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/***********************************************************************
tquery1.cpp - Example similar to ssqls3.cpp, except that it uses
template queries instead of SSQLS.
Copyright (c) 1998 by Kevin Atkinson, (c) 1999-2001 by MySQL AB, and
(c) 2004-2009 by Educational Technology Resources, Inc. Others may
also hold copyrights on code in this file. See the CREDITS.txt file
in the top directory of the distribution for details.
This file is part of MySQL++.
MySQL++ is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
MySQL++ is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public
License along with MySQL++; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA
***********************************************************************/
#include "cmdline.h"
#include "printdata.h"
#include <iostream>
using namespace std;
int
main(int argc, char *argv[])
{
// Get database access parameters from command line
mysqlpp::examples::CommandLine cmdline(argc, argv);
if (!cmdline) {
return 1;
}
try {
// Establish the connection to the database server.
mysqlpp::Connection con(mysqlpp::examples::db_name,
cmdline.server(), cmdline.user(), cmdline.pass());
// Build a template query to retrieve a stock item given by
// item name.
mysqlpp::Query query = con.query(
"select * from stock where item = %0q");
query.parse();
// Retrieve an item added by resetdb; it won't be there if
// tquery* or ssqls3 is run since resetdb.
mysqlpp::StoreQueryResult res1 = query.store("Nürnberger Brats");
if (res1.empty()) {
throw mysqlpp::BadQuery("UTF-8 bratwurst item not found in "
"table, run resetdb");
}
// Replace the proper German name with a 7-bit ASCII
// approximation using a different template query.
query.reset(); // forget previous template query data
query << "update stock set item = %0q where item = %1q";
query.parse();
mysqlpp::SimpleResult res2 = query.execute("Nuerenberger Bratwurst",
res1[0][0].c_str());
// Print the new table contents.
print_stock_table(query);
}
catch (const mysqlpp::BadQuery& er) {
// Handle any query errors
cerr << "Query error: " << er.what() << endl;
return -1;
}
catch (const mysqlpp::BadConversion& er) {
// Handle bad conversions
cerr << "Conversion error: " << er.what() << endl <<
"\tretrieved data size: " << er.retrieved <<
", actual size: " << er.actual_size << endl;
return -1;
}
catch (const mysqlpp::Exception& er) {
// Catch-all for any other MySQL++ exceptions
cerr << "Error: " << er.what() << endl;
return -1;
}
return 0;
}
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