writing the vector map to a file in Omnetpp - c++

Question

I am having problem in writing the vector map to a file. I would like to know the detail value inside the wsmdata. I know that inorder to access the detail information I need to use operator overloading like “std::ostream& operator<<(std::ostream& os, map& );” in header file as well as in .cc file. But I don’t know how to use it in detail to access the vector data or output the vector data in the file. I have bee stuck in this problem for a long time. Can anybody help ?
Here is the portion of codes:
.h file:
using std::map;
typedef std::vector<WaveShortMessage*> WaveShortMessages;
std::map<long,WaveShortMessages> receivedWarningMap;
.cc file:
// add warning message to received messages storage
receivedWarningMap[wsm->getTreeId()].push_back(wsm->dup());
std::cout<<"Wsm dup() values/ receivedWarningMap="<<wsm->dup()<<endl;
std::ofstream tracefile;
tracefile.clear();
tracefile.open("traceFile1.txt", std::ios_base::app);
for (UINT i = 0; i < receivedWarningMap[wsm->getTreeId()].size(); i++)
{
std::cout << receivedWarningMap[wsm->getTreeId()][i] << std::endl;
EV<< "MyID="<<getMyID()<< "Recepient ID"<<wsm->getRecipientAddress()<<"Neighbor ID="<< wsm->getSenderAddress()<< std::endl;
}
tracefile.close();

Answer 1

First of all define operator << for your class WaveShortMessage, for example this way:
std::ostream & operator<<(std::ostream &os, WaveShortMessage * wsm) {
os << "Recepient ID=" << wsm->getRecipientAddress() << "; ";
os << "Neighbor ID=" << wsm->getSenderAddress() << "; ";
// and any other fields of this class
//...
return os;
}
Then use the following code to write map to text file:
// remember to add this two includes at the beginning:
// #include <fstream>
// #include <sstream>
std::ofstream logFile;
logFile.open("log.txt"); // if exists it will be overwritten
std::stringstream ss;
for (auto it = receivedWarningMap.begin(); it != receivedWarningMap.end(); ++it) {
ss << "id=" << static_cast<int>(it->first) << "; wsms=";
for (auto it2 : it->second) {
ss << it2 << "; ";
}
ss << endl;
}
logFile << ss.str();
logFile.close();