Bad Character from const char

[rottmanj]

I have written a class that manages all the database connection information/methods I need to connect to a database and query off of it. In order to make my application dynamic so that it can read from multiple tables I setup 4 variables that I will populate at another time. These variables hold the data for database I want to connect to.

Currently when I run the code, I end up with this as the output.

test
�y�������
DB connection failed: Bad character '�' in TCP/IP address
 

The data the bad characters is holding is the name of the database(test). The correct output is the first line from above is set/output on lines 14 and 16.

Any help with this is greatly appreciated.

Here is my code so far

DbConnect.h

#ifndef DBCONNECT_H_
#define DBCONNECT_H_
#include <string>
#include <mysql++.h>
 
class DbConnect
{
public:
    std::string keep_value;                // private data value
 
    const char* datasource;
    const char* hostname;
    const char* username;
    const char* password;
 
    void db_set(std::string db_value);    // public method to set value
    std::string db_get(void);            // public method to get value
    mysqlpp::StoreQueryResult db_query(std::string sqlQuery); // query connection
 
};
 
#endif /*DBCONNECT_H_*/
 

test2.cpp

#include "test2.h"
#include "DbConnect.h"
#include <mysql++.h>
#include <string>
#include <iomanip>
 
 
// Main application method
 
int DataParse::mainParse(void){
 
    DbConnect qryAction, sqlQuery, db;
 
    db.datasource = "test";
 
    std::cout << db.datasource << std::endl;
 
 
 
    sqlQuery.db_set("SELECT * from test");
    mysqlpp::StoreQueryResult qryResult = qryAction.db_query(sqlQuery.db_get());
 
    mysqlpp::StoreQueryResult::const_iterator it;
    for (it = qryResult.begin(); it != qryResult.end(); ++it) {
        mysqlpp::Row row = *it;
        std::cout << '\t' << row[0] << std::endl;
        std::cout << '\t' << row[1] << std::endl;
    }
 
}
 

DbConnect.cpp

#include "DbConnect.h"
#include <mysql++.h>
#include <string>
#include <iomanip>
#include <iostream>
 
 
// Setter for db connection variables
void DbConnect::db_set(std::string db_value){
    keep_value = db_value;
}
 
// Getter for db connection variables
std::string DbConnect::db_get(void){
    return (keep_value);
}
 
 
// Query server for data, returns query object
mysqlpp::StoreQueryResult DbConnect::db_query(std::string sqlQuery){
 
    // connect to database server
    mysqlpp::Connection conn(false);
 
    std::cout << DbConnect::datasource << std::endl;
 
    if (conn.connect(datasource, hostname, username, password)) {
        // Retrieve a subset of the sample stock table set up by resetdb
        // and display it.
        mysqlpp::Query query = conn.query(sqlQuery);
        if (mysqlpp::StoreQueryResult result = query.store()) {
            mysqlpp::StoreQueryResult::const_iterator it;
            return result;
        }
        else {
            std::cerr << "Failed to get item list: " << query.error() << std::endl;
        }
    }
    else {
        std::cerr << "DB connection failed: " << conn.error() << std::endl;
    }    
}
 

[Banfa]

You are not setting hostname (or username or password for that matter) anywhere in this code.