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// file : boost/driver.cxx
// copyright : not copyrighted - public domain
#include <memory> // std::auto_ptr
#include <iostream>
#include <odb/database.hxx>
#include <odb/session.hxx>
#include <odb/transaction.hxx>
#include "database.hxx" // create_database
#include "employee.hxx"
#include "employee-odb.hxx"
using namespace std;
using namespace boost::gregorian;
using namespace odb::core;
int
main (int argc, char* argv[])
{
using boost::shared_ptr;
try
{
auto_ptr<database> db (create_database (argc, argv));
// Create a few persistent objects.
//
{
// Simple Tech Ltd.
//
{
shared_ptr<employer> er (new employer ("Simple Tech Ltd"));
shared_ptr<employee> john (
new employee ("John", "Doe", date (1975, Jan, 1), er));
shared_ptr<employee> jane (
new employee ("Jane", "Q", "Doe", date (1976, Feb, 2), er));
john->emails ().insert ("john_d@example.com");
john->emails ().insert ("john.doe@example.com");
jane->emails ().insert ("jane_d@example.com");
jane->emails ().insert ("jane.doe@example.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.
//
{
shared_ptr<employer> er (new employer ("Complex Systems Inc"));
shared_ptr<employee> john (
new employee ("John", "Z", "Smith", date (1977, Mar, 3), er));
shared_ptr<employee> jane (
new employee ("Jane", "Smith", date (1978, Apr, 4), er));
john->emails ().insert ("john_s@example.com");
john->emails ().insert ("john.smith@example.com");
jane->emails ().insert ("jane_s@example.com");
jane->emails ().insert ("jane.smith@example.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 ());
shared_ptr<employer> stl (db->load<employer> ("Simple Tech Ltd"));
employees& es (stl->employees ());
for (employees::iterator i (es.begin ()); i != es.end (); ++i)
{
lazy_weak_ptr<employee>& lwp (*i);
shared_ptr<employee> p (lwp.load ()); // Load and lock.
cout << p->first () << " ";
if (p->middle ())
cout << *p->middle () << " ";
cout << p->last () << endl;
cout << " born: " << p->born () << endl
<< " employer: " << p->employer ()->name () << endl;
for (emails::const_iterator j (p->emails ().begin ());
j != p->emails ().end (); ++j)
{
cout << " email: " << *j << endl;
}
cout << endl;
}
t.commit ();
}
typedef odb::query<employee> query;
typedef odb::result<employee> result;
// Search for Complex Systems Inc employees that were born before
// April 1978.
//
{
session s;
transaction t (db->begin ());
result r (db->query<employee> (
query::employer->name == "Complex Systems Inc" &&
query::born < date (1978, Apr, 1)));
for (result::iterator i (r.begin ()); i != r.end (); ++i)
cout << i->first () << " " << i->last () << " " << i->born () << endl;
cout << endl;
t.commit ();
}
// Search for all the employees that don't have a middle name.
//
{
session s;
transaction t (db->begin ());
result r (db->query<employee> (query::middle.is_null ()));
for (result::iterator i (r.begin ()); i != r.end (); ++i)
cout << i->first () << " " << i->last () << endl;
t.commit ();
}
}
catch (const odb::exception& e)
{
cerr << e.what () << endl;
return 1;
}
}
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