMS->DBisConnected())
+    {
+        mtxAccess.unlock();
+        return res;
+    }
     res = dbLMS->delTrainee(id);
     mtxAccess.unlock();
     return res;
@@ -411,6 +413,11 @@ int ProviderDBLMS::editTrainee(Trainee trainee)
 {
     int res = 0;
     mtxAccess.lock();
+    if(! dbLMS->DBisConnected())
+    {
+        mtxAccess.unlock();
+        return res;
+    }
     res = dbLMS->editTrainee(trainee);
     mtxAccess.unlock();
     return res;
@@ -420,6 +427,11 @@ int ProviderDBLMS::newGroup()
 {
     int res = 0;
     mtxAccess.lock();
+    if(! dbLMS->DBisConnected())
+    {
+        mtxAccess.unlock();
+        return res;
+    }
     res = dbLMS->newGroup();
     mtxAccess.unlock();
     return res;
@@ -429,6 +441,11 @@ int ProviderDBLMS::delGroup(int id)
 {
     int res = 0;
     mtxAccess.lock();
+    if(! dbLMS->DBisConnected())
+    {
+        mtxAccess.unlock();
+        return res;
+    }
     res = dbLMS->delGroup(id);
     mtxAccess.unlock();
     return res;
@@ -438,6 +455,11 @@ int ProviderDBLMS::editGroup(Group group)
 {
     int res = 0;
     mtxAccess.lock();
+    if(! dbLMS->DBisConnected())
+    {
+        mtxAccess.unlock();
+        return res;
+    }
     res = dbLMS->editGroup(group);
     mtxAccess.unlock();
     return res;
@@ -447,6 +469,11 @@ int ProviderDBLMS::newTaskAMM(TaskAmmFim task, int id_trainee)
 {
     int res = 0;
     mtxAccess.lock();
+    if(! dbLMS->DBisConnected())
+    {
+        mtxAccess.unlock();
+        return res;
+    }
     res = dbLMS->newTaskAMM(task, id_trainee);
     mtxAccess.unlock();
     return res;
@@ -456,6 +483,11 @@ int ProviderDBLMS::delTaskAMM(int id)
 {
     int res = 0;
     mtxAccess.lock();
+    if(! dbLMS->DBisConnected())
+    {
+        mtxAccess.unlock();
+        return res;
+    }
     res = dbLMS->delTaskAMM(id);
     mtxAccess.unlock();
     return res;
@@ -465,6 +497,11 @@ int ProviderDBLMS::editTaskAMM(TaskAmmFim task)
 {
     int res = 0;
     mtxAccess.lock();
+    if(! dbLMS->DBisConnected())
+    {
+        mtxAccess.unlock();
+        return res;
+    }
     res = dbLMS->editTaskAMM(task);
     mtxAccess.unlock();
     return res;
@@ -474,6 +511,11 @@ int ProviderDBLMS::newTaskFIM(TaskAmmFim task, int id_trainee)
 {
     int res = 0;
     mtxAccess.lock();
+    if(! dbLMS->DBisConnected())
+    {
+        mtxAccess.unlock();
+        return res;
+    }
     res = dbLMS->newTaskFIM(task, id_trainee);
     mtxAccess.unlock();
     return res;
@@ -483,6 +525,11 @@ int ProviderDBLMS::delTaskFIM(int id)
 {
     int res = 0;
     mtxAccess.lock();
+    if(! dbLMS->DBisConnected())
+    {
+        mtxAccess.unlock();
+        return res;
+    }
     res = dbLMS->delTaskFIM(id);
     mtxAccess.unlock();
     return res;
@@ -492,6 +539,11 @@ int ProviderDBLMS::editTaskFIM(TaskAmmFim task)
 {
     int res = 0;
     mtxAccess.lock();
+    if(! dbLMS->DBisConnected())
+    {
+        mtxAccess.unlock();
+        return res;
+    }
     res = dbLMS->editTaskFIM(task);
     mtxAccess.unlock();
     return res;
@@ -501,6 +553,11 @@ int ProviderDBLMS::replaceReportFIM(TaskAmmFim task)
 {
     int res = 0;
     mtxAccess.lock();
+    if(! dbLMS->DBisConnected())
+    {
+        mtxAccess.unlock();
+        return res;
+    }
     res = dbLMS->replaceReportFIM(task);
     mtxAccess.unlock();
     return res;
@@ -510,6 +567,11 @@ int ProviderDBLMS::changeStatusTaskFIM(int id_task, QString status)
 {
     int res = 0;
     mtxAccess.lock();
+    if(! dbLMS->DBisConnected())
+    {
+        mtxAccess.unlock();
+        return res;
+    }
     res = dbLMS->changeStatusTaskFIM(id_task, status);
     mtxAccess.unlock();
     return res;
@@ -519,6 +581,11 @@ int ProviderDBLMS::changeStatusTaskAMM(int id_task, QString status)
 {
     int res = 0;
     mtxAccess.lock();
+    if(! dbLMS->DBisConnected())
+    {
+        mtxAccess.unlock();
+        return res;
+    }
     res = dbLMS->changeStatusTaskAMM(id_task, status);
     mtxAccess.unlock();
     return res;