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#include "cmdline.h"
#include "printdata.h"
#include <mysql++.h>
#include <iostream>
#include <cstdio>
using namespace std;
// Pull in the sample database name from the cmdline module.
extern const char* kpcSampleDatabase;
// Convert a packed version number in the format used within MySQL++
// to a printable string.
static string
version_str(int packed)
{
char buf[9];
snprintf(buf, sizeof(buf), "%d.%d.%d",
(packed & 0xFF0000) >> 16,
(packed & 0x00FF00) >> 8,
(packed & 0x0000FF));
return buf;
}
int
main(int argc, char *argv[])
{
// Ensure that we're not mixing library and header file versions.
// This is really easy to do if you have MySQL++ on your system and
// are trying to build a new version, and run the examples directly
// instead of through exrun.
if (mysqlpp::get_library_version() != MYSQLPP_HEADER_VERSION) {
cerr << "Version mismatch: library is v" <<
version_str(mysqlpp::get_library_version()) <<
", headers are v" <<
version_str(MYSQLPP_HEADER_VERSION) <<
". Are you running this" << endl <<
"with exrun? See README.examples." << endl;
return 1;
}
// Get connection parameters from command line
mysqlpp::examples::CommandLine cmdline(argc, argv);
if (!cmdline) {
return 1;
}
// Connect to database server
mysqlpp::Connection con;
try {
if (cmdline.dtest_mode()) {
cout << "Connecting to database server..." << endl;
}
else {
cout << "Connecting to '" <<
(cmdline.user() || "USERNAME") << "'@'" <<
(cmdline.server() || "localhost") << "', with" <<
(cmdline.pass() && cmdline.pass()[0] ? "" : "out") <<
" password..." << endl;
}
con.connect(0, cmdline.server(), cmdline.user(), cmdline.pass());
}
catch (exception& er) {
cerr << "Connection failed: " << er.what() << endl;
return 1;
}
// Create new sample database, or re-create it. We suppress
// exceptions, because it's not an error if DB doesn't yet exist.
bool new_db = false;
{
mysqlpp::NoExceptions ne(con);
mysqlpp::Query query = con.query();
if (con.select_db(mysqlpp::examples::db_name)) {
// Toss old tables, ignoring errors because it would just
// mean the table doesn't exist, which doesn't matter.
cout << "Dropping existing sample data tables..." << endl;
query.exec("drop table stock");
query.exec("drop table images");
query.exec("drop table deadlock_test1");
query.exec("drop table deadlock_test2");
}
else {
// Database doesn't exist yet, so create and select it.
if (con.create_db(mysqlpp::examples::db_name) &&
con.select_db(mysqlpp::examples::db_name)) {
new_db = true;
}
else {
cerr << "Error creating DB: " << con.error() << endl;
return 1;
}
}
}
// Create sample data table within sample database.
try {
// Send the query to create the stock table and execute it.
cout << "Creating stock table..." << endl;
mysqlpp::Query query = con.query();
query <<
"CREATE TABLE stock (" <<
" item CHAR(30) NOT NULL, " <<
" num BIGINT NOT NULL, " <<
" weight DOUBLE NOT NULL, " <<
" price DECIMAL(6,2) NULL, " << // NaN & inf. == NULL
" sdate DATE NOT NULL, " <<
" description MEDIUMTEXT NULL) " <<
"ENGINE = InnoDB " <<
"CHARACTER SET utf8 COLLATE utf8_general_ci";
query.execute();
// Set up the template query to insert the data. The parse()
// call tells the query object that this is a template and
// not a literal query string.
query << "insert into %6:table values " <<
"(%0q, %1q, %2, %3, %4q, %5q:desc)";
query.parse();
// Set a default for template query parameters "table" and "desc".
query.template_defaults["table"] = "stock";
query.template_defaults["desc"] = mysqlpp::null;
// Notice that we don't give a sixth parameter in these calls,
// so the default value of "stock" is used. Also notice that
// the first row is a UTF-8 encoded Unicode string! All you
// have to do to store Unicode data in recent versions of MySQL
// is use UTF-8 encoding.
cout << "Populating stock table..." << flush;
query.execute("Nürnberger Brats", 97, 1.5, 8.79, "2005-03-10");
query.execute("Pickle Relish", 87, 1.5, 1.75, "1998-09-04");
query.execute("Hot Mustard", 73, .95, .97, "1998-05-25",
"good American yellow mustard, not that European stuff");
query.execute("Hotdog Buns", 65, 1.1, 1.1, "1998-04-23");
// Test that above did what we wanted.
cout << "inserted " << con.count_rows("stock") << " rows." << endl;
// Now create empty images table, for testing BLOB and auto-
// increment column features.
cout << "Creating empty images table..." << endl;
query.reset(); // forget template query info
query <<
"CREATE TABLE images (" <<
" id INT UNSIGNED AUTO_INCREMENT, " <<
" data BLOB, " <<
" PRIMARY KEY (id)" <<
")";
query.execute();
// Create the tables used by examples/deadlock.cpp
cout << "Creating deadlock testing tables..." << endl;
query.execute("CREATE TABLE deadlock_test1 (x INT) ENGINE=innodb");
query.execute("CREATE TABLE deadlock_test2 (x INT) ENGINE=innodb");
query.execute("INSERT INTO deadlock_test1 VALUES (1);");
query.execute("INSERT INTO deadlock_test2 VALUES (2);");
// Report success
cout << (new_db ? "Created" : "Reinitialized") <<
" sample database successfully." << endl;
}
catch (const mysqlpp::BadQuery& er) {
// Handle any query errors
cerr << endl << "Query error: " << er.what() << endl;
return 1;
}
catch (const mysqlpp::BadConversion& er) {
// Handle bad conversions
cerr << endl << "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 << endl << "Error: " << er.what() << endl;
return 1;
}
return 0;
}
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