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// file : qt/driver.cxx
// copyright : not copyrighted - public domain
#include <iostream>
#include <QtCore/QCoreApplication>
#include <odb/database.hxx>
#include <odb/session.hxx>
#include <odb/transaction.hxx>
#include "database.hxx" // createDatabase
#include "employee.hxx"
#include "employee-odb.hxx"
using namespace std;
using namespace odb::core;
ostream&
operator<< (ostream& os, const QString& s)
{
return os << s.toStdString ();
}
int
main (int argc, char* argv[])
{
QCoreApplication app (argc, argv);
try
{
auto_ptr<database> db (createDatabase (argc, argv));
// Create a few persistent objects.
//
{
// Simple Tech Ltd.
//
{
QSharedPointer<Employer> er (new Employer ("Simple Tech Ltd"));
QSharedPointer<Employee> john (
new Employee ("John",
"Doe",
QDate (1975, 1, 1),
QByteArray ("\0xF1\0x00\0x34\0x45\0x00\0xDE", 6),
er));
QSharedPointer<Employee> jane (
new Employee ("Jane",
"Doe",
QDate (1976, 2, 2),
QByteArray ("\0xD7\0x00\0x14", 3),
er));
john->emails ().insert ("john_d@example.com");
john->emails ().insert ("john.doe@simple.com");
jane->emails ().insert ("jane_d@example.com");
jane->emails ().insert ("jane.doe@simple.com");
// Set the inverse side of the employee-employer relationship.
//
er->employees ().push_back (john);
er->employees ().push_back (jane);
transaction t (db->begin ());
db->persist (er);
db->persist (john);
db->persist (jane);
t.commit ();
}
// Complex Systems Inc.
//
{
QSharedPointer<Employer> er (new Employer ("Complex Systems Inc"));
QSharedPointer<Employee> john (
new Employee ("John",
"Smith",
QDate (1977, 3, 3),
QByteArray ("\0x23\0xFD\0x8F\0x00", 4),
er));
QSharedPointer<Employee> jane (
new Employee ("Jane",
"Smith",
QDate (1978, 4, 4),
QByteArray ("0x00\0x32\0x00\0x01\0x00", 5),
er));
john->emails ().insert ("john_s@example.com");
john->emails ().insert ("john.smith@complex.com");
jane->emails ().insert ("jane_s@example.com");
jane->emails ().insert ("jane.smith@complex.com");
// Set the inverse side of the employee-employer relationship.
//
er->employees ().push_back (john);
er->employees ().push_back (jane);
transaction t (db->begin ());
db->persist (er);
db->persist (john);
db->persist (jane);
t.commit ();
}
}
// Load Simple Tech Ltd and print its employees.
//
{
session s;
transaction t (db->begin ());
QSharedPointer<Employer> stl (db->load<Employer> ("Simple Tech Ltd"));
Employees& es (stl->employees ());
for (Employees::iterator i (es.begin ()); i != es.end (); ++i)
{
QLazyWeakPointer<Employee>& lwp (*i);
// Load and lock the employee and his employer.
//
QSharedPointer<Employee> p (lwp.load ());
QSharedPointer<Employer> pe (p->employer ().load ());
cout << p->first () << " " << p->last () << endl
<< " born: " << p->born ().toString () << endl;
for (Emails::const_iterator j (p->emails ().begin ()),
e (p->emails ().end ()); j != e; ++j)
{
cout << " email: " << *j << endl;
}
cout << " public key length: " << p->publicKey ().size () << endl
<< " employer: " << pe->name () << endl
<< " id: " << p->id ().toString () << endl
<< endl;
}
t.commit ();
}
// Search for Complex Systems Inc employees that were born before
// April 1978.
//
{
typedef odb::query<Employee> query;
typedef odb::result<Employee> result;
session s;
transaction t (db->begin ());
result r (db->query<Employee> (
query::employer->name == "Complex Systems Inc" &&
query::born < QDate (1978, 4, 1)));
for (result::iterator i (r.begin ()); i != r.end (); ++i)
cout << i->first () << " " << i->last ()
<< " " << i->born ().toString () << endl;
t.commit ();
}
}
catch (const odb::exception& e)
{
cerr << e.what () << endl;
return 1;
}
}
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