Fix Bugs and add error checking

programm.cpp

@@ -41,8 +41,8 @@ Programm::Programm(const QJsonObject &o):NamedObject(o,&syncServiceClassName),ID
 }
 
 void Programm::addDeviceProgramm(const QJsonObject &o){
-    programms.push_back(new DeviceProgramm(IDBase<Device>::getIDBaseObjectByID(o["device"].toString().toLong()),
-                        IDBase<ProgrammPrototype>::getIDBaseObjectByID(o["programmPrototype"].toString().toLong()),
+    programms.push_back(new DeviceProgramm(IDBase<Device>::getIDBaseObjectByID(o["device"]),
+                        IDBase<ProgrammPrototype>::getIDBaseObjectByID(o["programmPrototype"]),
             o["offset"].toDouble()));
     emit deviceProgrammAdded(programms.back());
     connect(programms.back(),&DeviceProgramm::destroyed,this,&Programm::deviceProgrammDeleted);

programm.h

@@ -36,7 +36,13 @@ public:
       */
     Q_SLOT void setSpeed(double s){if(s==speed)return;speed=s;emit speedChanged(speed);}
     double getSpeed()const{return speed;}
-    DeviceProgramm(Device * device,ProgrammPrototype * programmPrototype,double offset):QObject(device),programmPrototype(programmPrototype),offset(offset),device(device){connect(programmPrototype,&ProgrammPrototype::destroyed,this,&DeviceProgramm::programmPrototypeDeleted);}
+    DeviceProgramm(Device * device,ProgrammPrototype * programmPrototype,double offset):QObject(device),programmPrototype(programmPrototype),offset(offset),device(device){
+        if(!device)
+            throw new std::runtime_error("Nullpointer Exception: device is nullptr");
+        if(!programmPrototype)
+            throw new std::runtime_error("Nullpointer Exception: programmPrototype is nullptr");
+        connect(programmPrototype,&ProgrammPrototype::destroyed,this,&DeviceProgramm::programmPrototypeDeleted);
+    }
     bool setProgrammPrototype(ProgrammPrototype * p){
         if(p->devicePrototype!=device->prototype){
             return false;