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before interface 13.11.2024

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krivoshein
2024-11-13 09:54:35 +03:00
parent f4ca58ce91
commit 61aaac2b1c
62 changed files with 1233 additions and 1047 deletions
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485
DB_LMS/DataBaseLMS/databaselms.cpp
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@@ -5,7 +5,8 @@
#include <QMessageBox>
DataBaseLMS::DataBaseLMS():
db(nullptr)
db(nullptr),
transactionBegined(false)
{
createConnection();
}
@@ -35,14 +36,40 @@ bool DataBaseLMS::createConnection()
void DataBaseLMS::deleteConnection()
{
if(transactionBegined)
QSqlDatabase::database().rollback();
if(db != nullptr)
{
if(db->isOpen())
db->close();
delete db;
db = nullptr;
}
}
bool DataBaseLMS::transactionBegin()
{
if(transactionBegined)
QSqlDatabase::database().rollback();
transactionBegined = true;
return QSqlDatabase::database().transaction();
}
bool DataBaseLMS::transactionEnd()
{
if(transactionBegined)
{
transactionBegined = false;
return QSqlDatabase::database().commit();
}
return false;
}
QList<Instructor> DataBaseLMS::selectAllInstructors()
{
QList<Instructor> listInstructors;
@@ -51,10 +78,11 @@ QList<Instructor> DataBaseLMS::selectAllInstructors()
"FROM public.instructors "
"ORDER BY instructor_id ASC");
QSqlQuery query(*db);
QSqlQuery query = QSqlQuery(*db);
if(!query.exec(queryStr))
{
messageWarningErrorQuery(queryStr);
messageWarningErrorQuery(queryStr, &query);
}
else
{
@@ -89,10 +117,11 @@ QList<Trainee> DataBaseLMS::selectAllTrainees()
"LEFT OUTER JOIN public.classrooms ON classrooms.classroom_id = computers.classroom_computer "
"ORDER BY groups.name, trainees.name ASC");
QSqlQuery query(*db);
QSqlQuery query = QSqlQuery(*db);
if(!query.exec(queryStr))
{
messageWarningErrorQuery(queryStr);
messageWarningErrorQuery(queryStr, &query);
}
else
{
@@ -104,7 +133,7 @@ QList<Trainee> DataBaseLMS::selectAllTrainees()
trainee.setName(query.value(1).toString());
trainee.setLogin(query.value(2).toString());
trainee.setPassword(query.value(3).toString());
trainee.setArchived(query.value(4).toBool());
trainee.setArchived(query.value(4).toBool());
trainee.setLoggedIn(query.value(5).toBool());
Group group = Group(query.value(6).toInt(), query.value(7).toString());
@@ -131,10 +160,11 @@ QList<Group> DataBaseLMS::selectAllGroups()
"FROM public.groups "
"ORDER BY group_id ASC");
QSqlQuery query(*db);
QSqlQuery query = QSqlQuery(*db);
if(!query.exec(queryStr))
{
messageWarningErrorQuery(queryStr);
messageWarningErrorQuery(queryStr, &query);
}
else
{
@@ -151,10 +181,162 @@ QList<Group> DataBaseLMS::selectAllGroups()
return listGroups;
}
Instructor DataBaseLMS::selectInstructor(int id_instructor)
{
Instructor instructor;
QString queryStr = QString("SELECT instructor_id, name, login, password, is_admin, archived, logged_in "
"FROM public.instructors "
"WHERE instructors.instructor_id = %1 ").arg(
id_instructor);
QSqlQuery query = QSqlQuery(*db);
if(!query.exec(queryStr))
{
messageWarningErrorQuery(queryStr, &query);
}
else
{
if (query.first())
{//Инструктор
instructor.setID(query.value(0).toInt());
instructor.setName(query.value(1).toString());
instructor.setLogin(query.value(2).toString());
instructor.setPassword(query.value(3).toString());
instructor.setIsAdmin(query.value(4).toBool());
instructor.setArchived(query.value(5).toBool());
instructor.setLoggedIn(query.value(6).toBool());
}
}
return instructor;
}
int DataBaseLMS::selectInstructorID(QString login, QString password)
{
QString queryStr;
if(password != QStringLiteral(""))
{
queryStr = QString("SELECT instructors.instructor_id "
"FROM public.instructors "
"WHERE login = '%1' AND password = '%2' ").arg(
login,
password );
}
else
{
queryStr = QString("SELECT instructors.instructor_id "
"FROM public.instructors "
"WHERE login = '%1' ").arg(
login );
}
return queryExecInt(queryStr);
}
bool DataBaseLMS::selectInstructorIsAdmin(int id_instructor)
{
QString queryStr = QString("SELECT instructors.is_admin "
"FROM public.instructors "
"WHERE instructor_id = %1 ").arg(
id_instructor );
QSqlQuery query = QSqlQuery(*db);
if(!query.exec(queryStr))
{
messageWarningErrorQuery(queryStr, &query);
}
else
{
if(query.next())
return query.value(0).toBool();
}
return false;
}
bool DataBaseLMS::selectInstructorLoggedIn(int id_instructor)
{
QString queryStr = QString("SELECT instructors.logged_in "
"FROM public.instructors "
"WHERE instructor_id = %1 ").arg(
id_instructor );
QSqlQuery query = QSqlQuery(*db);
if(!query.exec(queryStr))
{
messageWarningErrorQuery(queryStr, &query);
}
else
{
if(query.next())
return query.value(0).toBool();
}
return false;
}
bool DataBaseLMS::selectInstructorArchived(int id_instructor)
{
QString queryStr = QString("SELECT instructors.archived "
"FROM public.instructors "
"WHERE instructor_id = %1 ").arg(
id_instructor );
QSqlQuery query = QSqlQuery(*db);
if(!query.exec(queryStr))
{
messageWarningErrorQuery(queryStr, &query);
}
else
{
if(query.next())
return query.value(0).toBool();
}
return false;
}
int DataBaseLMS::updateInstructorLoggedIn(int id_instructor, bool loggedIn)
{
QString queryStr = QString("UPDATE public.instructors "
"SET logged_in = %1 "
"WHERE instructor_id = %2 "
"RETURNING instructors.instructor_id").arg(
loggedIn ? "true" : "false",
QString::number(id_instructor) );
return queryExecInt(queryStr);
}
int DataBaseLMS::updateInstructorArchived(int id_instructor, bool archived)
{
QString queryStr = QString("UPDATE public.instructors "
"SET archived = %1 "
"WHERE instructor_id = %2 "
"RETURNING instructors.instructor_id").arg(
archived ? "true" : "false",
QString::number(id_instructor) );
return queryExecInt(queryStr);
}
int DataBaseLMS::insertInstructor()
{
QString queryStr = QString("INSERT INTO public.instructors "
"DEFAULT VALUES "
"RETURNING instructor_id");
return queryExecInt(queryStr);
}
int DataBaseLMS::insertInstructor(Instructor instructor)
{
QString queryStr = QString("INSERT INTO public.instructors (name, login, password, is_admin, archived, logged_in) "
"VALUES ('%1', '%2', '%3', %4, %5, %6) RETURNING instructor_id").arg(
"VALUES ('%1', '%2', '%3', %4, %5, %6) "
"RETURNING instructor_id").arg(
instructor.getName(),
instructor.getLogin(),
instructor.getPassword(),
@@ -162,21 +344,25 @@ int DataBaseLMS::insertInstructor(Instructor instructor)
instructor.getArchived() ? "true" : "false",
instructor.getLoggedIn() ? "true" : "false");
return queryExec(queryStr);
return queryExecInt(queryStr);
}
int DataBaseLMS::deleteInstructor(int instructor_id)
int DataBaseLMS::deleteInstructor(int id_instructor)
{
QString queryStr = QString("DELETE FROM public.instructors WHERE instructor_id = %1 RETURNING instructors.instructor_id").arg(QString::number(instructor_id));
QString queryStr = QString("DELETE FROM public.instructors "
"WHERE instructor_id = %1 "
"RETURNING instructors.instructor_id").arg(
QString::number(id_instructor));
return queryExec(queryStr);
return queryExecInt(queryStr);
}
int DataBaseLMS::updateInstructor(Instructor instructor)
{
QString queryStr = QString("UPDATE public.instructors "
"SET name = '%1', login = '%2', password = '%3', is_admin = %4, archived = %5, logged_in = %6 "
"WHERE instructor_id = %7 RETURNING instructors.instructor_id").arg(
"WHERE instructor_id = %7 "
"RETURNING instructors.instructor_id").arg(
instructor.getName(),
instructor.getLogin(),
instructor.getPassword(),
@@ -185,38 +371,226 @@ int DataBaseLMS::updateInstructor(Instructor instructor)
instructor.getLoggedIn() ? "true" : "false",
QString::number(instructor.getID()) );
return queryExec(queryStr);
return queryExecInt(queryStr);
}
Group DataBaseLMS::selectGroup(int id_group)
{
Group group;
QString queryStr = QString("SELECT group_id, name "
"FROM public.groups "
"WHERE groups.group_id = %1 ").arg(
id_group);
QSqlQuery query = QSqlQuery(*db);
if(!query.exec(queryStr))
{
messageWarningErrorQuery(queryStr, &query);
}
else
{
if (query.first())
{//Инструктор
group.setID(query.value(0).toInt());
group.setName(query.value(1).toString());
}
}
return group;
}
int DataBaseLMS::insertGroup()
{
QString queryStr = QString("INSERT INTO public.groups "
"DEFAULT VALUES "
"RETURNING group_id");
return queryExecInt(queryStr);
}
int DataBaseLMS::insertGroup(Group group)
{
QString queryStr = QString("INSERT INTO public.groups (name) "
"VALUES ('%1') RETURNING groups.group_id").arg(
"VALUES ('%1') "
"RETURNING groups.group_id").arg(
group.getName());
return queryExec(queryStr);
return queryExecInt(queryStr);
}
int DataBaseLMS::deleteGroup(int group_id)
{
QString queryStr = QString("DELETE FROM public.groups WHERE group_id = %1 RETURNING groups.group_id").arg(QString::number(group_id));
QString queryStr = QString("DELETE FROM public.groups "
"WHERE group_id = %1 "
"RETURNING groups.group_id").arg(
QString::number(group_id));
return queryExec(queryStr);
return queryExecInt(queryStr);
}
int DataBaseLMS::updateGroup(Group group)
{
QString queryStr = QString("UPDATE public.groups SET name = '%1' WHERE group_id = %2 RETURNING groups.group_id").arg(
QString queryStr = QString("UPDATE public.groups SET name = '%1' "
"WHERE group_id = %2 "
"RETURNING groups.group_id").arg(
group.getName(),
QString::number(group.getID()) );
return queryExec(queryStr);
return queryExecInt(queryStr);
}
Trainee DataBaseLMS::selectTrainee(int id_trainee)
{
Trainee trainee;
QString queryStr = QString("SELECT trainees.trainee_id, trainees.name, trainees.login, trainees.password, trainees.archived, trainees.logged_in, "
"groups.group_id, groups.name, "
"computers.computer_id, computers.name, computers.ip_address, "
"classrooms.classroom_id, classrooms.name "
"FROM public.trainees JOIN public.groups ON groups.group_id = trainees.group_trainee "
"LEFT OUTER JOIN public.computers ON computers.computer_id = trainees.computer_trainee "
"LEFT OUTER JOIN public.classrooms ON classrooms.classroom_id = computers.classroom_computer "
"WHERE trainees.trainee_id = %1 "
"ORDER BY groups.name, trainees.name ASC").arg(
id_trainee);
QSqlQuery query = QSqlQuery(*db);
if(!query.exec(queryStr))
{
messageWarningErrorQuery(queryStr, &query);
}
else
{
if (query.first())
{//Инструктор
trainee.setID(query.value(0).toInt());
trainee.setName(query.value(1).toString());
trainee.setLogin(query.value(2).toString());
trainee.setPassword(query.value(3).toString());
trainee.setArchived(query.value(4).toBool());
trainee.setLoggedIn(query.value(5).toBool());
Group group = Group(query.value(6).toInt(), query.value(7).toString());
trainee.setGroup(group);
Classroom classroom = Classroom(query.value(11).toInt(), query.value(12).toString());
Computer computer = Computer(query.value(8).toInt(), query.value(9).toString(), query.value(10).toString(), classroom);
trainee.setComputer(computer);
trainee.setTasks(selectTasksOfTrainee(trainee.getID()));
}
}
return trainee;
}
int DataBaseLMS::selectTraineeID(QString login, QString password)
{
QString queryStr;
if(password != QStringLiteral(""))
{
queryStr = QString("SELECT trainees.trainee_id "
"FROM public.trainees "
"WHERE login = '%1' AND password = '%2' ").arg(
login,
password );
}
else
{
queryStr = QString("SELECT trainees.trainee_id "
"FROM public.trainees "
"WHERE login = '%1' ").arg(
login );
}
return queryExecInt(queryStr);
}
bool DataBaseLMS::selectTraineeArchived(int id_trainee)
{
QString queryStr = QString("SELECT trainees.archived "
"FROM public.trainees "
"WHERE trainee_id = %1 ").arg(
id_trainee );
QSqlQuery query = QSqlQuery(*db);
if(!query.exec(queryStr))
{
messageWarningErrorQuery(queryStr, &query);
}
else
{
if(query.next())
return query.value(0).toBool();
}
return false;
}
bool DataBaseLMS::selectTraineeLoggedIn(int id_trainee)
{
QString queryStr = QString("SELECT trainees.logged_in "
"FROM public.trainees "
"WHERE trainee_id = %1 ").arg(
id_trainee );
QSqlQuery query = QSqlQuery(*db);
if(!query.exec(queryStr))
{
messageWarningErrorQuery(queryStr, &query);
}
else
{
if(query.next())
return query.value(0).toBool();
}
return false;
}
int DataBaseLMS::updateTraineeLoggedIn(int id_trainee, bool loggedIn)
{
QString queryStr = QString("UPDATE public.trainees "
"SET logged_in = %1 "
"WHERE trainee_id = %2 "
"RETURNING trainees.trainee_id").arg(
loggedIn ? "true" : "false",
QString::number(id_trainee) );
return queryExecInt(queryStr);
}
int DataBaseLMS::updateTraineeArchived(int id_trainee, bool archived)
{
QString queryStr = QString("UPDATE public.trainees "
"SET archived = %1 "
"WHERE trainee_id = %2 "
"RETURNING trainees.trainee_id").arg(
archived ? "true" : "false",
QString::number(id_trainee) );
return queryExecInt(queryStr);
}
int DataBaseLMS::insertTrainee(int id_group)
{
QString queryStr = QString("INSERT INTO public.trainees (name, login, password, archived, logged_in, group_trainee) "
"VALUES (DEFAULT, DEFAULT, DEFAULT, DEFAULT, DEFAULT, %1) "
"RETURNING trainees.trainee_id").arg(
QString::number(id_group));
return queryExecInt(queryStr);
}
int DataBaseLMS::insertTrainee(Trainee trainee)
{
QString queryStr = QString("INSERT INTO public.trainees (name, login, password, archived, logged_in, group_trainee) "
"VALUES ('%1', '%2', '%3', %4, %5, %6) RETURNING trainees.trainee_id").arg(
"VALUES ('%1', '%2', '%3', %4, %5, %6) "
"RETURNING trainees.trainee_id").arg(
trainee.getName(),
trainee.getLogin(),
trainee.getPassword(),
@@ -224,14 +598,17 @@ int DataBaseLMS::insertTrainee(Trainee trainee)
trainee.getLoggedIn() ? "true" : "false",
QString::number(trainee.getGroup().getID()));
return queryExec(queryStr);
return queryExecInt(queryStr);
}
int DataBaseLMS::deleteTrainee(int trainee_id)
{
QString queryStr = QString("DELETE FROM public.trainees WHERE trainee_id = %1 RETURNING trainees.trainee_id").arg(QString::number(trainee_id));
QString queryStr = QString("DELETE FROM public.trainees "
"WHERE trainee_id = %1 "
"RETURNING trainees.trainee_id").arg(
QString::number(trainee_id));
return queryExec(queryStr);
return queryExecInt(queryStr);
}
int DataBaseLMS::updateTrainee(Trainee trainee)
@@ -242,7 +619,8 @@ int DataBaseLMS::updateTrainee(Trainee trainee)
"SET name = '%1', login = '%2', password = '%3', archived = %4, logged_in = %5, "
"group_trainee = %6, "
"computer_trainee = %7 "
"WHERE trainee_id = %8 RETURNING trainees.trainee_id").arg(
"WHERE trainee_id = %8 "
"RETURNING trainees.trainee_id").arg(
trainee.getName(),
trainee.getLogin(),
trainee.getPassword(),
@@ -252,7 +630,7 @@ int DataBaseLMS::updateTrainee(Trainee trainee)
computer_id,
QString::number(trainee.getID()) );
return queryExec(queryStr);
return queryExecInt(queryStr);
}
QList<Task> DataBaseLMS::selectTasksOfTrainee(int trainee_id)
@@ -260,17 +638,18 @@ QList<Task> DataBaseLMS::selectTasksOfTrainee(int trainee_id)
QList<Task> tasks;
QString queryStr = QString("SELECT tasks.task_id, tasks.name "
"FROM public.trainees "
"JOIN public.trainees_tasks ON trainees_tasks.trainee_id = trainees.trainee_id "
"JOIN public.tasks ON tasks.task_id = trainees_tasks.task_id "
"WHERE trainees.trainee_id = %1 "
"ORDER BY tasks.name ASC").arg(
trainee_id);
"FROM public.trainees "
"JOIN public.trainees_tasks ON trainees_tasks.trainee_id = trainees.trainee_id "
"JOIN public.tasks ON tasks.task_id = trainees_tasks.task_id "
"WHERE trainees.trainee_id = %1 "
"ORDER BY tasks.name ASC").arg(
trainee_id);
QSqlQuery query = QSqlQuery(*db);
QSqlQuery query(*db);
if(!query.exec(queryStr))
{
messageWarningErrorQuery(queryStr);
messageWarningErrorQuery(queryStr, &query);
}
else
{
@@ -286,24 +665,46 @@ QList<Task> DataBaseLMS::selectTasksOfTrainee(int trainee_id)
return tasks;
}
int DataBaseLMS::queryExec(QString queryStr)
int DataBaseLMS::queryExecInt(QString queryStr)
{
QSqlQuery query(*db);
QSqlQuery query = QSqlQuery(*db);
if(!query.exec(queryStr))
{
messageWarningErrorQuery(queryStr);
messageWarningErrorQuery(queryStr, &query);
return 0;
}
else
{
if(query.next())
if(query.first())
return query.value(0).toInt();
else
return 0;
}
}
void DataBaseLMS::messageWarningErrorQuery(QString queryStr)
/*
bool DataBaseLMS::queryExecBool(QString queryStr)
{
QMessageBox::warning(nullptr, dbName, "Error query: " + queryStr + "\n" + db->lastError().text());
QSqlQuery query = QSqlQuery(*db);
if(!query.exec(queryStr))
{
messageWarningErrorQuery(queryStr, &query);
return 0;
}
else
{
if(query.first())
return query.value(0).toBool();
else
return 0;
}
}*/
void DataBaseLMS::messageWarningErrorQuery(QString queryStr, QSqlQuery* query)
{
QMessageBox::warning(nullptr, dbName,
"Error query:\n" + query->lastError().text() + "\n" +
"String of query:\n" + queryStr + "\n" +
"Executed query:\n" + query->executedQuery());
}