 | | | Weird query issue | Weird query issue 2007-12-03 - By Jim Wallace
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It's because Query has no default constructor. Since you have a Query
member object and not constructing it in the member initialization list,
it's trying to construct it using a default constructor. I'd only keep
the Connection as a member and use the rest as local.
> -- --Original Message-- --
> From: Michael Sullivan [mailto:michael@(protected)]
> Sent: Sunday, December 02, 2007 3:34 PM
> To: plusplus@(protected)
> Subject: Weird query issue
>
> Here's my code:
>
> michael@(protected) ourrpg $ nl gameengine.h
> 1 #ifndef GAMEENGINE_H
> 2 #define GAMEENGINE_H
> 3
> 4 #include <mysql++.h>
> 5
> 6 using namespace mysqlpp;
> 7 class GameEngine
> 8 {
> 9 public:
> 10 GameEngine();
> 11 ~GameEngine();
> 12
> 13 private:
> 14 Connection con;
> 15 Query query;
> 16 Result res;
> 17 Row row;
> 18
> 19
> 20 };
> 21 #endif
> michael@(protected) ourrpg $ nl gameengine.cpp
> 1 #include <mysql++.h>
> 2 #include "gameengine.h"
> 3 #include <iostream>
> 4
> 5 GameEngine::GameEngine()
> 6 {
> 7 con = Connection(false);
> 8 con.connect("RPG", "localhost", "rpguser", "ourrpg");
> 9 query = con.query();
> 10 }
> 11
> 12 GameEngine::~GameEngine()
> 13 {
> 14 }
> 15
>
> I'm getting these errors:
>
> gameengine.cpp: In constructor 'GameEngine::GameEngine()':
> gameengine.cpp:5: error: no matching function for call to
> 'mysqlpp::Query::Query()'
> /usr/local/include/mysql++/query.h:150: note: candidates are:
> mysqlpp::Query::Query(const mysqlpp::Query&)
> /usr/local/include/mysql++/query.h:141: note:
> mysqlpp::Query::Query(mysqlpp::Connection*, bool)
>
> I took that query = con.query() directly from simple1.cpp,
> (which built successfully), so why isn't it working here?
>
>
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>
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