c++ - Connect HTTP thread handlers to SessionPools. -

we using model set in poco-project library documentation. thread/handler spawned every connection http server. want connect each thread shared sessionpoolcontainer(spc). working on assumption should instantiate spc in handlerfactory , give handler reference spc.

    class handler: public poco::net::httprequesthandler{     public:       handler(sessionpoolcontainer &spc){         //here goes wrong. "spc private."         sessionpool sp = spc.getpool("p1");         //todo fetch session once have sessionpool reference.         }        void handlerequest(poco::net::httpserverrequest& request, poco::net::httpserverresponse& response){         //do stuff.         }      };      class handlerfactory : public poco::net::httprequesthandlerfactory{     public:       sessionpoolcontainer spc;        poco::net::httprequesthandler* createrequesthandler(const poco::net::httpserverrequest &request){         poco::data::mysql::connector::registerconnector();         autoptr<sessionpool> p1 = new sessionpool("mysql", "host=127.0.0.1;port=3306;db=testdb2;user=bachelor;password=bachelor;compress=true;auto-reconnect=true");     spc.add(p1);          if (request.getcontenttype().compare("application/json")) {           return new handler(spc);           }         }       };      class mywebhttpserverapplication : public poco::util::serverapplication{     protected:        int main(const std::vector<std::string> &args){         // instanciate handlerfactory         poco::net::httpserver server(new handlerfactory(), socket, pparams);         server.start();         //sic       }     }; 

the error (from 3rd line): /home/notandi/git/poco-1.7.2-all/cmake_install/debug/include/poco/data/sessionpool.h:187:9: error: 'poco::data::sessionpool::sessionpool(const poco::data::sessionpool&)' private sessionpool(const sessionpool&); ^ /home/notandi/qt/mysqlwithpool/main.cpp:68:41: error: within context sessionpool sp = spc.getpool("p");

from i'm sitting needs work , have reference passed around.

i have tried "friend class handler;" in handler no change in status. relevant part of sessionpoolcontainer looks like:

    private:       typedef std::map<std::string, autoptr<sessionpool>, poco::ciless> sessionpoolmap;       sessionpoolcontainer(const sessionpoolcontainer&);       sessionpoolcontainer& operator = (const sessionpoolcontainer&);       sessionpoolmap  _sessionpools;       poco::fastmutex _mutex; 

do edit , recompile poco sessionpoolcontainer "friend class handler;"? how around or thinking wrong?

from posted code, looks pool container not needed @ because p1 pool never added pool container; so, if compile, spc contain no session pools; using sessionpoolcontainer makes sense if connecting multiple databases, in case have add session pool pool container:

spc.add(p1);

however, if there no need sessionpoolcontainer, pass reference sessionpool handler , session it:

class handler: public poco::net::httprequesthandler{   public:     handler(sessionpool &sp){       session s = sp.get();      }     //... }; 

look @ this code better understanding how use session pools , containers thereof.