Настройки базы данных теперь в xml

DataBaseLMS/databaselms.cpp

@@ -21,14 +21,16 @@ bool DataBaseLMS::createConnection()
 {
     mtxAccess.lock();
 
-    db = new QSqlDatabase(QSqlDatabase::addDatabase(dbType, connectionName));
-    db->setDatabaseName(dbName);
-    db->setUserName(dbUserName);
-    db->setPassword(dbPassword);
-    db->setPort(5432);
-    //db->setHostName("192.168.100.87");
-    //db->setHostName("192.168.100.248");
-    db->setHostName("192.168.100.239");
+    dbSettings = getDataBaseSettings();
+
+    dbSettings.connectionName = "Connection_" + dbSettings.dbName;
+
+    db = new QSqlDatabase(QSqlDatabase::addDatabase(dbSettings.dbType, dbSettings.connectionName));
+    db->setDatabaseName(dbSettings.dbName);
+    db->setUserName(dbSettings.dbUserName);
+    db->setPassword(dbSettings.dbPassword);
+    db->setHostName(dbSettings.dbHostName);
+    db->setPort(dbSettings.dbPort);
 
     bool res = db->open();
 
@@ -91,6 +93,63 @@ bool DataBaseLMS::isConnected()
     return false;
 }
 
+DataBaseSettings DataBaseLMS::getDataBaseSettings()
+{
+    DataBaseSettings settings;
+    QFile file("config/settings.xml");
+    if(!file.open(QIODevice::ReadOnly))
+    {
+        QMessageBox::critical(nullptr, "Attention!", "The file could not be opened: config/settings.xml");
+        return settings;
+    }
+    QXmlStreamReader xmlReader(&file);
+
+    while (!xmlReader.atEnd()){
+
+        if(xmlReader.isStartElement()){
+
+            if(xmlReader.name() == "DataBaseSettings")
+            {
+
+                foreach(const QXmlStreamAttribute &attr, xmlReader.attributes()){
+                    QString name = attr.name().toString();
+                    QString value = attr.value().toString();
+
+                    if(name == "Type"){
+                        settings.dbType = value;
+                    }
+
+                    if(name == "Name"){
+                        settings.dbName = value;
+                    }
+
+                    if(name == "UserName"){
+                        settings.dbUserName = value;
+                    }
+
+                    if(name == "Password"){
+                        settings.dbPassword = value;
+                    }
+
+                    if(name == "HostName"){
+                        settings.dbHostName = value;
+                    }
+
+                    if(name == "Port"){
+                        settings.dbPort = value.toInt();
+                    }
+
+                }
+            }
+        }
+
+        xmlReader.readNext();
+    }
+
+    file.close();
+    return settings;
+}
+
 bool DataBaseLMS::transactionBegin()
 {
     /*
@@ -1138,7 +1197,7 @@ bool DataBaseLMS::queryExec(QString queryStr, QSqlQuery *query)
 
 void DataBaseLMS::messageWarningErrorQuery(QString queryStr, QSqlQuery* query)
 {
-    QMessageBox::warning(nullptr, dbName,
+    QMessageBox::warning(nullptr, dbSettings.dbName,
                          "Error query:\n" + query->lastError().text() + "\n" +
                          "String of query:\n" + queryStr + "\n" +
                          "Executed query:\n" + query->executedQuery());

DataBaseLMS/databaselms.h

@@ -9,6 +9,18 @@
 #include "group.h"
 #include "tasksAmmFim.h"
 
+class DataBaseSettings
+{
+public:
+    QString dbName = "DataBaseLMS";
+    QString dbType = "QPSQL";
+    QString connectionName = "Connection";
+    QString dbUserName = "postgres";
+    QString dbPassword = "12345678";
+    QString dbHostName = "";
+    int dbPort = 5432;
+};
+
 class DataBaseLMS
 {
 public:
@@ -83,6 +95,7 @@ protected:
     int updateTrainee(Trainee trainee);
 
 private:
+    DataBaseSettings getDataBaseSettings();
     int queryExecInt(QString queryStr);
     QString queryExecString(QString queryStr);
     bool queryExecBool(QString queryStr);
@@ -91,14 +104,10 @@ private:
 
 protected:
     QSqlDatabase* db;
-    const QString dbName = "DataBaseLMS";
-    const QString connectionName = "Connection_DataBaseLMS";
-private:
-    bool transactionBegined;    
-    const QString dbUserName = "postgres";
-    const QString dbPassword = "12345678";
-    const QString dbType = "QPSQL";
+    DataBaseSettings dbSettings;
 
+private:
+    bool transactionBegined;
     QMutex mtxAccess;
 };
 

DataBaseLMS/interfacedatabaselms.cpp

@@ -20,7 +20,7 @@ bool InterfaceDataBaseLMS::ConnectionToDB()
 {
     if(!createConnection())
     {
-        QMessageBox::critical(nullptr, dbName, tr("Connection error: ") + db->lastError().text());
+        QMessageBox::critical(nullptr, dbSettings.dbName, tr("Connection error: ") + db->lastError().text());
         return false;
     }
     else