Cannot create instance of abstract class

JesusC

Hello everybody,

I have created a slice name "Location.ice" which includes the interface LocationListener:


interface LocationListener {
["nonmutating", "cpp:const"]
idempotent void locateReport(Position pos);

["nonmutating", "cpp:const"]
idempotent void locateSeqReport(PositionSeq pos);

["nonmutating", "cpp:const"]
idempotent void locateRangeReport(PositionSeq pos);

};

And I have created the following implementation in c++ for this interface:

class LocationListenerI : virtual public LocationListener {

private:


public:

LocationListenerI();

virtual void LocationListenerI::locateReport(const Position& p, const ::Ice::Current& c);
virtual void LocationListenerI::locateSeqReport(const PositionSeq& p, const ::Ice::Current& c);
virtual void LocationListenerI::locateRangeReport(const PositionSeq& p, const ::Ice::Current& c);

};
//

---

void LocationListenerI::locateReport(const Position& p, const ::Ice::Current& c)
{
int i = 0;
}
//

---

void LocationListenerI::locateSeqReport(const PositionSeq& p, const ::Ice::Current& c)
{
int i = 0;
}
//

---

void LocationListenerI::locateRangeReport(const PositionSeq& p, const ::Ice::Current& c)
{
int i = 0;
}
//

---

but when I try to instance the LocationListenerI class, the compiler retrieves the error: "cannot create instance of abstract class 'LocationListenerI'"

I have check all the file 'Location.h' but I don't find the incoherence with the implementation (LocationListenerI) of the class LocationListener.

please, any help?

dwayne

It appears that you are missing the const qualifiers required because of your use of "cpp:const" metadata.

virtual void LocationListenerI::locateReport(const Position& p, const ::Ice::Current& c) const;
virtual void LocationListenerI::locateSeqReport(const PositionSeq& p, const ::Ice::Current& c) const;
virtual void LocationListenerI::locateRangeReport(const PositionSeq& p, const ::Ice::Current& c) const;

JesusC

That was it!
thanks