Attribute vector emptying itself
- by ravloony
Hello,
I have two classes, derived from a common class.
The common class has a pure virtual function called execute(), which is implemented in both derived classes.
In the inherited class I have an attribute which is a vector. In both execute() methods I overwrite this vector with a result. I access both classes from a vector of pointers to their objects.
The problem is when I try to access the result vector form outside the objects. In one case I can get the elements (which are simply pointers), in the other I cannot, the vector is empty.
Code:
class E;
class A{
protected:
vector<E*> _result;
public:
virtual void execute()=0;
vector<E*> get_result();
};
vector<E*> A::get_result()
{
return _result;
}
class B : public A
{
public:
virtual void execute();
};
B::execute()
{
//...
_result = tempVec;
return;
}
class C : public A
{
public:
virtual void execute();
};
C::execute()
{
//different stuff to B
_result = tempvec;
return;
}
main()
{
B* b = new B();
C* c = new C();
b->execute();
c->execute();
b->get_result();//returns full vector
c->get_result(); //returns empty vector!!
}
I have no idea what is going on here... I have tried filling _result by hand from a temp vector in the offending class, doing the same with vector::assign(), nothing works. And the other object works perfectly. I must be missing something....
Any help would be greatly appreciated.
