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#include "cmdline.h"
#include "printdata.h"
#include "stock.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 query to retrieve the stock item that has Unicode
// characters encoded in UTF-8 form.
mysqlpp::Query query = con.query("select * from stock ");
query << "where item = " << mysqlpp::quote << "Nürnberger Brats";
// Retrieve the row, throwing an exception if it fails.
mysqlpp::StoreQueryResult res = query.store();
if (res.empty()) {
throw mysqlpp::BadQuery("UTF-8 bratwurst item not found in "
"table, run resetdb");
}
// Because there should only be one row in the result set,
// there's no point in storing the result in an STL container.
// We can store the first row directly into a stock structure
// because one of an SSQLS's constructors takes a Row object.
stock row = res[0];
// Create a copy so that the replace query knows what the
// original values are.
stock orig_row = row;
// Change the stock object's item to use only 7-bit ASCII, and
// to deliberately be wider than normal column widths printed
// by print_stock_table().
row.item = "Nuerenberger Bratwurst";
// Form the query to replace the row in the stock table.
query.update(orig_row, row);
// Show the query about to be executed.
cout << "Query: " << query << endl;
// Run the query with execute(), since UPDATE doesn't return a
// result set.
query.execute();
// Retrieve and print out 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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